Delta VP3000 Series - Page 442

Chapter 8 Troubleshooting｜VP3000
433
ID No.
Warning Name
Descriptions
55
Function defect
(PLFF)
Command error during program execution
Action and Reset
Action Condition
PLFF warning occurs when an unresolved command is found during the program
operation
Action Time
Immediately act when the error is detected
Warning Setting Parameter
N/A
Reset Method
Check if the program is correct and re-download the program. If the fault does
not exist, the warning automatically clears.
Reset Condition
No
Record
No
Cause
Corrective Actions
The PLC runs an incorrect
command during operation
Check the PLC program with D1014 and re-download the program
1. If the FOR/NEXT command is written correctly
2. Is MC/ MCR paired
3. If the break command is written correctly
4. If the FOR/NEXT command is written correctly
5. If the break command is written correctly
6. Ensure the used model supports all API codes