Setting The Actual Value (Job 1) - Siemens simatic et 200s Operating Instructions Manual

1PosInc/Digital
3.6 Functions of the 1PosInc/Digital
3.6.10

Setting the Actual Value (JOB 1)

Definition
Setting an actual value assigns new coordinates to the actual value displayed. This moves
the operating range to a different range on the axis and synchronizes the axis.
Provide the control interface with the new actual value coordinates and activate JOB 1.
The 1PosInc/Digital sets the specified actual value coordinates on the actual value displayed
in the feedback interface and sets the feedback bit SYNC = 1.
Effect on the MODEs
MODE
Search for Reference
Inching
Absolute Positioning
Relative Positioning
88
What Happens
Make sure when the reference point run is evaluated that the feedback bit
SYNC = 1 is set immediately.
The reference point run still continues to run.
–
The following responses are possible:
Distance to the destination ≤ switch-off difference.
•
The switch-off point is reached or overshot; positioning is switched off
immediately, and the run is terminated with POS_DONE = 1. In this
case, the destination is sometimes overshot.
Distance to the destination ≤ the switchover difference.
•
The switchover point is reached or overshot; there is an immediate
reduction from rapid feed to creep feed. In this case the distance
covered in creep feed is less than (switchover difference - switch-off
difference).
Distance to the destination > the switchover difference
•
The drive is moved using rapid feed, even if it was switched over to
creep feed beforehand.
The preset distance continues to be traversed.
Operating Instructions, 05/2007, A5E00124871-04
ET 200S Positioning