Delta MS300 Series User Manual page 519

Chapter 13 Warning CodesMS300
ID No. Display on LCD Keypad
52
Action Condition
Action Time
Warning Setting Parameter
Reset Method
Reset Condition
Record
Cause
During PLC operation, the external
Modbus has written/read incorrect
data to internal PLC program
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
Warning Name
Data defect
(PLdA)
Action and Reset
The program detects incorrect written address when translating the program
source code (e.g. the address exceeds the range) during PLC downloading,
then PLdA warning occurs.
Immediately act when the fault is detected
N/A
Check if the program is correct and download the program again. If the fault
does not exist, the warning automatically clears.
N/A
N/A
Check if the upper unit transmits the correct command
Set the station addresses of Modbus and built-in PLC to be different
510
Description
Data error during PLC operation
Corrective Actions