To 0 (Loop Traverse); Positioning With Enabled Optimization And Too Short Distance; Positioning With Enabled Optimization And Retry Not Equal To 0 (Loop Traverse) - WAGO -I/O-SYSTEM 750 Manual

30 • 750-636 [DC Drive Controller]
Function Description
2.1.1.9.8.2 Positioning with Enabled Optimization and Retry Not Equal to 0
(Loop Traverse)
Example 6:
PU = 0
PD = 0
RT = 4
OZ = 1
OT = 0
Fig. 2.1.1-12: Example 6
Zero (0) initializes the prestop for the Up and Down directions and the actual
position is below the setpoint position. At least 1 repetition is required for
positioning. First, the prestop value for the Up direction must be determined
and the setpoint position must be reached. Furthermore, the braking distance
also initializes the prestop for the Down direction because it is still 0. If this
assignment was not made, this example would require another repetition.
2.1.1.9.8.3

Positioning with Enabled Optimization and too Short Distance

Example 7:
PU = BD
PD = BD
RT = 1
OZ = 1
OT = 0
Fig. 2.1.1-13: Example 7
The prestops for the Up and Down direction are initialized and the actual
position is below the setpoint position. It is now detected that the distance to
the setpoint position is too short to be reached directly. Since the retry is
initialized with 1in order co compensate for overtravel. If retry is initialized
with 0, the setpoint position approach is made immediately even if the result
of this approach may be worse than without driving cycle.
AD
-
IP
BD
-
PD <- BD
HP
AD
-
IP
BD
-
PD <- BD
HP
-
IP
AP = SP
PD
AP SP
PU
+
AP HP = SP
AD AD
+
AP IP SP
PU
+
AP HP = SP
BD
PU <- BD
+
PD <- BD
HP
AD
+
IP
PU <- BD
g063615x
BD
PU <- BD
g063616x
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