Mitsubishi Electric MELSEC-L02SCPU User Manual page 124

(b) Range check during operation
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
OPR control
Speed/position switching control
Positioning control
Speed/position switching control
JOG operation
Absolute position restoration
(2) Precautions
• Execute machine OPR beforehand so that the software stroke limit function operates normally.
• Setting the software stroke upper/lower limits prevents a software overrun. To make doubly sure, also
provide emergency stop limit switches near the outer perimeter of the range.
Remark
With the Two axes simultaneous start instruction (IPSIMUL(P)), the current values of the two axes to be started
simultaneously are checked against the stoke limits. If either axis generates an error, only the other axis is started.
122
Machine OPR
Fast OPR
Position control
Speed control
(in speed control)
(in position control)
Current value change
Operation after range check
Check is not performed.
If the Axis 1 current feed value (SD1840,SD1841) may exceed the software
stroke limit by changing the target position, the change is not executed and
the original positioning operation is continued. An error occurs after the
positioning is completed.
Check is not performed.
• If the Axis 1 current feed value (SD1840, SD1841) is outside the range of
software stroke limits upon switching to position control, an error occurs
and the axis decelerates to a stop.
• If the value of "Positioning address/movement amount" is outside the
range of software stroke limits upon switching to position control, an error
occurs and the axis decelerates to a stop.
• If the target position is changed and the Axis 1 current feed value
(SD1840, SD1841) exceeds the software stroke limit as a result, the target
position change is ignored and the control continues based on the original
value of "Positioning address/movement amount." An error occurs after the
positioning is completed.

An error occurs at the moment the Axis 1 current feed value (SD1840,
SD1841) exceeds the software stroke limit, and the axis decelerates to a
stop.
Check is not performed.