Method -2: positive search direction
Method -1: negative search direction
Tab. 251 Sequence principle - homing to stop with zero pulse
Situation
Reaction
"Search direction" stop not detected
Homing aborted with fault message.
Zero pulse within one motor revolution not detec-
ted
Homing aborted with fault message.
"Search direction" limit switch detected
Limit switch monitoring is deactivated
"Opposite direction" limit switch detected
Homing aborted with fault message.
Tab. 252 Different sequence scenarios
4.4.3.10
Travel to axis zero-point
Travel to axis zero-point is run after a valid homing.
The requirements for travel to the axis zero-point are:
–
"Activate move to axis zero-point after completion of homing" parameter is activated
–
Reference mark was taken in accordance with the homing method
Sequence:
1. Travel to axis zero-point: axis zero-point is approached at travel velocity.
2. Set axis zero-point: the axis zero-point is set with reference to the reference mark.
3. Report status: "homing status" is set.
Positive axis zero-point offset: positive travel
direction
Negative axis zero-point offset: negative travel
direction
Tab. 253 Sequence principle - travel to axis zero-point
Motion control
274
Festo — CMMT-ST-SW — 2019-02
Содержание CMMT-ST-SW
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