Applicable Systems
AC500
AC590
ACS580
ACS880
Symptoms
AC500 PLC communication fault detected.
Possible Causes
- AC500 communication link failure
- PLC hardware fault
- Communication parameter mismatch
Troubleshooting Steps
- Step 1: Check AC500 communication cable and connector
Cable and connector intact - Step 2: Verify communication parameters
Parameters match between drive and PLC - Step 3: Test AC500 PLC for proper operation
PLC responds to commands
How to Reset
Reset via control panel after communication is restored.
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Source: ABB ACS580 Firmware Manual
Category: PLC & VFD
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