Siemens simatic et 200s Operating Instructions Manual page 138

1PosInc/Analog
4.6 Functions of the 1PosInc/Analog
Feedback Signals: Search for Reference
Address
Byte 0
Bytes 1 to 3
Parameters: Search for Reference
Parameters
Reference point run and evaluation of the reference signal
Reference signal
Reference switch
Start direction of the
reference point run
Acceleration T in ms Time required for a change in voltage
acc
Deceleration T in ms Time required for a change in voltage
dec
138
Assignment
Bit 3: SYNC
Bit 2: POS_ DONE
Bit 1: POS_ERR
Bit 0: POS_ACK
Actual value
(linear axis: 0 to 16 777 215; rotary axis: 0 to end of rotary axis - 1)
Meaning
This parameter defines the relevant
switch or the combination of switch and
zero mark.
Relevant in the case of reference
signal:
Reference switch and zero mark
•
Reference switch
•
This parameter defines the referencing
direction in which the relevant switch
must be traversed.
via a ramp from 0 V to10 V.
At 0 ms acceleration is without a ramp.
You can change the acceleration using
Job 7.
via a ramp from 10 V to 0 V.
At 0 ms deceleration is without a ramp.
You can change the deceleration using
Job 8.
Value range
Reference switch and zero
•
mark
Reference switch
•
Zero mark
•
Reduction cam towards
•
minus
Reduction cam towards plus
•
Minus limit switch
•
Plus limit switch
•
Plus
•
Minus
•
0 - 65535
0 - 65535
Operating Instructions, 05/2007, A5E00124871-04
Default setting
Reference switch
and zero mark
Reduction cam
towards minus
Plus
10000
10000
ET 200S Positioning