Mitsubishi Q Series User Manual

8 - 1 8 - 1
MELSEC-Q
8 TROUBLESHOOTING
8 TROUBLESHOOTING
8.1 Error Code List
The error has the following three types.
• Write data error (
3H, 4H, 5H, 6H)
*1
• AT error completion (001E
H, 002EH, 003EH, 004EH, 005EH)
• Hardware error (001F
H, 002FH, 003FH)
*1 The buffer memory address occurring write data error is displayed at "
" in
hexadecimal.
Example) "0234
H" expresses that data out of the range are written to proportional
band (P) setting (buffer memory address: 35 (23
H)).
The error code of the Q62HLC is stored into the buffer memory address 0.
Display it in hexadecimal for check.
(1) Error code to be stored when multiple errors occur
(a) If higher priority error occurs during occurrence of lower priority error, the
error code of the higher one is overwritten.
[Priority order]
High Hardware error AT error completion Write data error Low
(b) If multiple errors have been detected at hardware error/AT error completion,
the error code of the first occurred error is retained.
(c) In write data error, if higher priority error occurs during occurrence of lower
priority error, the error code of the higher one is overwritten.
[Priority order]
High 6
H
3
H
5
H
4
H
Low
If the last one digits of the error codes are the same, the smallest buffer
memory address among the ones where data were mistakenly written is
stored by priority.
However, if error code is "
6H", the buffer memory address where data
were mistakenly written first is held.
[Example of priority order of error code to be stored]
High 0A46
H 0203H 0403H 0575H 0334H Low
"0A46
H
" is held even when "0346
H
" occurs.
8

Mitsubishi Q Series Specifications

General

Brand	Mitsubishi
Model	Q Series
Category	Control Unit
Language	English