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Siemens Step7 PLC Error Code Causes/Solutions

Siemens Step7 Error codes and causes, find the error number in table and check cause.

Error number:Text:Cause:Remedy:
1:2063TBI error 2063 Error during the function chdirTBI can occur with the call AUTgetlinkedObjects. There should be an

AUT API tracer in the meantime.

7:6160CPUs can only be connected via K bus or MPI bus

(line 1)

Split the desired path of the global data into several circuits. Make sure that

you only use on bus per circuit.

11:103Cannot read CPU information on module, such as rated type, actual type and status of the module. Module might not be configured.Check the logical address of the module. Check the slot and the configured slot.
13:31The online connection from the PG to the module (SDB addressee) could not be set up. Connection hardware is faulty (e.g. connection cable removed).Clear the fault in the connection to the module (SDB addressee) and you can then repeat the attempt to set up the connection in this dialog.
The online connection from the PG to the module (SDB addressee) could not be set up. The module (SDB addressee) is in the wrong operating mode.Change the operating mode of the module (SDB addressee) and you can then repeat the attempt to set up the connection in this dialog.
The online connection from the PG to the module (SDB addressee) could not be set up. You have specified an incorrect MPI address with STEP 7.If you have specified an incorrect MPI address, then:

1.  Acknowledge this dialog

2.  Correct the MPI address with STEP 7

3.  Restart the “Load” function

13:32There is a problem with the connection to the receiver of the HW configurationThe online connection from the PG to the module (SDB addressee) could not be set up. The module recognized an error with the next communications call.Clear the fault in the connection, change the operating mode of the module or clear the storage bottleneck on the module and then you can repeat the attempt to set up the connection in this dialog.
Connection hardware is faulty (e.g. connection cable removed)Plug the cable in.
Module is in the wrong operating modeCheck the operating mode.
Storage bottleneck on the module
Inconsistent HW configuration in the PGIf the HW configuration is inconsistent in the PG, then:

1.  Acknowledge this dialog

2.  Correct the HW configuration in the configuration table

3.  Restart the “Load” function

When loading the system data on to the memory card, this message is

displayed if there are invalid SDBs in the SDB folder.

Delete the system data in the SIMATIC Manager and then restart the HW


13:48Internal error 0400 Station cannot be generated.The station cannot be created in the selected project because …
The project directory is write-protectedRemove the write-protection for the project directory
The project directory is on a network drive and the connection cannot be

set up

Set up the connection to the network drive
No more storage capacity on the target driveDelete any data no longer needed on the target drive



Error number:Text:Cause:Remedy:
13:76Inconsistent hardware configuration in the

programming device.

Inconsistent HW configuration in the PGIn HW Config analyze the HW configuration via the menu “Station\Check


Folder “…\SIEMENS\STEP7\S7TMP” is missing or write-protected
Missing authorization or an options package that generates the SDBs for

a specific module.

“Error in generating the system data” when downloading or saving a station in HW ConfigThe environment tag S7TMP is not set. The path c:\\SDBDATA\s7hwcnfk\down\r00s02\sdb0.dat is completely or partly invalidCheck that the paths in your Autoexec.bat are set as follows: SET PATH=”C:\SIEMENS\COMMON\SQLANY”


13:77While interpreting the system data blocks (SDBs) uploaded from the module, an error was recognized in the programming device and processing halted.Inconsistent HW configuration in module, occurs when previous loading of SDBs into the module was incomplete or faulty.
Options package for configuring specific modules (e.g. CPs) is not


13:136The maximum possible number of slots within all inserted slaves has been exceeded by %1 slot(s).”More slaves have been configured than permitted by the master systemSplit the slaves across different segments if possible or reduce the number of slaves for the master system concerned.
13:181Internal error:Multicomputig cannot have the type


Error in HW Config of first 4.02.x versionAdd another CPU and then deleted it. The CPU is then automatically set to

single-computing again

13:422No master system is assigned to the DP slave.Missing objectRight-click for pop-up menu, select “Add master system” and then configure

the CP again as slave

13:520The address entered is already occupied. STEP 7 has already calculated the next free address.Confirm the address suggested by STEP 7 or enter a new address.
13:4003Module cannot be inserted here. You can use only

DP slaves in a master system.

An attempt was made to connect a device directly to the DP bus, which

does not have its own interface.

In the HW catalog insert a hierarchy level for this device as DP slave
13:4040The number of slots of the CPU or the master

system has been exceeded or exhausted.

Maximum number of modules already configured.New modules can only be slotted after deleting slaves or their modules.
13:4241The offline configuration (%2) differs from the hardware configuration of the PLC (%3). Do you still want to continue?An external module (interbus interfacing) from the Phoenix company was slottedRemove external module (error can be ignored)
13:4337Unable to set up connection to module %1


The online connection from the PG to the module (SDB addressee) could

not be set up.



Error number:Text:Cause:Remedy:
Connection hardware is faulty.Make physical check of connections (cable break,…). Repeat attempt to set

up connection.

Module (SDB addressee) is in the wrong operating mode.Check operating mode. Repeat attempt to set up connection.
You have specified an incorrect MPI address in the dialog box when loading to a PLC.If you have specified an incorrect MPI address in the dialog box, then proceed as follows:

Acknowledge this dialog

2. Correct the MPI address and trigger the Load function again.



PG/PC with PROFIBUS interface is connected directly with an intelligent DP slave (e.g. ET 200X BM147/CPU) and the PG/PC interface is set incorrectly.Proceed as follows if the PG/PC interface is set incorrectly:

1.  Navigate from the Windows Start bar (Start button) to SIMATIC > Step7 > Set PG-PC interface.

2.  In the Access Path tab mark the PROFIBUS CP and click the Properties button.                                                   3. In the Station

Parameters group, deactivate the check box “Do not activate as only master”.

13:4343An update is presently not possible. In one or more STEP 7 applications at least one GSE file or type file is being referenced.In the different S7 applications there are objects (stations) open in which DP slaves are used. Thus it is no longer possible to install new GSD or type files, or even to update them.Please close the station window in the hardware configuration and all other STEP7 applications (such as NETPRO, for example) that could access the GSD file . The Hardware Configuration application remains open however without content. Then you can install the GSD file.
13:4341The GSE file (type file) %1 contains syntax errors. For this reason it cannot be interpreted.STEP7 V5 + SP3 does a strict check of the GSD files. Some are not accepted, e.g. when the name is longer than 23 charactersCreate a backup copy of the GSD files; open file (e.g. with Wordpad) and edit excerpt from the file Vendor_Name = “1234567890123456789012345678901234567890Machine Factory”. The

name is longer than the max. 23 characters permitted. Correct to: Vendor_Name = ” xxxxx Machine Factory”. Save the file and re-incorporate it.

13:4366Error during complete restart of the module.An error has occurred when attempting to start the module (restart). Possibly not all the CPUs of the multicomputing station have been started.Start the module or all the modules of the multicomputing station from the SIMATIC Manager via PLC and Operating Status.
An error has occurred when attempting to start the module (restart).

The key switch of the CPU/FM is in the STOP position

Set the key switch of the CPU/FM to RUN or RUN-P.
An error has occurred when attempting to start the module (restart). The

operating mode switch of the CP is in the STOP position

Set the operating mode switch of the CP to RUN.



Error number:Text:Cause:Remedy:
13:4589Details: (D221); cannot load SDB 7XX”.H connections are configured in your project. The configuration of high- availability S7 connections has changed in STEP 7 V5.1. There are individual old configurations whose system data after a change can no longer be assigned to the latest configured high-availability S7 connections. This then leads to abortion of the download.In the SIMATIC Manager delete the “System Data” folder in “CPU > S7 program > Blocks”. Then regenerate the system data in “NetPro”.
15:20533The maximal length of debug info (max. 64 Kbyte) is reached.The maximal length of debug info of 64 Kbyte is dependent of the system and can not be added.The debug info will be increased very fast if there is a lot of accesses to data blocks. We recommend in refer to the debug info to reduce the access of only few data blocks.
16:5016Parameter can not be controlledYou are trying to control an operand whose address is outside the

permitted range of the controlling CPU.

Comment out the relevant line in the VAT.
You are trying to control an operand outside the process image for which

there is no module available.

It is possible to control of the operand inside the process image even if no

module is slotted for the operand.

The data block (DB) that is to be controlled is not in the CPU to be

controlled. The data block (DB) is write-protected.

Load the DB into the relevant CPU.
The data block (DB) is write-protected.You have no write access to this DB. You must disable the READ-ONLY

attribute for this DB to have write access to it.

You are trying to control a periphery input (PI).Direct write access to an input module is not permitted.
With the function “Release PQ” you can only control peripheral outputs


Direct write access to an input module is not permitted.
16:5053In “Process Mode” it is not permitted to control or monitor I/Os.Consider whether you achieve the desired result by monitoring the process image. Otherwise parameterize the CPU for Test Mode (Configure Hardware

/ “CPU Properties” dialog box / “Protection” tab).

30:13The interface of a called block has been changed. This means that the parameters are not transferred properly to the changed block. The block call is expanded and then displayed marked as faulty.STEP 7 up to V4.02.x:

In the case of expanded block calls you delete the complete call sequence (all statements between the limiting PICTURE commands, including the red CALL / END_CALL lines) and then re-enter the CALL.

STEP 7 V5.x and higher:

In the case of incorrectly marked block calls you position the cursor in the CALL line and select the menu Edit>Block Call>Update. This adapts the block call to the new interface. Then check the new assignment of parameters.

30:15The type object has a different time stamp to the opened block. The local symbols are displayed as pseudosymbols.Blocks have been opened either by available users or the blocks have been copied with the SIMATIC Manager from the CPU into the OFFLINE database. However, since the CPU knows no symbols, the variable names are replaced by default names.



Error number:Text:Cause:Remedy:
30:50Error while generating the STL source.The STL source cannot be generated, e.g. because it exists already and is write-protected, or because there is no more memory available on the drive.Generate a source with a new name or make sure that there is enough memory available for the source to be generated.
30:484The displayed block cannot be monitored because it does not match the block in the CPU.

Do you want to download the displayed block to the CPU and then monitor it?

This is found to be caused by a discrepancy in the time stamps between the online block and the offline block and means that the blocks are different. Since the online information relating to the block sequence cannot be assigned to the individual program elements of the offline block, the block status cannot be displayed.The programs which are generated with CFC must be downloaded from the CFC to the PLC because only this loading function guarantees that the configuration data will be consistent with the PLC data. The same loading function is also used if you compile and load the “PLC > Objects” menu command in the SIMATIC Manager or highlight the chart folder and select the “PLC > Load” function. You may not, however, highlight the block folder or individual blocks and PLC > Load, as well as copy the blocks in the “Block folder offline” in order to insert them into the “Block folder online”.
30:504There are no parameter and local variable names available because there is a time stamp conflict between the interface of the block and the description of the parameter and local variable names.The description of the parameter and local variable names has a different time stamp to the interface of the opened block. This is why the parameters and local variables are displayed as pseudosymbols without comments.This conflict first arises when you open a block and interface changes made online have not been stored in the S7 user program offline and now the online block is being opened.

Interface changes made offline have not been loaded into the CPU and now the online block is being opened.

The interface of a function block or UDT has been changed and now the associated instance data block or the data block derived from the UDT is being opened.

An online block that already has a time stamp conflict is copied offline into the S7 user program and now the offline block is being opened.

The cause for this can be an actual hardware fault, or an interrupt conflict with another module.In this case the customer can check whether the MPI LED lights on the CP5611 during this time.

–  If the LED does not light, the module could be defective or there is an address conflict on the PCI bus (though unlikely).

–  If the LED lights, then there is an interrupt conflict.

–  NT Diagnostics ->Resources.

–  Warning: with some modules you have to switch the computer off/on after BIOS changes.

A possible remedy could also be to plug the CP5611 into a different PCI slot.

30:53Problems occurred during the automatic generation of STL sources. See Details!There are protected blocks in the selection list of the STL source to be generated.Remake the selection list, but without the protected blocks. Press the Details button in the error message to obtain a Detailed List of the protected blocks.



Error number:Text:Cause:Remedy:
30:202The test that “strikes” should check whether the block is there online and


Save the project under a different name.
30:473This operation is not possible in this position.Programming error.Correct the code.
30:503The type object of the block is not available, so the variable description is

missing. The local symbols are displayed as pseudosymbols.

User error.
The block is available online in the automation system, but not offline in

the S7 user program.

The block has been copied from the automation system into an S7 user program and now this S7 user program is to be opened where it did not exist before.
A block is opened via “Available Users”. In this case there is no S7 user

program linked with the automation system.

The associated function block of an instance data block to be opened

does not exist.

32:282PG Resourcen Error, by program status of a longer FB in PLCSIMIn Step7 V5.0 SP2 with PLCSIM V4.0 under NT, project and block were opened online. This probably led to high internal use of resources.In Step7 V5.0 SP2 with PLCSIM V4.0 do not open the project online, but select the status function from the offline project. Setting the virtual memory to 256MB does not help
33:384The triggered action cannot be executed at this time. Check all other STEP 7 applications and exit them where necessary.The communications module is probably already being operated with other settings (e.g. with a different transmission rate).Please check the baud rate on the PG/PC via “Set PG/PC interface” and the baud rate of the CPU configured.
There might be other online functions active.Close any other active online functions (e.g. by closing the relevant

windows) and try again.

Attempt to run the firmware update of a CPU directly via STEP 7 on a


Firmware update is only possible via flash card.
33:496The called function is not available in S7-DOS or in

the CPU.

Deinstallation and reinstallation of STEP7
33:498Internal error: Function ‘%1’ not implemented.Delete metafiles
33:501System error!Attempt to get online as normal user under WinNT.
33:511System error!Mixed installationManual deinstallation of STEP 7 and S7 options packages
NT: insufficient access rights.You must have at least main user access rights!
NT: main user access rights already assigned!Check that the domain user with the main user rights has also been

transferred into the Main User group on the local computer.

EPROM: Memory card is missing



Error number:Text:Cause:Remedy:
The CP 1413 occupies the memory area 000D 0000 to 000D FFFF (complete D segment) or 000E 0000 to 000E FFFF (complete E segment). Normally MPI boards also use address areas in the D segment (from 000D C000) meaning they interfere with communication with the CP 1413.Can occur if the new connection to the database is not set up; for example when closing and opening available users, S7db_close and open is executed. Sometimes these do not match the current connection.With laptops, disable the power-save mode. Under WinNT check the user rights (only with Administrator rights in V3.x).
Bus monitor Amprolyzer has been installed.Manual deinstallation of STEP 7 and S7 options packages according to


30:527The interface of the multi instance call can only be updated, if the declaration of the multi instance is valid in the tag declaration table.If you click “Yes” in the dialog box, the system corrects the corresponding entry in the detailed variable view for you.In case it is impossible to acknowledge the dialog box with “Yes” and, hence to have the corresponding entry corrected by the system in the tag detail view, verify the system date of your PC. The system date of your PC has to be set to the current date.
If you want to carry out the necessery changes yourself, proceed as follows:

1.  Click “No” in the dialog box.

2.  Eliminate the invalid multiple instance declaration by highlighting the relevant line in the detailed variable view and selecting the pop-up context menu command “Update Declarations”.

3.  Position the cursor on the block call in the code section and repeat the function.

33:3100When you have set the option “PG/PC is the only master on the bus” in the dialog by “Set PG/PC Interface” and you will make an online connection by “Display Accessible Notes” to the CP5412 A2, so you will receive this error number if not a partner is connected on this modul.
33:8242The EPROM driver cannot support the set programming interface on this computerPC + external prommer. Cause of error not yet known: probably a setup problem where the Registry entries are not checked.Under HKEY_LOCAL_MACHINE\SOFTWARE\SIEMENS\SINEC\LOGDEVICES

there exist the directories MCDCENT and MCDPG. Where this is the case, when using an external prommer, you must delete the MCDPG directory. When using an internal prommer, you must remove the MCDCENT directory.

Same message with a PG 720/740/760Bad installation of STEP 7



Error number:Text:Cause:Remedy:
33:8256The external prommer is not connected to the corresponding port or the power supply has been interrupted.The external prommer is not connected to the configured LPT interface.Connect the external prommer to the configured LPT.
The power supply of the external prommer is interrupted.Reestablish the prommer’s power supply.
LPT on PC faulty.
LPT incorrectly set.The LPT port must be set to EPP in the BIOS.
33:16399System error by S7OTBL Server Client-


When this message appears, the S7DOS server (S7otblsx.exe or

S7otbxsx.exe) doesn’t want to start.

The files S7otblsx.exe and/or S7otbxsx.exe are not available.
This server is a relatively conventional Exe that receives data from the line as proxy for programs that want to go online. It therefore has nothing to do with databases or OLE/COM – yet.S7otblsx.exe or S7otbxsx.exe are not in the search path? Is the server normally in S7bin or in the system directory? The S7bin directory is registered at Setup as CurrentWorkingDir of the applications. If this doesn’t work, then this message might also be displayed.
What is the purpose of the server. S7DOS recognizes four call types, 3 of which are asynchronous. So that the application can continue to run in the case of asynchronous calls and exported if necessary, there must be a proxy that constantly “listens” to the line and receives any data that arrives. If the PLC sends data directly, only then can you start to store the applications again from the swap-out file.Remainders in the memory after manual closing of the server. The server allocates shared memory. When it starts and finds its memory still allocated, then it discontinues the startup or if it can’t allocated the shared memory.

The first case might occur if you close the server with the Task Manager and then continue without shutting down. The server needs approx. 400 KB shared memory. This should not be a problem nowadays.

The S7DOS-DLL attempts to start the server. If this does not work, then it tries again and again. It has a timeout of 30 seconds in which time the server should be up. If nothing happens during 30seconds – no refresh of the application – then this is a clear indication of an unsuccessful server start.In STEP 7 V5 and higher the server checks whether it has the same version as the DLL. If not, it doesn’t start.
33:16418The monitoring time for a STEP 7 frame was


33:16418Timeout by wait of WM_ENDE_L7.The monitoring time for a STEP 7 telegram has expired.
Faulty parameterization of the access point on the MPI, L2 and H1 card or

on the corresponding bus.

Correct the access point via “Set PG/PC interface” or PG/PC ONLINE card.
There is already a communications load at the moment due to a configured S7 communication and therefore no ONLINE connection is possible.Repeat attempt to set up connection or check the S7 connections in the S7 project.
Cold or warm restart of communications partner.Repeat attempt to set up connection or check the power supply of the

communications partner.



Error number:Text:Cause:Remedy:
33:16642Online: Internal error – wrong configuration of telegram.Occurs when TeleService is in operation. Error image: a TeleService connection is set up between a US-Robotics Sportster Voice 33.6 fax modem (local; analog, external) and an M1 GSM module (system side). With this constellation an online connection is set up in TeleService, the available users are displayed, but if you double-click on, for example, MPI=2 (direct), you get this error message. When you close this error message, the block container is displayed and the remote connection to the system is disconnected (295:20493).
Error described above also occurs with a connection between US- Robotics Sportster Voice 33.6 fax modem (local; analog, external) and the Penril Data Link 19.2 modem (system side, analog, external).
33:16647The online connection was interrupted.
33:16654Online: The connection was broken. Check the online connection and select the instance data block again.HW connection interrupted.Check the connecting cables and for correct connection to the network.
CPU has no power supply.

Power supply failure.

Reestablish the power supply.

Group error LED (SF) lights.

Locate problem by replacing modules. One possible cause could be that the

bus is unstable or the interface on the module is defective.

Interface is already occupied by another PG connection.Check whether a remote connection is set up.
Power-save Management is active in the computer.Go online again and set up a new connection.

If the behavior occurs again after a short time, then deactivate the Power- save Management.

Warning: in some computers this can only be done via the BIOS SETUP.

33:16656The error occurs frequently if a station address is set which differs from the actual network configurationThe error occurs frequently if an MPI address is set, which deviates from the actual network configuration. The error can occur in particular with the following operations:Check the connecting cables and for correct connection of the network.
A block has been copied from an S7 program that is directly under a project and inserted in the block container of an S7 program that is under a module.Check the PLC for power failure.



Error number:Text:Cause:Remedy:
For setting up the online connection it is no longer the MPI address in the Properties of the S7 program that is valid, but the configured MPI address of the module.Check whether when configuring the hardware that an MPI address has been configured for the module and stored offline, under which no user exists as yet. In this case open the window for configuring the hardware. Then either adapt the MPI address in the module (by loading the configuration (see HW Config) with the changed MPI address) or change the MPI address configured offline to an existing address and save the change offline.
A block has been opened in the “Available Users” window and then an

attempt was made to save the block in a project.

Check whether the configured MPI address in the project actually

corresponds to the loaded MPI configuration of the MPI network.

For setting up the online connection it is no longer the MPI address from the “Available Users” window that is valid, but the MPI address configured in the project.Check whether the MPI address is available in the MPI network.
In the “Available Users” window a user has been marked and the “Monitor and control variable” function called. Then an attempt was made to save the variable, which is only possible offline in a project.Check the “Group error message” (SF) LED of the module (CPU).
For setting up the online connection it is no longer the MPI address from the “Available Users” window that is valid, but the MPI address configured in the project.Check the configuration in the SIMATIC Manager and the network addresses set. (Network addresses must not be assigned twice.)
Reset the CPU and CP, then reload the configuration and under NCM read out the address so that you can access the S7 controller online with the CP 1413.
The block container of a CPU with several DP interfaces cannot be opened over the DP interface in the online view. This online view is however possible over the MPI/DP interface. A online connection can be built up with the function “Available station” via the DP-interface of the CPU.1.  Check the settings in the SIMATIC Manager: By clicking on “Extras > Settings > Register: View” the option “Enable MPI address to be modified” should be active.

2.  Switch in the Simatic manager to online view and mark with the cursor the S7 program. Right-click, load the object properties and choose the register “Addresses: Module”. Select the correct PROFIBUS address, with which the PG is connected via the DP-interface of the CPU.

3.  We recommend to notify STEP 7 of the location change of the PGs, if you have disconnected and reconnect the PC from the subnet to an other with your networked STEP 7 project. This can be executed under “Targetsystem > Assign PG/PC”.



Error number:Text:Cause:Remedy:
33:16662Online: No connection. Node does not accept the connection setup. Check the online connection and select the instance data block again.The partner is neither a CPU nor a CP.Check that the configuration and the actual hardware configuration match.
The partner is not a module in the PLC.Check the addresses given.
The partner is a different PG or an external device.Using the “Module Status” function check whether the selected partner is a CPU. Check whether its communications partner is slotted in the place configured (rack/slot).
The partner cannot set up any more connections.Close any further connections to the partner.
Connection setup via DP interface without the CPU retaining it’s relevant


First configure the CPU also as DP master and load the SDBs onto the


33:16914Online: Station not online.Power supply of the S7 is switched off.Check whether the CPU is switched on.
Connecting cable is not plugged in or is defective.Check that the MPI cable is plugged in.

Check the cable for breaks.

Configured bus parameters do not match the S7 system.Check the following bus parameters: Baud Rate, Highest User Address (these parameters must be set correctly on all stations in the network) and Timeout.
In the Control Panel call “Set PG/PC interface” to correct the bus


Restart MS-Windows and check the error messages of the drivers.
Incorrect access point is selected.Select correct access point.
PG: hardware faultSend PG to PG service shop to have the interface checked.
33:16917The function is not supported by the selected hardware.Occurs if you set up an ONLINE connection via a CP5412 A2 with the option “PC is the only master” (in the “Set PG/PC interface” tool) via “Available Users” and there is no user connected to the CP 5412 A2.Incorrect message, the connection is set up as soon as a user is connected.
33:16944Online: It is not found an active contact.User not connected to the bus.Check the connecting cables and the connection to the network. Check the

PLC for power failure.

On the PC/TS adapter the LED for correct power supply lights. This LED lights if only the 24V supply is connect and the 5V supply is missing. The PC/TS adapter however needs the 24V and the 5V power supply through the PLC.Check the connection and whether the 24V and 5V power supplies reach the PC/TS adapter.
The TS adapter is set to the wrong transmission rate on the MPI side.Correct the network transmission rate under Set PG/PC interface -> MPI.
The PC/TS adapter hardware is damaged.Replace the TS adapter or send it in for repair.
The wrong driver is preset under “Set PG/PC interface”.Preset the correct driver for the TS adapter.



Error number:Text:Cause:Remedy:
33:17072Online: no hardware is found.No driver selected or incorrect address area of the MPI interfacePG/PC interface – MPI Properties

->Select or add driver

With Windows NT, check that the PC has an MPI-ISA card and not a


Can be determined in the BIOS (PCI).
33:17074ONLINE: driver is wrong configured or not valid parameter in the registryMPI-ISA card:

STEP7 version (also upgrade and corrections)

-Win95 hardware recognition has been run

-other drivers (also CP…) tried out

-another card installed in the PG/PC

-sometimes hardware is defective

installation of anPG/PC interface – MPI Properties

->Delete all unnecessary drivers

->Re-insert and parameterize drivers

33:17075All stations on this subnet must have the same value for the transmission rate. The interrupt may not be assigned for other hardware components. The MPI addresses in the network must be unique, meaning each address may only be assigned once. The local Station address must also not be greater than the highest station address in the programmable controller.With this message there is usually an interrupt that is double-occupied.Attempt to set a different interrupt once.
Occurs with SCENIC PRO M6, Onboard Controller occupies many IRQsDeactivate primary and secondary controllers in the BIOS.
WIN 95 does not clearly recognize the interrupt occupied through the 3Com-Etherlink 3 (ISA) 3c0509b. This can lead to interrupt sources being double-occupied.Select a different interrupt for MPI card.
The reason for this can be an actual fault in the hardware, or an interrupt conflict with another module.In this case the customer can check whether the MPI LED on the CP5611 lights during this time.

-If the LED does not light, the module might be defective or there is an address conflict on the PCI bus (not very likely).

-If the LED lights, then there is an interrupt conflict.

-NT diagnostics ->Resources.

-Warning: with some modules it is necessary to switch the computer off/on after BIOS changes

Under circumstances, one remedy is to plug the CP5611 into a different PCI slot.



Error number:Text:Cause:Remedy:
33:17077Online: The setting local address of participant is assignedThe TS adapter had the same MPI address (0) as another user in the MPI network.Via the “Parameterize Adapter” function, assign to the TS adapter an MPI address that has not yet been assigned and save it. The TS adapter has MPI address 0 as works default setting.
33:17088Online: The selected communication driver can not

be loaded. File is not found.

In V2.1 the PG/PC interface hardware is set to “none”Select card
Possibly wrong or no driver selected with Windows NT.Install driver or select card.
33:17090Logical device is not in the registry.
The LogDev is in the Registry under the following key: HKEY_LOCAL_MACHINE\SOFTWARE\SIEMENS\SINEC\LogName\S7O


This sequence of drivers should be of one mold, i.e. from the same generation.

A mixture of drivers from different STEP7 releases is fatal!

No, that would be too simple.

As usual for such a communication, each layer is implemented as an application layer. There is therefore at least one driver for Layer 7 (s7otbldx,s7otblsx), one for Layer 4 (s7otransx) and one for Layer 2 (s7ospc2). The drivers for Layer 2 still run in the Ring 0 of Windows, the remaining drivers in the Ring 3. There is also a central program that manages the transition from Ring 3 to Ring 0 including the transferring data to and fro (s7onlinx).

With the CP 5611: driver warped in the Registry.Deinstall and then reinstall under “Set PG/PC interface”.
“PG/PC is the only master on the bus” is not activated (not checked)

although the PG/PC is the only master.

Active “PG/PC is the only master on the bus”.
33:17104The version of the adapter connected does not support the bus parameters set or it is not connected to the adapter type assigned to it in the program “Setting the PG/PC Interface”.Probably the versions of the drivers and the PC Adapter or PC/MPI card are incompatible.Check in the PG/PC interface whether a TS adapter is addressed with the PC Adapter driver. Also check the settings of your PG and the PC Adapter (Informations you will find in the FAQ !10420976!).
33:17106Communication to the PC/TS adapter is faulty.The PC/MPI cable is plugged into a module that provides no power


Connect external power supply.
The connection between PC adapter and CPU is defective.Check hardware. Warning: PC adapter needs direct connection to the CPU

since no external power supply is possible.

Connection between PC adapter and PC is defective.Check connector pin assignments.
The TS adapter is not yet set under “Set PG/PC interface”.Enter the TS adapter correctly under Step7 Options –> Set PG/PC interface. Also pay attention to the properties Direct Connection/Modem Connection.



Error number:Text:Cause:Remedy:
33:17108Exit the application which is currently using the required port (COM port or USB)Another application already occupies the serial interface or faulty setting of COM-IF upon display under NT.With NT check in the Control Panel that STANDARD is not set for Addresses and INT in the settings of the COM interfaces under “Advanced”. If not, remove COM IF and then restart the PC. Now COM IF should be newly installed with the STANDARD option.
33:17109The driver for the required port is currently being used by another application. Another interface parameter assignment configuration may also be in use.The item Direct Connection has been selected in the SIMATIC Manager under Options –> Set PG/PC interface.Select the item Modem Connection under Options –> Set PG/PC interface.
After interruption of a TS connection the serial driver is still reserved by


Close TeleService and STEP 7, then restart STEP 7 first followed by


33:17110The interface TS adapter is set for a modem connection and there is no remote connection to a TS adapter.After dialing into a remote system via TeleService (connection is set up), the TeleService window was minimized and PLC –> Display Available Users was selected and then this error message was displayed. The reason is probably a bad telephone line or a connection that is too slow.Acknowledge error message with OK and simply reselect PLC –> Display Available Users. The error should then no longer appear and the available users are displayed as long as the modem connection is still set up.
33:33285It is a copied object variant available.Please set up the connection by closing all the S7 applications and then

restarting them.

33:33540Message from the module. Too few resources


Message from the PLC when reading block when, for example, two

upload processes are triggered simultaneously by 2 PG.

Start Trace (Level=0x11000000)
33:33794Illegal request of serviceThe CFB in the communications partner is in the wrong state.Check the block call in the user program of the communications partner.
PRINT block: Paper out.Check the printer when printing via the module.
The program instance in the communications partner is in the wrong state

(cf. START, STOP, RESUME block).

Set the key switch to RUN or RUN-P before starting the module.
When implementing a CPU with DP interfacing, you might get the following situation: a user is not available on the DP bus, the CPU remains about 30 seconds in startup and the RUN LED blinks. Then the CPU goes into RUN (as long as no I/O access to the missing I/Os puts the CPU into STOP). This is obviously a TIMEOUT effect, because the CPU doesn’t acknowledge the service in the relevant time.Download the SDBs and restart manually.
33:34562The service requested is not supported by the module.The service requested is not supported by the module.Note the restrictions of the CPU used (menu command PLC > Module status, Performance Data tab or look up the performance data in the documentation for the module used).

Use a more powerful module.

The object addressed does not exist on the module.Check the addressing of the object.



Error number:Text:Cause:Remedy:
33:42418Message comes when executing the function RAM TO ROM:

not supported by the module.


The service requested is

The module on which you wish to execute this function does not yet support this function. Note the restrictions of the CPU used (menu command PLC > Module status, Performance Data tab or look up the performance data in the documentation for the module used).

Use a more powerful module.

The addressed object does not exist on the module.Check the addressing of the object.
33:53315D043: Data Error: The references order is not available.When controlling by monitoring variables, it might happen that when too many control jobs are sent to the CPU, the CPU rejects them because its buffer is too full.Acknowledge the message and reduce the frequency of the control jobs.
33:53346Resources error (D062), job list is too fullThe variable table (VAT) can no longer be opened although the table could be opened previously without any problems using the same program and with the same CPU. Probably the VAT concerned has not be closed correctly in the CPU.Please switch off the power supply of your CPU and then on again. Delete jobs no longer required (for example, deleting breakpoints, terminating the function “Monitoring/Modifying Variables”, terminating the function “Program Status”). You will then be able to go online again with the VAT.
33:53347(D063) Resources error: the trigger event is occupied.It is no longer possible to monitor a block. This behavior is triggered by irregular termination of the process in the operating system.1.  Unplug the online cable of the CPU and wait at least 1 minute. It is not enough to unplug the CPU just briefly.

2.  Shut down your programming device and wait 1 minute before switching it on again. A simple reboot is not always sufficient.

Message from the module. This function cannot be executed at the moment, because the resource required is already occupied. There are also too many test functions activated at the same time and the resources available on the module are exhausted.Delete the jobs that you no longer need (e.g. delete stop points, close the “Monitor/control variables” function, close the “Program Status” function).
33:53772Note the restrictions of the module being used.Message from a module.Note the restrictions of the module implemented. (See also in the Message

from Modules area.)

33:53790The module to be assigned parameters is currently busy assigning parameters to subordinate devices. It was been by the modules: 416-2DP + CP443-5 ExtendedRemedy: reset the CP via Online HW Config and Download HW Config. Repeat the module download when all stations and field devices on the bus are started up and in operation. To ensure that the module to be downloaded temporarily cannot assign parameters to subordinate devices, remove the interconnecting bus cable from the DP interface for the duration of the downloading process.
In the case of an IM 467, you must do a POWER OFF/ON. This resets the

IM and the HW Configuration can now be downloaded.



Error number:Text:Cause:Remedy:
33:53797The distributed I/O system data block is structured


A diagnostics address outside the address area has been specified. (For

example, Win AC lite was installed.)

Change the diagnostics address.
33:53798A mismatched CPU type or an internal structural error has been detected during block analysis.When evaluating the blocks, an incompatible CPU type or internal structure error was detected.Please check whether the type (MLFB) of the CPU that you have configured matches the CPU type onto which you are loading.

Match the CPU types and reload.

If this is not the case, nevertheless regenerate the configuration data (blocks) and load the data onto the CPU. Please check that you are using the latest version of the configuration software (with the latest Service Pack).

33:53824D204: The rules of coordinations were broken.When attempting to load the system data, there was still a variable table

open online.

Close the variable table and retransfer the system data.
33:59906The communication software (S7DOS) and the interface module (CP) have not the same protocol.The customer has a STEP 7 V5+SP1 + new PDM and a CP 443-5 Ext > V2.7. The new protocol RPC 7 that is used for data record routing between the CP and S7DOS. Unfortunately versions up to version V2.7 of the CP do not have this function.Upgrade CP 443-5 to a version >V2.7.
The user is implementing the right components STEP 7 V5 + SP2 + PDM,

but has a CP that does not include the DSGW.

Check the configuration and replace the CP implemented with a different CP

that includes this function.

34:11Compiler information: handle not valid.When monitoring an empty network with the LAD/FBD/STL editor.Delete empty network.
34:21Compiler information: element not found.The element could not be found in the referenced database.Check the spelling of your search key and your database reference.
34:38Compiler information: Compiler error
34:39You have attempted to rename a variable, but the name is already being


34:152Reference data could not be generated.Error in the database.The project can be correct+D191ed with “Save As with reorganization”.
34:168The moduls in the comand structure are protected and can not be generated.One or more direct or indirect reference module is know how protected and can not be generatedPlease deactivate the option “Include reference blocks” in the menue “Generate source …”. You have to create the list of the moduls via manual without the protected moduls.
34:173At least one symbol assignment has changedIf you copy a symbolically addressed block from the library of an S7 project into another project and after you open the block.

In the original project you generate an STL source from the block.

1.  Please make sure that the source is generated with the setting “absolute”.

2.  Copy the source into the new project; the project can be configured as symbolically addressed.

3.  Now compile the source and so generate the block.

After that you can adapt the symbols as required without the behavior described above occurring.