Mitsubishi Electric MELSEC-L02SCPU User Manual page 123

(1) Range check
A software stroke limit range check is executed at the start of operation and also during operation.
(a) Range check at start of operation
The following are checked at start of operation
• Whether operation starts from outside the range of software stroke limits
• Whether operation starts to outside the range of software stroke limits
The software stroke limit range check is processed as follows depending on the applicable control.
In the table, "error" indicates "Software stroke limit +" (Axis 1 error code: 1103) or "Software stroke limit -" (Axis
1 error code: 1104).
Control
Machine OPR
Fast OPR
Standby address
Speed/position switching control
Positioning control (in speed control)
Speed/position switching control
(in position control)
Current value change
JOG operation
Absolute position restoration
*1 If speed/position switching control is started while the external command signal is still on, operation starts under position
control.
Check is not performed.
• If the Axis 1 current feed value (SD1840, SD1841) is outside the range of
software stroke limits, an error occurs and operation does not start.
OP address
• If the OP address is outside the range of software stroke limits, an error
occurs and operation does not start.
• If the Axis 1 current feed value (SD1840, SD1841) is outside the range of
software stroke limits, an error occurs and operation does not start.
• If the standby address is outside the range of software stroke limits, an
error occurs and operation does not start.
• If the Axis 1 current feed value (SD1840, SD1841) is outside the range of
software stroke limits, an error occurs and operation does not start.
Position control • If the value of "Positioning address/movement amount" is outside the
range of software stroke limits, an error occurs and operation does not
start.
Speed control
Check is not performed.
• If the Axis 1 current feed value (SD1840, SD1841) is outside the range of
software stroke limits, an error occurs and operation does not start.
• If the value of "Positioning address/movement amount" is outside the
*1
range of software stroke limits, an error occurs and operation does not
start.
If the new current value is outside the range of software stroke limits, an error
occurs and the current value is not changed.
When the Axis 1 current feed value (SD1840, SD1841) is outside the range
of software stroke limits and:
• If operation is started in the direction of going out of the range of software
stroke limits, an error occurs and operation does not start.
• If operation is started in the direction of going into the range of software
stroke limits, an error does not occur and operation starts.
Check is not performed.
CHAPTER 7 POSITIONING FUNCTION
Operation after range check
7
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