Delta MH300 Series - Page 691

Chapter 13 Warning Codes|MH300
13-42
ID No. Display Warning Name Description
52 Data defect (PLdA) Data error during PLC operation
Action and Reset
Action condition
T. The program detects incorrect write-in address when decoding the
program source code and downloading the PLC program (e.g. the
address has exceeded the range), then PLdA warning acts.
Action time Immediately displays when the fault 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 N/A
Record N/A
Cause Corrective Actions
During PLC operation, the
external Modbus has
written/read incorrect data to
internal PLC program
Check if the upper unit transmits the correct command
The built-
in PLC function is ON,
there is station address of
Modbus which is duplicate of
the built-
in PLC station address
(Pr.09-35) been set in the
Modbus system of the
equipment
Set the station addresses of Modbus and built-in PLC to be different