Alarm History - Mitsubishi Electric MELSERVO-J5 Series User Manual

Alarm history

Precautions
• If an alarm occurs while the alarm history is being obtained, there may be a mismatch among the alarm numbers, alarm
detail numbers, and alarm occurrence times.
For example, if an alarm occurs after the number of the second last alarm has been read using the command [3] [3] [1] [1], the
alarm history will be updated. In this situation, attempting to read the time of the second last alarm using the command [3] [3]
[2] [1] will obtain the time of a different alarm.
It is recommended that the alarm history is read under conditions where an alarm will not occur, such as during servo-off.
Reading alarm numbers
The numbers of the alarms that occurred in the past can be read. The numbers of the 0th alarm (last alarm) through the 15th
alarm (sixteenth last alarm) can be read.
■Transmission
Transmit the command [3] [3] + data No. [0] [1] to [1] [F].
■Return
The alarm No. corresponding to the data No. can be obtained.
0
Alarm No. (in hexadecimal)
For example, "0032" means [AL. 032] and "00FF" means [AL. _ _ _ ] (no alarm).
Reading alarm detail numbers
Alarm detail numbers can be read in the same manner as alarm numbers.
■Transmission
Transmit the command [3] [3] + data No. [4] [0] to [4] [F].
■Return
The alarm detail number corresponding to the data No. can be obtained.
0 0 0
Alarm detail No. (in hexadecimal)
8 COMMUNICATION FUNCTION (MITSUBISHI ELECTRIC AC SERVO PROTOCOL) [A]
430
8.5 Detailed explanations of commands