PLCS7-1200Verified · sol.ls-electric.com
S7-1200 16#2943 — I/O access error - write
Trip — immediate stop
CAUSE
Why does it occur?
The CPU failed to write to an output module — suspected module fault or addressing error.
REMEDY · Step by step
How to fix it?
Check the device configuration in TIA Portal, replace the module, then download again.
Do not reset repeatedly before identifying the cause. Repeated resets while ignoring a trip/alarm can cause secondary damage (IGBT failure, motor winding damage, etc.).
SOURCE
Related manual page
Summary based on the official Siemens AG manual. For accurate and complete information, always consult the official manual.
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