Mitsubishi Electric MELSEC L Series Manual page 212

7
POSITIONING MODULE REPLACEMENT
(2) Functions changed from the A1SD75P-S3
When the following functions are used with the A1SD75P-S3, check that there is no problem after the
module is replaced with the LD75P/D.
When the built-in I/O functions of the LCPU are used, refer to the MELSEC-L CPU Module User's
Manual (Built-in I/O Function).
Changed function
1. The software stroke limit check of arc address is carried out only when a sub point is specified.
2. The software stroke limit check during the speed control is carried out in the following:
3. When the current value is changed, an error occurs if the specified address is out of the software stroke
Software stroke limit
function
4. Error code change
Current value changing M 1. An error occurs when the specified new current value is out of the software stroke limit range.
code function 2. The M code set value is enabled during the positioning data current value changing instruction.
1. An error occurs when the command frequency value converted from the speed limit value exceeds the
Acceleration/deceleration
speed control 2. Only two-word type (1 to 8388608ms) can be used as the setting value for the acceleration/deceleration
1. "Peripheral side (emergency) stop" is deleted from the stop causes of Stop group 2 "sudden stop
Stop process and restart
after stop positioning
operation stop 2. "Stop (LD75 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. "CPU module error occurrence" is added to the stop causes of Stop group 2 "Sudden stop selection".
READY signal (X0)
Manual pulse generator
The number of connected manual pulse generators is changed from 1/axis to 1/module.
operation
Axis operation status "Step stopped" is changed to "Stopped" and "Step error occurring" is changed to "Error occurring".
• A1SD75P-S3:
Continuous path control
• LD75P/D:
For the continuous path control, only the near pass function is available.
Near pass
Positioning address pass is not available.
2-axis interpolation
• 2-axis linear interpolation
The interpolation target axis can be voluntarily set with a positioning identifier.
• 2-axis fixed-feed
• Circular interpolation
1. "Step stopped" is changed to "Stopped" and "Step error occurring" is changed to "Error occurring" in the
Step function
2. The restart command (02
3. The step operation is restarted with the restart command.
7
- 8
The check is not carried out when a center point is specified.
- When the software stroke limit is applied to the current feed value with
is updated with
Pr.21
- When the software stroke limit is applied to the machine feed value
limit range. Therefore, the current value is not changed.
A1SD75P-S3:
There are 3 types of errors for each software stroke upper limit and lower limit.
(error code: 509 to 512)
LD75P/D:
Errors for the software stroke upper limit are integrated into one (error code: 507). Errors for the software
stroke lower limit are integrated into one (error code: 508). Error codes 509 to 512 are deleted.
maximum command frequency of the positioning module being used.
time. (Switching between one-word type and two-word type has been stopped.)
selection".
"Test mode fault" in the stop causes of Stop group 3 "sudden stop selection" is changed into the stop
causes of Stop group 2 "sudden stop selection".
OFF
ON
If the reference axis operates in reverse direction, the control is internally changed into the continuous
positioning control (restart after deceleration stop).
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 A1SD75P-S3.)
axis operations status.
) of step start information is deleted.
H
Description
A1SD75P-S3
Normal (READY)
Not READY/WDT error
and the current feed value
Pr.14
LD75P/D
Not READY/WDT error
Normal (READY)