Lenze ECSCPxxx - Manual (Page 97)

Commissioning
Basic terms of positioning
Positioning profile parameters
6
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97 EDBCSXP064 EN 8.0
6.1.6 Positioning profile parameters
6.1.6.1 Target position (C3100/x)
The effect of this parameter depends on the type of the positioning carried out. Three basic
types of positioning are differentiated:
ƒ Absolute positioning
– The value "target position" indicates an unequivocal absolute position in the
measuring system.
– The zero position of the measuring system must be known as reference point
(see homing, ^ 101).
– Application: axes with a limited traversing range (e. g. palletizers)
0-Position 10 20 30 40 50 60 70 80 90 100
10
30
80
P1
P2
P3
ECSXA407
Fig. 6−4 Absolute positioning
ƒ Relative positioning in the continuous measuring system
– The "target position" value indicates the distance to be traversed with regard to
the current position (incremental dimension).
– The zero position of the measuring system does not need to be known.
– The state "Home position available" (Stat1.HomePosAvailable is reset).
– Application: roll feed
10 20 50
P3 P2 P1
ECSXA436
Fig. 6−5 Relative positioning in continuous measuring system
ƒ Relative positioning with absolute reference
– The "target position" value indicates the distance to be traversed with regard to
the current position.
– The zero position of the measuring system has to be known.
– Application: incremental positioning for axes with a limited traversing range
0-Position 10 20 30 40 50 60 70 80 90 100
10 20 50
P3 P2 P1
ECSXA408
Fig. 6−6 Relative positioning with absolute reference