Chapter 9: Maintenance and Troubleshooting
DL05 Micro PLC Error Codes
1
These errors can be generated by the CPU or by the Handheld Programmer, depending on
the actual error. Appendix B provides a more complete description of the error codes.
2
The errors can be detected at various times. However, most of them are detected at power-up,
on entry to Run Mode, or when a Handheld Programmer key sequence results in an error or
3
an illegal request.
Error Code
4
E003
Software time-out
E004
Invalid instruction(RAM parity error in the CPU)
5
E104
Write failed
E151
Invalid command
E311
Communications error 1
6
E312
Communications error 2
E313
Communications error 3
7
E316
Communications error 6
E320
Time out
E321
Communications error
8
E360
HP Peripheral port time-out
E501
Bad entry
9
E502
Bad address
E503
Bad command
E504
Bad reference / value
0
E505
Invalid instruction
E506
Invalid operation
1
E520
Bad operation – CPU in Run
E521
Bad operation – CPU in Test Run
E523
Bad operation – CPU in Test Program
2
E524
Bad operation – CPU in Program
E525
Mode Switch not in Term position
3
4
B
C
D
9–4
DL05 Micro PLC User Manual, 6th Edition, Rev. A
Description
Error Code
E526
Unit is offline
E527
Unit is online
E528
CPU mode
E540
CPU locked
E541
Wrong password
E542
Password reset
E601
Memory full
E602
Instruction missing
E604
Reference missing
E620
Out of memory
E621
EEPROM Memory not blank
E622
No Handheld Programmer EEPROM
E624
V-memory only
E625
Program only
E627
Bad write operation
E628
Memory type error (should be EEPROM)
E640
Mis-compare
E650
Handheld Programmer system error
E651
Handheld Programmer ROM error
E652
Handheld Programmer RAM error
Description
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