Mitsubishi Electric MELSEC-A/QnA Series - Page 246

7 POSITIONING MODULE REPLACEMENT
7 - 9
(2) Changed function from AD75P1-S3/P2-S3/P3-S3
In case of using the following functions with AD75P-S3, make sure that there is no operation problems
when converted to QD75PN/QD75DN.
Changed functions Change description
Software stroke limit
function
1. The limit check of arc address is carried out only when a sub point is designated.
It is not carried out when a center point is designated.
2. The software stroke limit check during speed control is carried out in the following cases:
• When the software stroke limit is applied to the current feed value with and the current feed value is
updated with
• When the software stroke limit is applied to the machine feed value
3. If an attempt is made to change the current value but the designated address is out of the software stroke
limit range, the attempt is considered as an error and the current value is not changed.
4. Error code change
AD75P-S3:
There are 3 types of errors for each upper and lower stroke limit.
(error code 509 to 512)
QD75PN/QD75DN:
Errors for the software stroke upper limit are integrated in to error code 507.
Errors for the lower limit are integrated in to error code 508.
Error codes 509 to 512 are deleted.
Current value changing M
code function
1. An error occurs when the designated new current value is out of the software stroke limit range.
2. The M code setting value is valid during the positioning data current value changing instruction.
Acceleration/deceleration
speed control
1. An error occurs when the command frequency value calculated from the speed limit value exceeds the
maximum command frequency of the positioning module being used.
2. Only two-word type (1 to 8388608ms) can be used as the setting value for the acceleration/deceleration
time.
Stop process and restart
after stop positioning
operation stop
1. "Peripheral side (emergency) stop" is deleted from the stop causes of Stop group 2 "sudden stop
selection".
"Test mode fault" in the stop causes of Stop group 3 "sudden stop selection" is changed to be in the stop
causes of Stop group 2 "sudden stop selection".
2. "Stop (QD75 peripheral)" is added to the stop causes of Stop group 3 "sudden stop selection".
3. Error code 100 (Peripheral device stop during operation) is deleted.
4. "Programmable controller CPU error occurrence" is added to the stop causes of Stop group 2 Sudden stop
selection.
READY signal (X0)
AD75P-S3
QD75PN/QD75DN
OFF Normal (READY)
Not READY/WDT error
ON Not READY/WDT error
Normal (READY)
Manual pulse generator
operation
The No. of connectable manual pulse generator is changed from 1generator/1axis to 1generator/1 module.
Axis operation status "Step stopped" is changed to "Stopped" and "Step error occurring" is changed to "Error occurring".
Continuous path control
• AD75P-S3:
If the reference axis operates in reverse direction, the control is internally changed into the continuous
positioning control. (restart after deceleration stop)
• QD75PN/QD75DN:
Even if the reference axis operates in reverse direction with interpolation, the control remains as the
continuous path control.
(In single-axis operation, the operation is the same as that of the AD75P-S3.)
Near pass
For the continuous path control, only the near pass function is available.
Positioning address pass is not conducted.
2-axis interpolation
• 2-axis linear interpolation
• 2-axis fixed-feed
• Circular interpolation
The interpolation target axis can be randomly set with a positioning identifier.
Pr.14
Pr.21