PLCS7-1200Verified · sol.ls-electric.com
S7-1200 16#7000 — Communication error
Alarm — operational, inspection needed
CAUSE
Why does it occur?
STATUS from open communication blocks such as TSEND/TRCV — connection not established or parameter error.
REMEDY · Step by step
How to fix it?
- Refer to the manual mapping for each STATUS value
- Check connection ID/port/remote IP
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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