Configuring an ET 200SP F-DI in TIA Portal: 1oo2 Evaluation, Discrepancy and the F-Destination Address

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The station is an IM 155-6 PN with an ET 200SP F-DI 8x24VDC HF in slot 3, the CPU is a 1515F-2 PN on TIA Portal V17, and the hardware compiles clean with a warning that says the F-module has no valid PROFIsafe address yet. The guard door on channel 2 is wired as two … Read more

Passivation and Reintegration on a Siemens F-Module: Why the Channel Stays at Zero After the Fault Clears

plc programming siemens f module passivation reintegration channel stays zero 1 plc

A CPU 1515F-2 PN on TIA Portal V17, an ET 200SP station with an F-DI 8x24VDC HF, and channel 2 on it is a guard door. The buffer showed “Channel 2: Short-circuit” last week and the channel passivated; the electrician found a chafed wire in the door loom and repaired it, the buffer now says … Read more

Safety Network Number and Signature: What Has to Match When You Replace a Safety Module

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The 1791ES-IB8XOBV4 on the palletiser cell failed on a Sunday, the spare from stores has the same catalogue number and the same three address switches set to 21, and the yellow triangle over it in the I/O tree has not moved in forty minutes. The GuardLogix 5580 project has a safety signature, the module’s Safety … Read more

Running an S7-1200 Program in PLCSIM With No Hardware: The Simulated Interface and What Behaves Differently

plc programming s7 1200 plcsim no hardware what behaves differently 1 plc

A project built for a CPU 1214C DC/DC/DC, no CPU in the building until Thursday, and an S7-1200 PLCSIM instance one toolbar button away. Press it, pick PLCSIM in the PG/PC interface dropdown instead of the wired NIC, and the download that would have gone to 192.168.0.1 over the bench cable goes to a powered-up … Read more

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