Applicable Systems
WJ200
Symptoms
The WJ200 reports a user program fault. The user-defined program or macro executed an error during operation.
Possible Causes
- User program logic error causing an undefined operation
- User program accessed an invalid parameter or data address
- User program execution exceeded the allowed cycle time
Troubleshooting Steps
- Step 1: Review the user program logic for errors
Logic error is identified and corrected - Step 2: Verify all parameter and data accesses are within valid ranges
All accesses are within valid bounds - Step 3: Optimize the user program to complete within the cycle time
Program executes within the time limit
How to Reset
To reset: Fix the user program error, then reset and restart.
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Source: Hitachi WJ200 Inverter Manual, Hitachi Industrial Equipment
Category: PLC & VFD
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