Mitsubishi Electric Q172CPU Programming Manual page 308

7 MOTION PROGRAMS FOR POSITIONING CONTROL
(3) Positioning control
Positioning control method in the control unit "degree" is shown below.
(a) Absolute data method
Positioning in a near direction to the specified address is performed based
on the current value.
Examples
(1) Positioning is executed in a clockwise direction to travel from the current value
of 315.00000° to 0°.
(2) Positioning is executed in a counter clockwise direction to travel from the
current value of 0° to 315.00000°.
315.00000
315.00000
POINTS
(1) The positioning direction of absolute data method is set a clockwise/counter
clockwise direction by the setting method of stroke limit range, positioning in the
shortest direction may not be possible.
Example
Travel from the current value 0° to 315.00000° must be clockwise positioning if
the lower stroke limit value is set to 0°and the upper stroke limit value is set to
345.00000°.
(2) Set the positioning address within the range of 0° to 360°.
Use the incremental data method for positioning of one revolution or more.
(b) Incremental data method
Positioning by the specified travel value to the specified direction.
The travel direction is set by the sign of the travel value, as follows :
1) Positive travel value ................Clockwise rotation
2) Negative travel value...............Counter clockwise rotation
POINT
Positioning of 360° or more can be executed in the incremental data method.
0
0
0
345.00000
315.00000
7 - 47
0 315.00000
0
315.00000
Clockwise positioning