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Siemens / TIA Portal

S7-1200/1500, S7-300/400, WinCC and PROFINET.
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STEP 7 V5.5 says object not found with 256:31 and I cannot find that number anywhere

Last post by hanab, 2 weeks ago

Posts: 8
Views: 26


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

Last post by dieter_k, 2 weeks ago

Posts: 9
Views: 25


S7-300 goes to STOP with SF, diagnostics buffer says OB 121 not loaded

Last post by plctr_editor, 2 weeks ago

Posts: 6
Views: 30


S7-1500 ERROR LED on, diagnostics buffer area length error, CPU still in RUN

Last post by hkraus, 2 weeks ago

Posts: 8
Views: 27


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PID_Compact drives the chiller valve wide open when the tank gets cold, S7-1200

Last post by marekw, 2 weeks ago

Posts: 6
Views: 31


S7-1200 HSC misses pulses from a 2 kHz encoder, counts about half

Last post by hkraus, 2 weeks ago

Posts: 6
Views: 26


PLCSIM Advanced instance running, TIA Go online shows no accessible devices

Last post by pnina, 2 weeks ago

Posts: 6
Views: 42


KEPServerEX reads S7-1200 tags as Bad quality, channel shows connected

Last post by scott_m, 2 weeks ago

Posts: 7
Views: 26


S7-1500 goes to STOP, maximum cycle time exceeded twice, OB 80, after a program change

Last post by hkraus, 2 weeks ago

Posts: 6
Views: 38


SINAMICS G120 on S7-1500 telegram 1, r0052 ready to switch on but never runs

Last post by plctr_mod, 2 weeks ago

Posts: 6
Views: 29


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