Siemens TIA Portal

S7-1200 and S7-1500 in TIA Portal: tags, timers, data blocks, drive control and the diagnostics buffer when it all goes red.

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

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plc programming et 200sp f di tia portal 1oo2 discrepancy f destination address 1 plc

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

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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

Moving an S7-315 Program onto an S7-1500: What the Migration Converts and What It Hands Back to You

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The two-stage path from a STEP 7 V5.x project to an S7-1500 program, with the CPU 315-2 PN/DP rack and its addresses on one side and the CPU 1515-2 PN with no modules on the other

A CPU 315-2 PN/DP with 6ES7315-2EH14-0AB0 on the label maps to a CPU 1515-2 PN, 6ES7515-2AM01-0AB0, in the Siemens migration guide’s CPU table, and the S7-1500 migration does not happen in one move. It happens in two, the second of which is a right-click on the old CPU in the device view called Migrate to … Read more

Building a Two-Step Sequence in TIA Portal GRAPH: Transitions, Interlocks and the Step That Never Advances

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The two-step sequencer in the sequence view: S1 Fill, T1, S2 Heat expanded to show its action table, interlock network, supervision network and transition T2, and the jump from T2 back to S1; below it the call from OB1 with the standard interface parameters

Step 2 of a two-step TIA Portal GRAPH sequencer on a CPU 1515-2 PN has been active for 4 minutes 12 seconds by its own S2.T, the transition below it has been satisfied for the last 40 of those seconds, and the sequencer is still sitting on step 2. The heater that step 2 drives … Read more

Catching an Intermittent Bit on an S7-1500 with a Trace: Trigger Condition, Sample Rate and Recording Length

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plc programming s7 1500 trace intermittent bit trigger sample rate recording length 1 plc

Zone 3 of the takeaway conveyor stops about once a shift with “Zone3”.Fault latched, the photo-eye on %I4.3 reads a steady 1 in every watch table anybody has opened, and the CPU 1516-3 PN/DP is turning OB1 over in about 6 ms. Whatever is happening is happening inside one of those 6 ms passes, hours … Read more

Uploading a Program from an S7-1500 Nobody Documented: What Comes Back and What Is Gone

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plc programming upload program undocumented s7 1500 what comes back 1 plc

A CPU 1516-3 PN/DP in RUN on the filler, a SIMATIC memory card behind its front flap, and no project file on any laptop in the building. An S7-1500 upload – online, Upload device as new station (hardware and software) – and about three minutes later an empty project holds the rack, every block with … Read more

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

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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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