Mitsubishi A1SD75M1, User Manual

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MELSEC-A
5 DATA USED FOR POSITIONING CONTROL
5.6.2 Axis monitor data
Storage item Storage details
Md.29 Current feed value
The currently commanded address is stored. (Different from the actual motor
position during operation)
The current position address is stored.
•
Update timing : 56.8ms
•
The zero point address is stored when the machine zero point return is
completed.
•
When the current value is changed with the current value charge function, the
changed value is stored.
Md.30 Machine feed value
The address of the current position obtained with the machine coordinates is
stored. (Different from the actual motor position during operation)
•
Machine coordinates: Characteristic coordinates determined with machine
•
Update timing: 56.8ms
Md.31 Feedrate
The output speed (average value per 910ms) commanded by the AD75 is stored.
(May be different from the actual motor speed during operation)
•
During interpolation operation, the speed is stored in the following manner.
Reference axis : Composite speed or reference axis speed
(Set with Pr.21 )
Interpolation axis : 0
•
Update timing: 910ms
Md.32 Valid M code
The currently valid M code (set in the positioning data currently operating) is
stored.
•
Update timing : When M code ON signal turns ON
Md.33 Axis error No.
When an axis error is detected, the error code corresponding to the error details is
stored.
•
The latest error code is always stored.
(When a new axis error occurs, the error code is overwritten.)
•
When "axis error reset" (axis control data) turns ON, the axis error No. is
cleared (set to 0).