Setting The Target Position - Mitsubishi MELSEC-F Training Manual

Positioning Control
3.3.2

Setting the target position

In positioning control, the target position can be set by the following two methods.
(Available command units are "mm", "inch", "degree" or "pulse".)
1) Absolute method
In this method, a point (absolute address) is specified for positioning while the zero point is
regarded as the reference. The start point is arbitrary.
Address 100
Address 150
0
Zero point
2) Incremental method
In this method, positioning is performed through specification of the movement direction
and the movement quantity while the current stop position is regarded as the start point.
Movement quantity
Movement quantity +100
0
Zero point
Address 150
100 150
Point A Point B
+100
Movement quantity +100
Movement quantity -150
Movement quantity -100
100 150
Point A Point B
Components of Positioning Control and Their Roles 3
Address
100
Address 300
Address 100
Address 150
300
Point C
Movement quantity
-100
Movement quantity +50
300
Point C
Start point
End point
Start point
End point
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