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ines31
@ines31
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Joined: Aug 4, 2025
Last seen: Sep 19, 2026
Topics: 5 / Replies: 26
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RE: S7-1200 ERROR LED flashing after replacing an SM 1223, hardware mismatch slot 2

Shelf labels by description, not number. Found two wrong in our stores.

3 weeks ago
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RE: SISTEMA gives PL c for a Cat 3 door interlock on an S7-1500F, needed PL d

Wired the two NC mirrors in series into F-DI channel 5, FDBACK on the contactor output with a feedback time from the 3RT2 datasheet, new collective si...

3 weeks ago
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RE: SM 1231 current input reads 0 with a 2-wire 4-20mA level transmitter

Wire break diagnostics is a tick box per channel. Off by default.

3 weeks ago
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RE: EtherNet/IP I/O drops 16#0204 about five minutes after every switch reboot

Two shifts, nothing dropped, so I'm closing it. IGMP snooping with no querier on the VLAN, the switch pruned the multicast groups after the 260 s time...

3 weeks ago
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RE: Replaced ET 200SP F-DI 8x24VDC HF, PROFIsafe address error, module stays passivated

Yes. Same as after any channel fault, press the reintegration button the OEM put on the panel, or whatever writes ACK_REI in that safety program. The ...

3 weeks ago
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RE: SISTEMA gives PL c for a Cat 3 door interlock on an S7-1500F, needed PL d

Added the feedback loop in SISTEMA with the DC from the table for direct monitoring. PL d, before touching a wire. Two spare F-DI channels on the stat...

3 weeks ago
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RE: PLCSIM Advanced instance running, TIA Go online shows no accessible devices

Pick the one that matches how you started the instance. You started it on the virtual adapter, so choose "Siemens PLCSIM Virtual Ethernet Adapter" and...

3 weeks ago
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RE: TIA V18 hardware catalog stops at V4.5, new S7-1200 CPU is firmware V4.6

That compile prompt catches me out too. No idea what it rebuilds.

3 weeks ago
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RE: EtherNet/IP I/O drops 16#0204 about five minutes after every switch reboot

IT enabled the querier on VLAN 30 with 10.30.0.2 this morning and rebooted the switch twice to prove it. 40 minutes, nothing dropped. In TIA world thi...

3 weeks ago
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RE: S7-300 stops whenever a PROFIBUS slave drops, OB 86 not loaded

Loaded the four empty OBs last night. Panel dropped again at 06:10 this morning, buffer shows the station failure and the return, CPU stayed in RUN. L...

3 weeks ago
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RE: Replaced ET 200SP F-DI 8x24VDC HF, PROFIsafe address error, module stays passivated

Two things it can be: the F-destination address, or a module firmware the HW config doesn't expect. The buffer says address, so it's the address. The...

3 weeks ago
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RE: SISTEMA gives PL c for a Cat 3 door interlock on an S7-1500F, needed PL d

DC for the output subsystem I set to none, because there is no feedback wired. The contactors just switch. The switch subsystem is at DC99 with the cr...

3 weeks ago
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RE: EtherNet/IP I/O drops 16#0204 about five minutes after every switch reboot

> is there an IGMP querier on that VLAN IT says "the router does that". The VLAN is layer 2 only, no SVI, nothing routes it. The show output says ...

3 weeks ago
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RE: TIA V16 PLCSIM load fails, "simulation is not supported" for a block

Two things it can be, and yours is the first. In the project tree right click the project itself, Properties, Protection, and look for "Support simula...

3 weeks ago
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