Position Setting Range; Current Position Change - Mitsubishi Electric MELSEC iQ-R Series User Manual

Position setting range

Values that can be specified in Position differs depending on whether Relative is FALSE or TRUE. Specify within each of the
following range.
Relative
FALSE
TRUE
Even if a value outside the setting range is set, an error will occur and Position will not be executed when the set position after
a current position change is outside the software stroke limit range.

Current position change

This section describes control details of MC_SetPosition.
Execution when the axis stops
The current position change operation starts at rising edge detection of Execute.
In the current position change, the set position and the cumulative current position are changed to the position specified in
Position.
Position is "Relative position set" when Relative is TRUE, and it is "Absolute position set" when Relative is FALSE.
Ex.
When executing the current position change to 90.0 while the axis stops with the ring counter lower limit value of 0.0, the ring
counter upper limit value of 360.0, and the set position of 180.0 (the cumulative current position of 540.0).
<When Relative is FALSE>
Position
Relative
Execute
Done
Busy
Set position
Cumulative current position
Feed machine position
8 RELEVANT FUNCTIONS to POSITION
276
8.1 Current Position Change Function
Position setting range
Ring counter lower limit value  Setting value < Ring counter upper limit value
-(Ring counter upper limit value - Ring counter lower limit value) / 2  Setting value  (Ring counter upper limit value - Ring
counter lower limit value) /2
90.0
180.0 90.0
540.0 90.0
540.0
<When Relative is TRUE>
Position
Relative
Execute
Done
Busy
Set position
180.0
Cumulative current position 540.0
Feed machine position
90.0
270.0
630.0
540.0