Siemens simatic et 200s Operating Instructions Manual page 179

Parameters
Reference point run and evaluation of the reference signal
Reference signal
Reference switch
Start direction of the
reference point run
Drive
Adapt direction
Function DO
Switch-off
Switch-off difference
Switchover difference
ET 200S Positioning
Operating Instructions, 05/2007, A5E00124871-04
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
switch must be traversed.
If you adjust the direction, this results
in the polarity reversal of your drive
Output:
Your drive is controlled by the analog
output using ±10 V.
You control the DO digital output
using the CTRL_DO control bit.
Direction:
Your drive is controlled by the analog
output using 0 V to 10 V.
The direction for your drive is
specified by the 1PosInc/Analog via
the DO digital output.
Plus direction: DO = 1
Minus direction: DO = 0
Use this parameter to determine the
course of the voltage after the switch-
off point.
Directly: The voltage is set directly to
0 V at switch-off point.
Ramp: As of switch-off point, voltage
is reduced to 0 V using the ramp.
Defines the distance from the
destination at which the drive is
slowed down from creep feed to 0.
If the switch-off difference ≥ the
switchover difference, there is no
switchover point. There is no
slowdown from rapid feed to creep
feed.
Defines the distance from the
destination at which the drive is
slowed down from rapid feed to
creep feed.
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
•
Off
•
On
•
Output
•
Direction
•
Directly
•
Ramp
•
0 - 65 535
0 - 65 535
1PosInc/Analog
4.8 Parameter List
Default setting
Reference switch and
zero mark
Reduction cam
towards minus
Plus
Off
Output
Directly
100
1000
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