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kiran_s
@kiran_s
Trusted Member
Joined: Feb 18, 2025
Last seen: Sep 22, 2026
Topics: 7 / Replies: 41
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2 weeks ago
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RE: TON preset for a 30 day filter timer overflows, what do people use instead

Same ceiling on the Siemens side, in case anyone reads this later. The IEC TIME type is a 32 bit signed value in milliseconds, so TON tops out at T#24...

2 weeks ago
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RE: STEP 7 V5.5 says object not found with 256:31 and I cannot find that number anywhere

That was it. The offline database had lost its address assignments against the hardware, almost certainly from the Save As the colleague did, and HW C...

2 weeks ago
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RE: Told to back up every PLC on site, three brands of rack and no list anywhere

6ES7 315-2EH14 is a S7-315-2 PN/DP, so that one is a 300 series. Important part for you: a 300 does not open in TIA Portal without the STEP 7 V5.x opt...

2 weeks ago
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RE: S7-1200 retain values survive a power cycle but go back to 0 after a download

Greyed out because you changed the structure, that one is expected. For an optimised DB you take a snapshot of the monitor values first, then load wit...

2 weeks ago
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RE: S7-1200 retain values survive a power cycle but go back to 0 after a download

You're right, it is not a backup problem. A 1200 has no battery at all, the retentive area lives in non volatile memory on the CPU, and it holds throu...

2 weeks ago
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RE: Laying tags out on a 1756-L83E now so a per station shift report is possible later

Fair enough, I guess the name member answers my objection. I would still keep it as one array rather than six separate sets, the maintenance is much t...

2 weeks ago
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RE: Laying tags out on a 1756-L83E now so a per station shift report is possible later

On our side we would put all six stations in one DB as an array and let the report take them by index, station 1 is index 0 and so on. Far less to mai...

2 weeks ago
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RE: S7-1200 slot 3 SM 1223 faults after a download, rest of the rack runs

You're right, they don't match. The card on the rail is 6ES7 223-1BL32-0XB0, DI16 DQ16, and the project on the server has 6ES7 223 1BH32 in slot 3, th...

2 weeks ago
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RE: S7-1200 slot 3 SM 1223 faults after a download, rest of the rack runs

Moved it to the end and changed the position in the device view to match, then loaded. Fault follows the card, so it is not the clip and not that posi...

3 weeks ago
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RE: STEP 7 V5.5 says object not found with 256:31 and I cannot find that number anywhere

Already did that on Friday, and again this morning with everyone else out of the project. Copied the whole folder to C: on my own machine, opened it t...

3 weeks ago
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RE: S7-1200 slot 3 SM 1223 faults after a download, rest of the rack runs

Spare went in this afternoon, straight out of the panel builder's box. Same flashing ERROR, same slot 3 faulted, and I loaded the hardware again after...

3 weeks ago
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RE: STEP 7 V5.5 says object not found with 256:31 and I cannot find that number anywhere

Opening HW Config from the Manager, double click on Hardware. It never gets as far as drawing the rack. The number is only in the corner, the title ba...

3 weeks ago
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