Register Now


Lost Password

Lost your password? Please enter your email address. You will receive a link and will create a new password via email.

Captcha Click on image to update the captcha .


Register Now

register content

Siemens S7 PLC Error Codes and Causes/Solutions

Siemens S7 Error Codes, error number, error description and error cause.

Error number:Text:Cause:Remedy:
34:178Block call invalid because interface was changed in the meantime.With Step7 V5.0 the instance DB of the DB type is entered in the symbol list for an FB call. This is no longer permitted with Step7 V5.0. In this case the “Update Call” function doesn’t work.Enter the instance DB of the FB type in the symbol list.
34:4321Error in column 1, distribute the program in little


34:4355F Ze %2!06d! Sp %3!03d!: No PLC type description found for called or addressed block


The block called is not available.The block is to be compiled before the call.
In the case of SFB/SFC calls, please copy into your offline database with the

SIMATIC Manager (block container).

If the SFB/SFC is not available on the CPU addressed, then it should not be


34:4461The block %4 that was called/used is protected or created by S7-GRAPH and cannot be generated.You are trying to generate a KNOW_HOW_PROTECT block into an STL source.The block named is protected and cannot be generated into an STL source.
34:4469The declaration range of your formal parameter does not match the declaration range of the actual parameter, for example, no OUTPUT paramater from the actual end can be assigned to an INPUT parameter from the formal end.It is not allowed, that an OUT variable of the calling function block is parameterized with the IN variable of the function block called.We recommend first saving the data temporarily on a static variable. In a further network this static variable is parameterized with the IN variable of the FB called. The output variable of the higher-level block, the static variable and the input variable of the lower-level block must be of the same data type.
34:4485The parameter assignments can be specified in any order in the ASCII source. The comments, however, are stored separately from the actual online block in the order entered. Thus, when exchanging parameters in the source, the order of comments might then be wrong. When the block is opened, the comments are then assigned incorrectly. In the worst case comments might even be lost. The following comments in the network are also affected, even when the exchanged parameters are not even commented.If you have entered comments for parameters, then when assigning the parameters, please keep to the order in which the parameters of the block called are declared.
Message appears when opening a VAT. The directory S7USS is missing

in the SIEMENS\STEP7 directory.

Reinstall STEP 7.
88:47Unable to reach the module %1 by means of the online interface that is set.Programming device is connected to the MPI interface of the CPU.Check whether the CPU is routing-compatible. If Not, then please set your MPI driver to PROFIBUS and connect up with the PROFIBUS DP. Then repeat the desired function.



Error number:Text:Cause:Remedy:
256:24Function open Environment is not implemetiertMultiple start of the SIMATIC ManagerIn the STEP7_V2/S7met directory delete the files S7CacheA.dat and S7ser.dat with Win95 Explorer. The ending .dat can be left out; depending on the options package, there is also an S7CacheB -E.dat
256:26Internal OLE Error.Not enough space on the hard disk, the database cannot be started.Create space on the hard disk and set user-defined virtual memory.
Wrong DLL in Windows/System and/or wrong Registry entry.Start program editor via Explorer and evaluate error message.
If the following message appears: “The file S7HRVERX.DLL is linked with the missing export S7OTBLDX.DLL: s7_set_password.”, then check whether the file ‘S7OTBLDX.DLL’ is in the Windows system directory. When implementing STEP 7 V4.02, you must delete this file from the Windows system directory.
If the following message appears: “The file S7KAFAPX is linked with the missing export OT5050R.DLL:4224”, check whether the OT5050R 2x is on the computer. Rename all except those that are in the S7BIN directory.
With V3.1 when printingWith V3.1 copy block comment into network comment.
WIN 95: the OLE was not installed properly when installing WINDOWS.Delete Windows directory and then reinstall WINDOWS.
Message appears when opening a VAT.

The S7USS directory is missing in the directory SIEMENS\STEP7.

Reinstall STEP 7.
256:30SCL: Programming of S7 moduls. The object was


Error occurs when you export an SCL source, delete it in the SIMATIC

Manager and then import it again and compile it.

Delete the block contained in the source in the SIMATIC Manager first and

only then compile.

256:31This object was not found.An object that fulfills the criteria specified is not available. The function triggered cannot be executed. The assignments in the OFFLINE database with regard to the HW configuration are no longer consistent.You can reorganize the addresses with key combination


256:32Not valid objects.A link has obviously been lost.In V2.1 projects the solution is to use “Save As with Reorganization”
256:35Internal system error is not repairable.
256:49The quoted entry is not in the registry by Windows or contains a not valid value.Error occurred when downloading SDBs into a remote CPU via TeleService. The cause here was a bad telephone line connection (analog) (in the USA). After several attempts to set up an ONLINE connection, the SDBs could be transferred without this error message. An attempt was also made to achieve a higher transmission rate with the ONLINE connection.Set up the connection over and over again and wait for a better line quality. Try to get a higher transmission rate (<- indicator for better line quality at the time of connection set up).



Error number:Text:Cause:Remedy:
256:53Internal error: Not valid pointer.In PLCSIM an attempt was made to load the last simulation in PLCSIM via the menu item Simulation -> Last Simulation. Since the old project data (e.g. also block interfaces) has perhaps changed in the meantime, some of the data of the simulation originally created no longer matches the current project.Create a new simulation via Simulation -> New PLC. The next time you run the last simulation the latest new simulation will be loaded without error message.
256:56There is an internal error in the system.Project might be damaged.Terminate application and restart.
If the error re-occurs, restart Windows.
STEP 7 V5.x: There is an internal error in the


Send project in to the Technical SIMATIC Customer Support.
256:57There is an not repairable error in the system during the programming. The function can not be might possibly exist when dearchiving.Copy/move
256:62Not repairable internal system error in refer to the

file “symlist.dbf”.

Project might be damaged.Computer might have crashed.Save as … with consistency check or recreate the project.
256:63Please see the remedies by errror number 258:15.
256:68The object … cannot be edited because it is currently opened by another application or another user.This message appears when you start the “File > Save as…” function together with the “With reorganization (slowly)” option if there are still applications open (e.g. Symbol Table) in the project which is being reorganized.Before reorganizing, close all the applications in the project.
256:85SIMATIC Manager expects formatted names.Enter correct name with VAT<digit>.
256:89The version 513 of the objekt XR00001 is not

compatible in refer to the installed software.

Legacy from V2 in XUTIL catalogDelete the XUTIL directory in the project path
256:92The data can only be read.This might be data, for example, from a project or library. The cause might be that there are no write rights for the directory or drive in which the data are located.Make sure that you have the appropriate rights to access the drive or directory where the data is located.


Using a virus scanner in Runtime mode can lead to faults. Do the virus scanning offline (i.e. at times when you are not working on your STEP 7 project) or disable the virus scanner on your computer.

The data is being processed by a different application or by a different


Save the modifications made in a different application and make sure that

no other user processes this data at the time in question.



Error number:Text:Cause:Remedy:
The data are read-only.You have copied a data backup of a project from a CD onto your hard disk and now cannot open this project. The reason for this is that all the files of the project have the attribute “write-protected” set. There are various ways of removing the write-protection from files. One such is described below.1.  Mark the project in the explorer, where is saved in the folder and click on the right mouse botton (example: D:\…\Siemens\Step7\S7Proj\<Project>).

2.  Open in the context menu the “Properties” and select “Security”.

3.  Here you can allow the “Read” and other functions by “Permissions for Administrators”.

4.  Click after on “Apply” and “OK”.

256:93The rights of write is missing in the directory.The directory in which the S7P file is located is write-protected.Remove the write-protection from all directories that have to do with the


Not enough space on the disk < 100 bytes
If STEP 7 V4.x is concerned, then it might be that a file has not been deleted, which still specifies that the project is still on a write-protected drive.Delete S7APROMX.TXT in the root directory of the project.
256:94Problems with the offline folder.This message may be due to the fact that the project has been dearchived on a computer and edited with an options package whose version is no longer compatible with the current STEP 7 version.First of all check the versions of all the options packages installed on your computer which are required for editing the project. You may need to install one or other update (service pack) or upgrade (new version).

You can find information about compatibility with SIMATIC software packages for your STEP 7 version in Entry ID 18734363.

Then make a copy of your project with “File > Save as…” and the option “With reorganization (slow)”.

256:100Authorization of STEP 7 is not found.No Basic Authorization installed. Error occurs when attempting to start an installed options package. Probably STEP 7 is only authorized as Mini.Install Basic Authorization
256:104Authorization of optional package is not found.No user rights (authorization) found for the options software on drive C:.Install the options authorization from the authorization floppy disk included in the delivery package. If you have lost the authorization (e.g. through a fault on the hard disk), you can install the emergency authorization to be able continue working for a limited period of time. You must then procure a replacement for the lost authorization during this limited time.
WIN NT: insufficient access rights.To operate S7 software under NT you need at least main user rights.
256:107The object specified could not be copied. There might not be enough space left on the data medium. Possibly the target directory is momentarily blocked by another application.Press the “Yes” button to continue the copy or save operation for the remaining objects. The copied objects might possibly be incomplete or defective in the new environment. If you press the “No” button, the copy or save operation is aborted.



Error number:Text:Cause:Remedy:
Possibly another STEP 7 application has opened the object to be copied and has thus blocked it. In this case, close all other STEP 7 applications and trigger the process again.
256:111Access deniedYour have repeatedly loaded a program in the SPS and now it is not

possible to load the program again, also not after a new start.

Start the service “Server” in the control panel.
256:119There is no authorization for STEP 7. To operate this optional package, you require the authorization for “STEP 7 V4.x”.No authorization installed or the path in which the STEP 7 project is located is too long.Install the authorization or shorten the project path as appropriate.
257:5One or more objects of a type cannot be represented. Unable to load the server ‘s7uvpomx.dll’ for _S7UV_LIST_CT-objects. Make sure that the required optional packages are installed.The process variable server cannot be started. Installation problem with STEP 7. There must not be any incompatible version of WinCC installed on the computer.Please check the version of the software package installed against the compatibility list. This is located in your STEP 7 directory as the file S7KOMP_x.PDF.                                        x stands for the language: a=German b=English, c=French, d=Spanish, e=Italian.
Mixed installation, a V4.0 or V4.01 was installed before the installation

STEP 7 V5.x.

Deinstall STEP 7 manually and then reinstall it.

See FAQ 189025

Paths in Autoexec.bat are not set.Edit Autoexec.bat so that the paths are set or not overwritten, as the case

may be.

One or more objects of a type cannot be represented.

Unable to load the server ‘s7hkdmax.dll’ for



Make sure that the required optional packages are installed.

A file required by STEP 7 has not been found. Probably the project contains objects for which you need an options package that is not installed to process them.Reinstall the DVA_S7 package.
One or more objects of a type cannot be represented.

Unable to load the server ‘p7spumax.dll’ for


Make sure that the required optional packages are installed.

There is no authorization permitting you to integrate SIMATIC PDM in STEP 7. This authorization is an options authorization which has to be installed in addition to the basic authorization of SIMATIC PDM.You must install the options authorization for integrating SIMATIC PDM in STEP 7.



Error number:Text:Cause:Remedy:
One or more objects of a type cannot be represented.

Unable to load the server ‘s7jthomx.dll’ for


Make sure that the required optional packages are installed.

The S7 project to be opened contains an object that has been created with the options package Technological Hierarchies. This package is not installed or has not been recognized properly after an over-installation of STEP 7.Reinstall the options package Technological Hierarchies.
One or more objects of a type cannot be represented.

Unable to load the server ‘s7hk31ax.dll’ for


Make sure that the required optional packages are installed.

Toolbox of SINUMERIK 840D is missing or is badly installed.Reinstall the toolbox for SINUMERIK 840 D.
The S7 project is opened with STEP 7 V5.x and the SINUMERIK 840D

toolbox is installed with version under V5.

The SINUMERIK 840 D V4.x toolbox is incompatible with STEP 7 V5.

Please install the toolbox for SINUMERIK 840 D V5.

One or more objects of a type cannot be represented.

Unable to load the server S7HK31AX.DLL for

_S7H_6ES7_315_1AF03_0AB0_CT – objects. Make sure that the required optional packages are installed.

Your project contains objects that have been created with the options package C7_626P, but this options package is now not installed.Please install the options packages concerned; in this case C7_626P.
The message appears with each project you open, even if it doesn’t contain a C7_626P object.In STEP 7 you have installed the options package C7_626P with an older version than the version of STEP 7. Please upgrade the package C7_626P.
One or more objects of a type cannot be represented.Unable to load the server ‘s7wb53ax dll’ for _S7H_6GK7_443_1BX00_0Xe_CT-objects. Make sure that the required optional packages are installed.The NCM package is not installed and the S7 project contains corresponding objects.Please install the options packages concerned; in this case the NCM options package.
One or more objects of a type cannot be represented.Unable to load the server S7HK31AX.DLL for

_S7H_PLC314_Modul_CT_objects. Make sure that the required optional packages are installed.

Toolbox of SINUMERIK 810 is missing or badly installed.Reinstall the toolbox for SINUMERIK 810.



Error number:Text:Cause:Remedy:
One or more objects of a type cannot be represented.Unable to load the server “s7hsl7ax.dll” for

_S7H_DP_PA_LINK_1_ETER_CT-objects. Make sure that the required optional packages are installed.

The error is probably caused by the permanent upgrading of STEP 7. There are several older versions of STEP 7 one on top of the other.Deinstall STEP 7 manually and then reinstall it.
One or more objects of a type cannot be represented.Unable to load the server “p7ss357x.dll” for

_P7_FM357_6ES7_4AH00_0AE0_CT-objects. Make sure that the required optional packages are installed.

One or more objects of a type cannot be represented. Unable to load the server S7HK31AX.DLL for _P7_PUSTCH_CPU

314_CT_objects. Make sure that the required optional packages are installed.

One or more objects of a type cannot be represented.Unable to load the server S7HK31AX.DLL for _P7_POSTECH_CPU

314_CT_objects. Make sure that the required optional packages are installed.

Either the tool MCU-Pit is not installed at all (product of Simodrive/Sinumerik) or the tool MCU-Pit V4.x has been installed in combination with STEP 7 V5.x.                                         Warning: only the version V4.10 of MCU-Pit is released for STEP 7 V5.x.Install the tool MCU-Pit V4.10. Also, in the directory Drive:\ Siemens\Step7\S7MET you must change the name of the file “p7skmcux.mv5” to “p7skmcux.met”. Then you must delete all the remaining

*.DAT files in this directory and restart STEP 7 (so that the metafiles can be recompiled).

257:7Type of object is not declaredA file needed by STEP 7 has not been found. Possibly the project contains objects for which you need an options package that is not installed to process them.
257:8One or more objects of a type (%1!X!) cannot be represented. Make sure that the required optional packages are installed.There is an object in the project that has to be parameterized with an S7 options package. This options package is not installed.Install the missing S7 options package.
One or more objects of a type (%1!X!) cannot be represented. Make sure that the required optional packages are installed.There is an object in the project that has to be parameterized with an S7 options package. This options package is not installed.Please import the type file for the sensor module IF961-ENC4 configured on the FM456.
257:9The project contains objects of the optional package ‘xxxx’ that cannot be processed because the optional package is not installed or an outdated version is installed.The project probably contains objects for which you need an options package that is not installed to process them, or a newer version of the options package.Please install the options package concerned.



Error number:Text:Cause:Remedy:
In the SIMATIC Manager create a copy of your project (with File > Save as…, Option “With Reorganization (slow)”). Here, the objects that belong to non-installed options packages are deleted in the target project. This error message will then no longer be issued when working with the copy of the project.
257:24creat environment is not implemented.SIMATIC Manager has been started double or computer has crashed.With V2.x, delete the *.dat files in the S7met directory. In any case, procure

the latest correction version.

257:26Not repairable internal system error. The link could

not be inserted.

Message appears when you trigger the function “Display Reference

Data”.                        Links are distorted in the project.

Use the function “Save as” together with the option “With Reorganization


Message also appears when forwarding a project in conjunction with the

symbol table.

257:79The project or parts of it are currently being edited by another application.This message appears when you start the “File > Reorganize…” function if there is still an application open (e.g. Symbol Table) in the project which is being reorganized.Before reorganizing, close all the applications in the project.
257:90The project ‘%1’ contains errors in the internal data structure.Project data damage by a crash/power failure on the computer.

With the “Details” button you can receive more information on the error, if available.

1.  Close all the STEP 7 applications except the SIMATIC Manager.

2.  With the menu command “File > Save as (with reorganization (slow)) ” create a of the project which you can then continue to work with. Because of the faults in the existing project, this copy might not contain all the data of the original project.

257:94Open of project: <Date and Time>

S7fupos: Internal error during save of data of server S7ombstx.dll.

Inconsistent project.

Application FM 453 has registered errors when saving the machine DBs. A possible cause is the shortage of storage space on the computer.

1.  Close all the STEP 7 applications except the SIMATIC Manager.

2.  With the menu command “File > Save as (with reorganization (slow)) ” create a of the project which you can then continue to work with. Because of the faults in the existing project, this copy might not contain all the data of the original project.

258:1Unable to open project data %1.IDB defined as GDB in the symbol table.Define IDB correctly. In the case of V2.1, use Save as… for the project.
258:17The directory C:\Siemens\STEP7\S7proj\temp

exist already.

The temporary SDBDATA directory created must have been destroyed by

the crash.

In the directory [DRIVE]:\Siemens\STEP7\S7TEMP delete the directory

SDBDATA including subdirectories.

258:20After archiving call File > Title Field and note the Title Field specifications. After dearchiving you can reestablish these specifications manually via File

> Title Field.

258:15Some files or data blocks are write-protected and, therefore, the data can only be accessed on a read-only basis. This may be due to the fact that write access does not exist for the directory or drive where this data is located, or the block may have been saved as write-protected for reference purposes.Ensure that you are authorized to access the drive or folder where the data is located.



Error number:Text:Cause:Remedy:
There are still blocks (FCs, FBs, DBs and/or OBs) open and, as a result, the associated projects and directories cannot be deleted.Close any STEP 7 (and WinCC flex) editors which are still open. We also advise you to close STEP 7 (and WinCC flex). Go to the Task Manager to check whether there are still any S7 processes in operation and, if so, close them. Then start STEP 7 again and delete the project via “File > Delete”.
If the remedies under the last above points do not help, close STEP 7 again and delete the project in the Explorer. You can find the folder for the saved project in Fig. 01 under

“<Drive>\Program Files\Siemens\Step7\S7Proj\<Project>

It is possible that the data areas of the HW Config, NetPro, Symbol Table or other STEP 7 components have not been released again completely after being closed. You should be able to delete the projects again after rebooting your PC.

If the last remedy point does not help either and the project which you wish to delete is still present under the menu commands “File > Open…” and “File > Delete…”, some of the files in the SIMATIC software may be damaged. In most cases, the repair function on the STEP 7 CD can be used to restore the software status on your PC.Otherwise, we recommend that you uninstall STEP 7 completely beforehand and also delete the directories in the Registry Editor. Follow the procedure precisely as described in our FAQ on “Complete Deinstallation of STEP 7 including all Software Packages”. You can find this FAQ in Entry ID 189025.
275:5020There is an internal error in the file S7nlvblx.dll.Save your entries and close the application. Switch your computer off/on and restart the application. If the error reoccurs, then please get in touch with your system administrator.
276:27No valid connection path between local and remote partners (e.g.

because of missing network connection or exhausted  resources).

HotFix 1 for SP2 clears this problem. This error is still in SP3 at the moment,

but will be cleared by another Add On.

276:42Loopback – Connecting are not allowed!Loopback connections are not permitted. You can specify an identical address as local and remote user address, but then SDB generation is rejected with an error message.Problem (V4.02 and higher) is cleared with correction release K4.02.5. You can ignore this error message, because the communication functions despite this error message.
276:5020An internal error occurred. (Call:


288:48Unable to reach the module (z.B.) 413-2DP by means of the subnet assigned to the programming device/PC.In a new project, for example, a hardware upload was made from the CPU to the PG. In the attempt to immediately download this upload, this error message appears.                                          Problem: under Properties in Options -> Set PG/PC interface, 1 is preset as local user address on the MPI bus. But this does not match the address configured in the hardware upload and hence the error message.Under Properties in Options -> Set PG/PC interface, set the local user address to 0 (or the one configured previously).



Error number:Text:Cause:Remedy:
289:2The data base is write-protected or there are not

enough memory.

XREF with V2.1.0 + standard control->Correction K2.1.3 or higher
289:25Two modules could not be translated back.XREF with V2.1.0 + standard control->Correction K2.1.3 or higher
289:35The selected button can not be executed for the selected menu.You have selected a block folder and triggered printing.This is how you print out the reference data for the blocks contained in the folder:

1.  Mark the block folder.

2.  Select the menu command Options > Reference Data > Display.

In this way you display the reference data first. A check is made as to whether reference data is available and whether it is up to date. If necessary you can have the data updated. You can choose which table you want to have printed with which filter setting.

This is how you print out the all the blocks of the container with the editor with which they have been created:                                                   1. Open the block folder.

2.  Select all the blocks (e.g. via the menu command Edit > Select All).

3.  Select the menu command File > Print > Object.

291:416The file is occupied by another application for writing.Close all the applications that have opened the symbol table and restart the


291:416The symbol table is being by another process.In the window that opens, the symbols are greyed out since editing is not possible. The Symbol Editor does not show any changes (it is not possible to save the table) and it is not possible to access the symbols.Editing the entries in the symbol editor is still possible. Make the changes directly in the symbol table and save it. After saving the table, you can edit the symbols in the LAD/FBD/STL editor after closing and opening the dialog box again.

If you want to edit the symbols directly in the LAD/FBD/STL editor, close the symbol editor and reopen the dialog box “Edit symbols” in the LAD/FBD/STL editor. Editing is now possible. You can also simultaneously open the symbol table. Changes in other applications are automatically applied in the table.



Error number:Text:Cause:Remedy:
291:416The symbol table is occupied by another processIn this case you can no longer edit, delete or import the symbol table. The symbol table is not occupied by any other application for writing. You have stored the project locally on the hard disk. The same error is also displayed with the “Save with Reorganization” function of the project.One possible cause of the error is that after a program crash of the symbol editor, temporary files are not deleted in the S7 data management. In order to control this, check your project:

1.  In each project there is a “..\YDBs” directory where all the symbol lists are stored.

2.  Use Explorer to find files with the suffix .dbf tmp in this and all subordinate directories.

3.  Terminate the STEP7 applications and delete these files. Then you can edit all the symbol lists again.

It is imperative to make sure that you do not delete other files by mistake in the project, because this could destroy the project.

1.  First of all try closing all the STEP 7 applications including the SIMATIC Manager. If the symbol table is then opened via the SIMATIC Manager, an attempt is first made to clear any inconsistencies in the symbol table through a sort of internal “repair” service.

2.  If editing the symbol table continues to be impossible, then please reboot your computer to make sure that all the STEP 7 applications have been closed. Then open the symbol table again.

3.  If none of the above steps is successful, open the “..\YDB” path mentioned above in the project directory. In this directory delete any files with the file name “deleted.txt” and “update.txt” and a size of 0 KB and any empty folders. You will then be able to edit the symbol table again

291:560Internal error: Incorrect object ID.The symtabs function has failed – ambiguous entry in the symbol list for

FC names.

Delete the line for the FC in the symbol table.
When calling an FB, a DB was assigned that is already assigned to

another FB in the symbol table.

Assign a different DB in the call or correct the assignment in the symbol


Copy out the symbol table, then open and close the block, and then copy

back the symbol table.

291:1392No symbol table found. No symbol could be


292:19Error by opening of a file.The file either has no valid B+C287trieve format or it is damaged.Replace the file or delete it.
293:1The reference data could no be generated.The data medium is write-protected.Remove write-protection.
Under NT: possibly insufficient access rights.You need at least main user rights.
293:2The reference data could no be generated for the

SFC14 or the FC22.

Use the function “Save as” together with the option “With Reorganization




Error number:Text:Cause:Remedy:
294:6Unable to copy the block %2.The OBxy is not supported by the CPU.This OBxy cannot and must not be downloaded into this CPU. You can possibly use another OBxy with a similar function, which is suitable for this CPU and then download it.
When programming an EPROM via an external prommer: the prommer

cable is plugged in incorrectly.

Plug in the prommer cable so that the connector with the yellow sticker is

connected to the prommer.

Illegal command in the modulThe module FCxx could not be copied.

(D280) Error during compiling of module in the S7-300.

This message appears, if your program has a marker (example M8000.0) which address is not supported in the CPU. Change the address and repeat the download. If the SF LED is not still erased after download, switch the CPU into STOP and after in RUN again.
294:23Unable to copy the block %2. Do you want to

continue the copy procedure?

A block of this type already exists and it may not be overwritten.Delete the equivalent block in the ONLINE database and repeat the transfer.
The automation system is in the RUN operating mode.Put the automation system into an operating mode that permits copying.
SDBs can only be transferred in the STOP mode.
A block of this type and number is not permitted on the automation


Check whether a block of this type and this number may be copied onto an

automation system of the present type.

The block is using operands beyond the area of the CPU (e.g. EW 128

with S7-300 CPU).

Check the block with reference to the addresses used whether they do not

exceed the permitted address area in the CPU implemented.

The block is using statements that are not realized in the CPU (e.g. ENT

with S7-300 CPU).

Check the block with reference to the commands used based on the

operations list for the CPU implemented.

The block has to much local data (e.g. more than 256 bytes with S7-300 CPU).When implementing an S7-300, you must reduce the local data area for this block. If you implement an S7-400 CPU, you can parameterize the necessary local data area for each run level.
Referenced block SFC, SFB is not permitted in this module.Check whether the blocks that are to be downloaded are permitted on the

CPU concerned.

294:27The block %2 is being processed by another application or another user at the moment.\nDo you want to create the reference data for the saved version of the block?Multi-users: the block specified is being processed at the moment by another application or by another user. You can create a copy of the last version saved or cancel the function.If you are working with several colleagues on your S7 project, then it is recommended not to process this block without prior synchronization with your colleagues.
Single Users: the block is opened ONLINE as OFFLINE.Close the block once; ONLINE or OFFLINE.
295:17248The order was interrupted to the TS-Adapter

because of transmission error.

The initialization string is not correct or in this form does not work together

with the modem connected to the system.

The initialization string in the TS adapter must be modified in the direct

operating mode so that it matches the modem.



Error number:Text:Cause:Remedy:
On the system there is not a TS adapter but a PC adapter on the modem. The TS adapter has order number


Exchange the adapter for a TS adapter.
Possibly the terminator on the PROFIBUS cable on the system side

(TeleService) is switched on.

Switch off the bus terminator.
Possible the modem is sending too much information to the TS adapter so that it doesn’t get the CONNECT. (Occurs with V5 adapters)Add W0 to the Initstring in the adapter (this suppresses the sending of extended data)
If you attempt to get connected via long telephone routes (abroad), then it might happen that some feedback messages have too long a runtime.In TeleService under Options -> Settings -> Monitoring Times, change the value for Acknowledgment/Signal from Automatic to 5000ms / 4000ms.
295:20484There is not installed a modem which is compatible with teleservice.Install a suitable modem and set the modem to correspond with your configuration. Define the TeleService-specific properties of your installed modem in the menu command Options > Settings.
295:20486The TAPI-Order was closed with the error “Order


Basically communication between (local) PC and modem (via the serial

connection) is not correct or cannot even be started.

Check the connection between the (local) PC and modem for both hardware

and software/driver faults.

Under Windows (Start –> Settings –> Control Panel –> Modems) an incorrect (or no) modem driver has been installed, which does not work in conjunction with the modem connected.Install the appropriate modem driver for this modem. Also set this new modem in TeleService under Set Connection —> Modem (double-click the telephone book entry and then select the Modem item).
The wrong modem driver was selected under TeleService from the

selection list of modems that are already installed under Windows.

Set the correct modem driver in the selection list.
The modem is not connected to a serial interface (or to the wrong one).Connect the modem to the correct serial interface.
The modem is switched off.Switch on the modem.
295:32768TAPI-subsystem dues supply not expected error

code <TAPI-Error-Code>

ALLOCATED 0x80000001
296:5309The variables of the instance data block which contain system attributes for messages are not aggree with the variables in the function block.Clearance: check the function block and save it again if necessary.



Error number:Text:Cause:Remedy:
300:13Data basis could not be started.Occurs as a consequence of message 256:94 and details 256:24/256:63 when executing the function “Reorganize” or “Save as… with consistency check”.

This occurs when a link is lost in the SYBASE database.

The problem can be solved by deleting the file AMDBASE.LOG. Search in your project path for the log file of the SYBASE database (Amdbase.db). WARNING: if this file does not exist, then search the project for LOG or LOC files.
If you cannot find this file, then proceed as follows.

Restore the log file by entering the following start line via “Start/Run…” on the Windows user interface:

dbsrv50 -f D:\..Project path..\Project\AMOBJS\Amdbase.db


For example, for the “Deissw01” project on drive “C” in the standard STEP 7 project directory you enter

dbsrv50 -f c:\Siemens\step7\S7proj\deissw01\Amobjs\Amdbase.db


The -f (force) switch has the effect that the DB file is recovered to the last status saved even if the necessary log file is not available.

Occurs after dearchiving a project in STEP 7 V5.0. It has been created in

the version V4.02.x.

After <Save as…><with reorganization> again clears the problem.
314:8At least one of the selected variables cannot be inserted at this point.If, while you are processing a project in STEP 7 V5.3 which has been created with STEP 7 V5.1 and the error message described above appears in the LAD/STL/FBD editor when you insert a declaration line within an FB or FC, please check the names of the formal parameters in the declaration line for the block in question. This could be due to the fact that the name “Ret_Val” has been assigned to a formal parameter (IN, OUT, IN_OUT, STAT or TEMP variable).In this event, the name “Ret_Val” must be renamed.

1.  From STEP 7 version V5.2 onwards, users may no longer define the key term “Ret_Val” for the formal parameters. Version V5.2 still supported the entry “Ret_Val” in the declaration line in STEP 7 projects which were created in V5.1 and did not stop the block.

2.  However, STEP 7 version V5.3 no longer supports the name “Ret_Val” in the declaration line, and the behavior described above occurs.

724:21OM TD/OP: Data basis conflict of version

file: C:\[step7-pfad]\[Projektname]\S7TDOP.DBF has the version 50000.

This program expected the version 10000.

The versions of STEP 7 and ProTool are incompatible with those of the project.                     STEP 7 is V4.02.x and ProTool V5.Upgrade STEP 7 to V5.x or deinstall ProTool and install V4.02 of ProTool
1230:1001Opening of the station failed.
1230:2001Unable to insert the object.You have tried to slot an object that is not available (e.g. the header for an

object group or module class).

Select an object (subrack, module, interface module…) from the hardware

catalog, which you can slot in the required location.



Error number:Text:Cause:Remedy:
1230:2009Changes cannot be made. Save your changes in other applicationsThe error message indicates that access to the object is not possible at the moment and that the object could not be blocked. This error message can have various causes:

1.  The object is currently being processed by another application or user and has therefore been blocked.

2.  There is insufficient memory available.

The following steps permit you to process the object:

1.  Save the changes made in all other applications and make sure that no other user is currently processing this object.

2.  Make sure that there is sufficient virtual memory on your computer, see in this case the informations of the Readme file of STEP 7 by 3.2 Memory Requirements.


Please consider the requirements of the actual installed STEP 7 software in refer to your PC, which are described in the readme file.

1230:2015Creating the configuration data failed.Hard disk is full.Deleted all the unnecessary files on the hard disk.
No folder “…SIEMENS\STEP7\S7TMP” available or the folder is write-


Remove the write-protection from the folder “…SIEMENS\STEP7\S7TMP” or

create the folder.

S7 program or M7 program container is missing.Create S7 program or M7 program container.
Defective project?Use “Save as… with reorganization”
The compilation (= creation of the configuration data) has been


Reinstall STEP 7.
Error attempting to generate the configuration data. Message refers to the V2-projects by Save as with Reorganization.Subnet addresses of different networks are identical.Check the subnet addresses and make appropriate corrections in the case of identical subnet addresses.
1230:2016No changes can be made in this station.No more modules can be inserted in the HW Config.Use “Save as… with reorganization” for the project. Please see also the

instruction by the error message 256:92.

1230:2018Another application made changes to your station. Close this station and re-open it.Another S7 application has changed, for example, via network, the station currently being processed. The changed objects (subrack, modules, slaves, etc.) can no longer be displayed.

The station has been blocked for further processing.

You can remove the block by closing the station and re-opening it. This makes the changes of the other application effective.
1230:3000The system data could not be recreated because

the configuration is inconsistent.

Check consistency.
2508:1099Error by programming of error diagnostic data for

<name of variable>.

Group message, behind it detailed messages are listed that occurred

during the last function executed.

Please press the “Details” button and analyze the detailed messages.



Error number:Text:Cause:Remedy:
2517:5The start of an application has occurred an error.Message appears when opening a HIGRAPH source. With the following software constellation:

STEP 7 V5.0 + SP 3 S7-HIGRAPH V4.01.1

S7 project created with S7-Higraph V5.x

Cleared with K4.01.2.
2665:4156Because of the changes made to the configuration, the configuration file for this SIMATIC PC station has to be created again with NetPro. To do this, use the NetPro menu command “Network > Save and Compile …”
2760:11communication to higraph cannnot be accessed
2775:777Address is not correct.You have selected a user address that is already occupied.Please select another address or connect your user to another subnetwork.
2775:785The bit rate of 187,5 kbit/s for the modul MBK-P is

not supported in station SIMATIC 400(1).

In STEP7 V5+SP3 and higher the baud rate must not be written with a

comma, e.g. 187,5_supp =1

Open and edit the file: enter ‘187.5_supp =1’ instead of ‘187,5_supp =1’.

Execute Options -> UPDATE CATALOG.

2775:1829The data management of “Set PG/PC interface” can not save the requested value.An attempt was made to save a parameter value in the database of the program “Set PG/PC interface”. This write procedure could not be concluded successfully.
2775:1860Caution: there are other active nodes (sender parameter assignment master) in station %1 which also have to be reloaded.
3020:13File name entered is not valid, or Project is invalid,

if you attempt to open a project.

This message appears when you stored your project on a network drive which is connected to the following path via the Internet Explorer or a logon script:

\\<Servername>.<DNS-Suffix>\<Share> (Example:

\\\share) or

\\<IP address>\<share> (Example: \\\share).

However, this path cannot be found since the network connection is stored only symbolically in the registry.

In order to be able to open your project, please connect the share (without the domain name) via

\\<Servername>\<share> (Example: \\COMPUTER\share).


If you have to enter the pathname via the IP address, you can establish a connection between the IP address and the computer name in the “hosts” file. The file can be found with the Windows path “\system32\drivers\etc” (Example: C:\WINNT\system32\drivers\etc).



Error number:Text:Cause:Remedy:
3020:25Projects which are opened can not be archived. Make sure that in non STEP 7 application objects of the projects … are opened in the directory C:…The reason for this error message are blocked files, which are also blocked though all the windows of editors and projects are closed. This is possible when the program is activ and the last access was to the archived project. Souch programs are not always to see as user window.With WinCC or WinCC flexible will be started a SQL server which should be stopped. You will find this in the task bar. You will also find here icons of WinCC flexible, which are mini web or smart server. If you will stop these applications the archiving should be possible again. If not, then start the task manager and check in the process list whether the process “hmies.exe” is activ. If you delete this process, then the archiving should be possible again.
3020:47This processing status is triggered by PKUnZip in different situations, in particular always when an existing project is overwritten during dearchiving and in the dearchiving options the entry “Overwrite objects with identical names” is not set to “All Files”.In this – most common – case you can ignore the message.
The archive file has not been created with PKZip. In particular archives that have been created with WinZip or “PKZip for Windows” and contain “long file names” can lead to this error.Execute dearchiving with the archiving program used to create the archive.
The archive file has been created with a version of PKZip that is newer

than the version of PKUnZip that is installed on the computer.

If you are using an old version of PKUnZip, install the latest version.
The archive file is damaged. Checksum errors (so-called CRC errors) have been detected for one or more files. Therefore the files could not be dearchived correctly. The cause of such checksum errors can in particular be:

damaged floppy disks,                                                            transfer errors when copying, in particular with network drives, file transfer or e-mail,

or at the time of archiving the project or parts of it were still open.


Try to get a good copy of your archive file. If this is not possible, you can try to save what is possible to save using the repair option of PKZip. Start the MS-DOS prompt and enter the command ‘pkzipfix archiv’. A file is created called – if pkzipfix can even identify the file as being ZIP- compatible. From the SIMATIC Manager dearchive the file instead of your original archive file.

The directories in the archive file have too great a nesting depth to be able to be unpacked under the specified target directory. PKUnZip cannot create any directories whose absolute path name is longer than 66 characters (from the drive designation to the ‘\’ at the end of the path).You can either dearchive the archive file with PKUnZip as follows: select the target directory for dearchiving the Root directory of drive. Close all the STEP 7 applications. Move the dearchived project directory with the Explorer to the location where the project is to be stored. Start the SIMATIC Manager and open the project via the “Browse” button in the “Open” dialog. Or you can use WinZip or PKZIP 2.50 directly at the required location.
The project already exists and individual files could not be overwritten when dearchiving, because they are write-protected.Delete the file attribute “write-protected”. You can do this for example for individual files from the Explorer via the file properties, or you start the MS- DOS prompt, get into the project directory using “cd” and then enter the command “attrib -r /s”. Now repeat the dearchiving procedure.




Error number:Text:Cause:Remedy:
The project already exists and individual files could not be overwritten when dearchiving, because the project or objects from the project are already open.Close all the STEP 7 applications, restart the SIMATIC Manager and dearchive the project without opening the project to be overwritten beforehand.
3020:49Unable to retrieve the project. The archive file might be defective.The archive file has not been created with PKZip. In particular archives that have been created with WinZip or “PKZip for Windows” and include “long file names” can lead to this error.Dearchive using the archiving program with which the archive was created.
The archive file has been created with a version of PKZip that is newer

than the version of PKUnZip installed on this computer.

If you are using an old version of PKUnZip, then install the latest version.
The archive file is damaged.Try to get a good copy of your archive file. If this is not possible, you can try to save what is possible to save using the repair option of PKZip.

1. Start the MS-DOS prompt and enter the command ‘pkzipfix archiv’. A file is created called – if pkzipfix can even identify the file as being ZIP-compatible. From the SIMATIC Manager dearchive the file instead of your original archive file.

The data medium or the directory in which the dearchived project is to be stored is write-protected, or you have no write authorization for the network drive.Remove the write-protection or obtain write authorization for the network drive or dearchive the project into a different directory.
3022:4121The FB is not available

The instance declaration is missing

If during compilation in S7-PDIAG the mentioned error message, then it is probably the case that the S7-PDIAG blocks have also been copied from another STEP 7 during the copying procedure. This is not permissible, because the associated SFBs are then no longer up to date.1.  Delete all SFBs. Open and save the FBs, FCs and OBs, which fetches the SFBs from the current library.

2.  Now compile the blocks of the S7 program again with S7-DIAG, which should solve the problem.

Make the Check Block Consistency and compile the complete STEP 7


3022:4121Invalid data type…”,The error message is probably caused by an associated value with an invalid data type. Please also refer to the information in the Online Help of S7-DIAG concerning the data types that are valid for associated values.Excerpt of the Online Help of S7-PDIAG:

“This associated value can have a parameter of the type BOOL, BYTE, CHAR, WORD, INT, DWORD, DINT or REAL from the E, A, M or DB areas. Likewise you can enter local variables of an FB to which an error definition is attached. These are extended upon generation according to the type instance concept.

3280:503The registry database is not set up correctly for the

SIMATIC Manager. Install STEP 7 again.

Installation is faulty.



Error number:Text:Cause:Remedy:
3280:708No objects can be copied or moved from projects/libraries of the current version to projects/libraries of version 2.x.In STEP 7 there is no downward compatibility, the data management in V2 and >V3 is not the same, so blocks created with STEP 7 V3 or higher cannot be copied or moved into V2.x projects .An attempt was made to copy or move an object from a version V3 project or from a version V3 library into a version V2 project or library. This is not possible because of incompatibility.
3280:709The project or the library ‘%1’ is on a write-

protected medium.

The project is either located on a write-protected floppy disk or you do not

have write authorization for the drive.

Remove the write-protection if you want to modify objects in this project.

Please see the instruction by error message 256:92.

The project catalog was released in the Windows Explorer with read/write


Release higher-level catalog of the project (e.g. Step7\S7Proj) for access

via network drive.

3280:712File name entered is not valid. Project is invalid.

(If you attempt to open a project)

Please see the informations by error message 3020:13.
3280:999The internet explorer is not installed in your PC.STEP 7 V5 has been installed without the Internet Explorer and you are

trying to start the ONLINE Help.

Please install the Internet Explorer V4.0 and then reinstall STEP 7.
The ONLINE Help was started and the Internet Explorer was installed

after the installation of STEP 7.

Reinstall STEP 7.
3531:1The diagnostic block could not be created.Standard blocks in the program originate from the PLC and not from the library.

If the project has been created per upload by the PLC with an earlier version of STEP 7 or standard blocks have been copied from the PLC into the offline program, then the interface of the SFBs and SFCs in the project only has a Default Symbolic (parameter name = “IN0”, “IN1” etc. instead of symbolic names as described in the Help). In this case the same error is reported.

Check your interface to the user block.

If your user program contains standard blocks with Default Symbolic, then please delete these SFBs and SFCs and reinsert them from the library. This corrects the interface of these blocks.

3534:63While reporting a system error: an internal error has ocurredTo be able to generate the reference data without this message, proceed as follows:

1.  Delete Diagnostics-FB49 and Diagnostics-DB49 from your STEP 7 Project resp. Block container.

2.  Newly generate the reference data by selecting the block container and the menu task Extras > Reference data > generate.

This message does no longer appear when generating reference data.

You can regenerate the FB49 and DB49 in the Hardware-configuration as follows:

1.  Highlight the CPU with the cursor. Under “Extras > reporting system errors… > Register: General”, you can now newly generate the Diagnostics- FB and the Diagnostics-DB. Finally, save and translate the Hardware configuration once more.

2.  You can also newly generate the Diagnostics-FB and the Diagnostics-DB by means of “Save and translate” if you change the following setting: Under “Station > Properties … > Register: Settings” the option “Calling when saving and translating” has to be activated.

3534:94Inconsistent of hardware configurationThe hardware configuration is either inconsistent or it was made changing which are not still save and compiled.If it is not possible to compile the hardware configuration after this message, so make a little change in the hardware configuration. After it is possible again to save and compile.



Error number:Text:Cause:Remedy:
4050:1The resources file for this language is not in the directory in which you have installed this program. This is why the menus, dialog boxes and the online Help are in English in S7-PLCSIM.Install the files that are required for the language desired. If necessary, reinstall S7-PLCSIM and select the required language.
4050:2Closing the subwindow “CPU” simultaneously closes the simulation session. However, you can close a CPU and start a new simulation session with another CPU.Make sure that you always have on subwindow open in S7-PLCSIM. If you need more space on your screen, you can reduce the subwindow to icon size.
4050:3You can only change the MPI address if there are no applications linked

with the simulation.

Close all the associated applications or disconnect from the simulation.
4050:4You can only ever have one simulated automation system activated. If you open a second simulated automation system, the one opened first is closed. If you want to continue the function, press “Yes”. Press “No” to cancel.
4050:5You cannot exit S7-PLCSIM if there is still a connection set up to STEP 7 (e.g. SIMATIC Manager, variable table, program editor). STEP 7 indicates in a message that the connection to the CPU has been interrupted. You can then continue working offline.Before exiting S7-PLCSIM you must close the associated applications in STEP 7 or clear down the connection to STEP 7. (In order to disconnect the SIMATIC Manager from S7-PLCSIM you must close both the online program and the offline program.)
4050:6When doing an overall reset (MRES), all the blocks are deleted and the

memory of the simulated automation system is reset.

If you want to abort the overall reset, click “No”. If you wish to do an overall

reset, click “Yes” to continue the function.

4050:7You have attempted to open a simulation that has just recently been used, but which is no longer available or cannot be found. S7-PLCSIM deletes the file name from the menu.Find the simulated program using the menu command Simulation > Open PLC. If the program is no longer available, you must recreate the simulation.
4050:100The address you have specified has a format that STEP 7 does not support.Enter the address in a format that is supported by STEP 7 (IEC or SIMATIC).


IEC: PIB0, PQB0, PIW2, PQW2, I0.0, Q0.0

C1SIMATIC: PEB0, PAB0, PEW2, PAW2, E0.0, A0.0, Z1

4050:101The value you have entered is not in the valid range for the selected format. For example, you cannot enter “FF” (hexadecimal value) in a field in which binary values are supposed to be entered.Enter the value in a valid format or change the format of the field.
4050:102The value you have entered is not a decimal number.Enter decimal number (e.g. 0, 1, 13).
4050:200Since there is a danger of changing an actual online program by mistake, you cannot communicate with “real” CPUs whilst the simulation is activated.Close all the windows and applications that have been used in the simulation of your program before going online with an actual CPU.
4299:158No connection to FM355/455.Old firmware on the FM.Upgrade the firmware of FM.



Error number:Text:Cause:Remedy:
4431:2011The Authorisation for SIMATIC PDM is not installed. SIMATIC PDM could not be started.Authorization permitting you to integrate SIMATIC PDM in STEP 7 is missing. This authorization is an option authorization that has to be installed in addition to the basic authorization of SIMATIC PDM.You must install the additional authorization for integrating SIMATIC PDM in STEP 7.
4502:298System error 33This meesage appears during the upload of the hardware configuration. It is possible that the load of the SDBs was not complete or incorrect.Make a reset of the CPU modul and load the hardware configuration of the offline project again.
4502:625An error occured while creating or interpreting the system SDB’s.   “.

Error while creating systemdata………………………………. “.

Regarding mentioned messages occur while saving and translating in HW config if the following applies:

1.  You projected and assigned a CP to a subnet in your Hardware configuration. Files with the extension .”err” are missing in the folder “<Siemens-index>\Step7\S7WBX\RUL”.

2.  Files with the extension .”err” will be deleted by some optimization programs – like e.g. TuneUp.

Step7 has to be reinstalled or the missing “.err” files have to be copied from a different computer in order to be able to translate the hardware configuration again.


If you copy the files from a second STEP 7 installation, please make sure that this installation contains exactly the same STEP 7 version, the same servicepack and the same hotfix.

4561:142The Authorisation for Standard PID Control is not


Meldung von


D033Error of protokolJob jam on the CPU.In the HW Config increase the setting for the communications load for the


D042Error during notice by module status of CPU400.A PQW is being monitored. You cannot read back PQWs, the CPU then

reports this error.

Monitor values with VAT and wait for new CPUs.
D043Error of data: The reference order is not available.When controlling using Variable Monitoring it might happen that if too many control jobs are sent to the CPU, they are rejected by the CPU because its buffer is full.Acknowledge the message and reduce the frequency of control jobs.
D062Resources error, job list is too full.Please see the informations by error message 33:53346.
D063Same as D064
D064CPU 300 does not delete trigger events, the events then build up.Switch CPU off/on. Problem cleared in the following CPUs: 6ES7 313-1AD01-0AB0

6ES7 314-5AE01-0AB0

6ES7 314-1AE02-0AB0

6ES7 315-1AF01-0AB0

6ES7 315-2AF01-0AB0

D0AAD0AA: The time limit is exceeded in process


Communications load is too high.Increase the communications load of the CPU from (default) 20% to 50%.



Error number:Text:Cause:Remedy:
Message appears with the function “Control via VAT” to an address from the memory areas I, O, M, Timer, Counter, DB, which is not available in the broadest sense.Please check the syntax of the address in the VAT, or whether the address is available in the system or perhaps not addressable (wiring fault, hardware fault).
D204D204: An error in the rules of coordinating has


When attempting to load system data, in the background a variable table

was still open online.

Close the variable table and retransfer the system data.
D20CThe OB can not be copied because the belong

layer is not available.

Message comes from a CPU. An attempt is being made to transfer an OB

onto this CPU, which is not permissible.

If possible, rename the OB or even delete it in the OFFLINE database and

retrigger the transfer.

D240An error in the rules of coordinating has occured.Occurs if a block that is to be overwritten online is still being accessed. In

V4.01 with blocks in the call environment.

Deactivate the setting “Call path with test/call environment”, then the block

can be downloaded.

An error in the rules of coordinating has occured.Occurs when an object is accessed online (also VAT).Close everything except HW Config.
Error during opening of a empty document. Error

during opening of a symbolic table.

An incompatible OPC Manager is installed. In the system path of

Windows vcf1.lic is responsible for this.

Delete this file and the file vcf132.ocx and reinstall STEP 7.
Setup does not start with error message: in function “Sdbitmap”:unable to crate dialog make sure the _isres.dll is in _setup.libThe _isres.dll is needed for switching languages.Start Setup with the extension ol:b, then the Setup is forced to start in English.
D280Error during compilation of a modul in S7-300. The module OB1 could not be copied.This message appears, when the defined variable (marker, in- or output) in a module is not in the power range of the CPU.Example, this message appears if the number of outputs is 8192 byte by the CPU and you have defined a variable outside of this range. Check the addresses with the definition of your variables.
D406The requested informations are not available.Number of possible connections has been exceeded.Check the connections and reduce where appropriate. Static connections

can be converted into dynamic connections.

EA 02The protocols of communication software (S7DOS) and the interface module (CP) are not compatible.The customer has a STEP 7 V5+SP1 + recent PDM and a CP 443-5 Ext

> V2.7. The new RPC 7 protocol is used for data record routing between the CP and S7DOS. Unfortunately the CP up to version V2.7 does not support this function.

Upgrade CP 443-5 to a version >V2.7.
The user is using the correct components STEP 7 V5 + SP2 + PDM, but

has a CP that does not have the DSGW.

Check the configuration and replace the CP being used with a different CP

that has this function.

Set PG/PC interface
NoneError message by diagnostic: “Profibus/MPI Network diagnostic”.

Error: requested parameter could not be read from the register data basis!

Firmware/driver errorThis behavior no longer occurs in SOFTNET PROFIBUS S7 V5.0.
Message without numerical order
S7OTBLSTXIncompatible versionen by S7OTBLDX.DLL and


S7 applications are still running at Setup of STEP 7.Please close all S7 applications and restart SETUP.



Error number:Text:Cause:Remedy:
STEP 7 has been installed on a computer on which an S7 options package or version of ProTool /WIN CC is already installed which is not compatible with the version of STEP 7.Please search for “S7OT*.*” on all your local drives and delete them. Then please restart the Setup of STEP 7.