Designating The Positioning Address - Mitsubishi Electric QD70D4 User Manual

9 POSITIONING CONTROL

9.1.3 Designating the positioning address

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The following shows the two methods for commanding the position in control using
positioning data.
Absolute system
Positioning control is carried out to a designated position (absolute address) having
the OP as a reference. This address is regarded as the positioning address. (The
start point can be anywhere.)
Address
Address
100
Address 150
100
A point
Within the stroke limit range
Fig. 9.5 Absolute system positioning control
Incremental system
The position where the machine is currently stopped is regarded as the start point,
and positioning control is carried out for a designated movement amount in a
designated movement direction.
Movement amount
+100
Movement amount +100
Movement
amount -150
Movement amount-100
100
OP
(Reference point)
A point
Within the stroke limit range
Fig. 9.6 Incremental system positioning control
Address
100
150
Address
300
Address 100
Address 150
150
B point
Movement amount
-100
Movement amount
+100
Movement amount+50
150
B point
MELSEC-Q
Start point
End point
300
C point
Start point
End point
300
C point
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