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MELSEC-Q
15 TROUBLESHOOTING
Warning storage
(1) When an axis warning occurs, the warning code corresponding to the warning
details is stored in the following buffer memory (
Md.24
Axis warning No.) for
axis warning No. storage.
Axis No. Buffer memory address
1 807
2 907
3 1007
4 1107
(2) When an axis warning occurs in a positioning operation, etc., "1" is set in bit 9
(b9) of the following buffer memory (
Md.31
Status) for axis status storage.
Axis No. Buffer memory address
1 817
2 917
3 1017
4 1117
[3] Resetting errors and warnings
An error or warning state is canceled after the following processing has been
carried out by setting a "1" in the address [1502 (for axis 1)], [1602 (for axis 2)],
[1702 (for axis 3)], and [1802 (for axis 4)] of the buffer memory for axis error
resetting (
Cd.5
Axis error reset).
•
Axis error detection signal turned OFF
•
"
Md.23
Axis error No." cleared
•
"
Md.24
Axis warning No." cleared
•
Changing of "
Md.26
operation status" from "Error" to "Standby".
•
"
Md.31
Axis warning detection (b9)" turned OFF
[4] Invalid operations
For the following operations, the setting details will be invalidated, and an error or
warning will not occur.
•
Speed change during machine OPR
•
Speed change before operation
(Speed override change, skip command, continuous operation interruption
request, target position change request)
•
Axis stop during axis stop
•
Axis sudden stop during axis stop
•
Axis stop before axis operation
•
Axis sudden stop before axis operation
[5] Confirming the error and warning definitions
The error and warning definitions can be confirmed with the error and warning
codes. Confirming them requires GX Developer or GX Configurator-QP. For
details, refer to GX Developer Operating Manual or GX Configurator-QP
Operating Manual. (Refer to Section 15.2 and Section 15.3 for details of the error
and warning codes.)