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Description of Functions
With Reference
It is necessary to connect the reference point switch (RPS) to a digital input
Point Switch (RPS)
and parameterize it in MD34.
Triggering of Move-
Synchronization (R)
9-18
Type of Reference-
ment, Direction for
Point Approach
1st situation
zero reference
mark to right of
RPS
2nd situation
zero reference mark
to left of RPS
R+ ("edge-con-
3rd situation
trolled") or Start
RPS centered
(no zero pulse nec-
essary)
4th situation
RPS edge
(no zero pulse nec-
essary)
1st situation
zero reference mark
to right of RPS
2nd situation
zero reference mark
R– ("edge-con-
to left of RPS
trolled") or Start
trolled") or Start
3rd situation
RPS centered (no
zero pulse
necessary)
4th situation
RPS edge (no zero
pulse necessary)
Sequence of Motions
(Reference Point Offset = 0)
V
– referencing velocity
A
V
– reducing velocity
R
V
A
–
V
V
A
R
–
Zero ref-
erence
mark:
V
A
–
V
A
–
equals R+ 2nd situation
mirrored
equals R+ 1st situation
mirrored
equals R+ 3rd situation
mirrored
equals R+ 4th situation
mirrored
FM 453 Servo Drive / Step Drive Positioning Module
C79000-G7076-C453-01
V
R
+
RPS
Ref. pt.
+
RPS
V
R
+
RPS
V
R
+
RPS
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