Stopping The Stepping Motor - Siemens simatic et 200s Operating Instructions Manual

2.6.5

Stopping the Stepping Motor

How the Stepping Motor Is Stopped
- Caused by
STOP by control bit
External STOP at digital input
Limit switch LIMIT_P reached
Limit switch LIMIT_M reached
STOP at the Reference Cam
Note
Remember that the LIMIT_P and LIMIT_M limit switches are used in the search for reference
mode to search for the reference cam.
STOP at the Reference Cam
If the STOP function at the reference cam is selected (the control bit STOP_REF_EN is set)
at the start of a run and the reference cam is detected during a run, the stepping motor is
stopped and the run terminated.
Stopping the Stepping Motor in Exceptional Circumstances
The stepping motor is also stopped in the following cases:
● Incorrect operation in the control interface during a run
● External error ERR_24V caused by short circuit
● CPU-master STOP
Effects
If one of the above things occurs and the current positioning operation has to be canceled, it
is terminated by a delay ramp.
The residual distance is updated. This enables you to traverse the residual distance after
stopping by means of a new positioning job in the relative incremental mode.
ET 200S Positioning
Operating Instructions, 05/2007, A5E00124871-04
1STEP 5V/204kHz
2.6 Functions of the 1STEP 5V/204kHz
Displayed by Feedback Bit
-
STOP_EXT
STOP_LIMIT_P
STOP_LIMIT_M
STOP_REF
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