PLCS7-1200Verified · sol.ls-electric.com
S7-1200 16#4301 — Cycle time too short
Alarm — operational, inspection needed
CAUSE
Why does it occur?
The main cycle ended abnormally short — possible code jump or incorrect call flow.
REMEDY · Step by step
How to fix it?
Check the main OB call flow and verify jump/return instructions.
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.
Open official manual ↗CALLBACK
Request an expert callback
A 12-year automation/SI engineer responds directly. Reply within 1–3 business days.