Error Code Classification; Error Storage - Mitsubishi Electric RD77MS2 User Manual

Error code classification

Item Error code
Minor errors 1860H to 18BFH
18C0H to 18FFH
1900H to 193FH
1940H to 197FH
1980H to 198FH
1990H to 19EFH
19F0H to 19FFH
1A00H to 1A0FH
1A10H to 1A5FH
1A60H to 1A9FH
1AA0H to 1AFFH
1B00H to 1B3FH
1B40H to 1B9FH
1BA0H to 1BDFH
1BE0H to 1C3FH
1C80H to 1CBFH
Moderate errors 3000H to 30FFH

Error storage

When an error occurs, the error detection signal turns ON, and the error code corresponding to the error details is stored in
"[Md.23] Axis error No.". Note that there is a delay of up to operation cycle after the error detection signal turns ON until the
error code is stored.
When an alarm occurs on servo amplifier, the alarm No. displayed in LED of servo amplifier is stored in "[Md.114] Servo
alarm". Check the error details and remedies with "[Md.114] Servo alarm".
Axis No.
1
2
3
4
5

16
*1 A new error code is stored in "[Md.23] Axis error No." every time an error occurs.
When any error that is independent of an axis is detected, it is stored in the axis error No. of axis 1.
(These errors are stored in the axis error No. of axis 1 for the system which does not use the axis 1.)
For the synchronous encoder axis, "b4: Error detection flag" of "[Md.325] Synchronous encoder axis status" for target axis
turns ON, and the input axis error number is stored in "[Md.326] Synchronous encoder axis error No.".
Classification of errors
Dedicated instruction errors
Inter-module synchronization errors
Positioning control common errors
Home position return errors
JOG, inching and manual pulse generator operation errors
Positioning operation errors
Block start data errors
Condition data errors
Positioning data errors
Basic parameter errors
Detailed parameter errors
Home position return parameter errors
Expansion/Common parameter errors
Synchronous control input axis errors
Synchronous control output axis errors
Errors for servo amplifier, amplifier manufactured by other companies, and head module
Initial process errors
Error detection signal
[Md.31] Status: b13
Error code
*1
[Md.23] Axis error No.
Servo alarm
[Md.114] Servo alarm
14 TROUBLESHOOTING
14.3 Error and Warning Details
14
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