Delta VP3000 Series - Page 439

Chapter 8 Troubleshooting｜VP3000
430
ID No.
Warning Name
Descriptions
52
Data defect
(PLdA)
The read/ write device number or the uploaded command exceed the range, or
other data error occurs during Modbus communication
Action and Reset
Action Condition
When the program detects incorrect read address (for example, the address is
out of the range) during PLC program uploading, the PLdA warning occurs.
Action Time
Immediately act when the error is detected
Warning Setting Parameter
N/A
Reset Method
Check if the program is correct and re-upload the program. If the program does
not detect any problem, the warning automatically clears.
Reset Condition
No
Record
No
Cause
Corrective Actions
During PLC operation, the external
Modbus has written/read incorrect
data to internal PLC program
Check if the used communication address has exceeded the model defined
range and retransmit the communication packet again.