WAGO-I/O-SYSTEM 750
Function Description
39
750-636/000-x00 DC Drive Controller 24V/5A
Manual
Version 2.1.0
4.10 Setpoint Change on the Fly
If during an active positioning motion the setpoint position is changed in the
process image, the I/O module should react. If this new setpoint position is in
direction of the motion, the I/O module will attempt to reach this position with an
intermediate stop. The earliest possible time for this evaluation is after the
conclusion of the acceleration or softstart phase. Furthermore, the distance will be
examined for its compliance with the configured approach criteria. If this is not
the case, or the new setpoint position is in an opposite direction, the drive will
stop. If so, the determined brake path for the current direction of motion is not
copied to the corresponding RAM register. If the configured retry counter for the
maximum admissible retries is set to 0, the positioning process is terminated and a
positioning failure is output.In all other cases, the first retry attempt to reach the
new setpoint position will begin.
Example 13:
Figure 22: Example 13
The I/O module detects that it is possible to approach the new setpoint position
and continues the positioning process.
Example 14:
Figure 23: Example 14
In this example, the distance to the new setpoint position is too small for
successful positioning. It is stopped and a further positioning attempt is not made,
because the retry counter is initialized with 0. Example 9 shows the re-positioning
of SP_new.