1PosSSI/Analog
6.6 Functions of the 1PosSSI/Analog
ET 200S Positioning
Operating Instructions, 05/2007, A5E00124871-04
259
Changing the Voltage for Rapid Feed and Creep Feed
The default setting for rapid feed is 10 V and the default setting for creep feed is 1 V. You
can only change these settings using JOBs 5 and 6.
After the 1PosInc/Analog starts up or after parameter assignment with changed parameters,
the values are accepted from the parameters.
You can set a voltage between 0 V and 11.7589 V (including overrange) in S7 analog value
format (you will find a detailed explanation in the
Distributed I/O Device
manual).
If you have selected a greater voltage for creep feed than for rapid feed, there will be
acceleration at the switchover point from rapid feed to creep feed.
Parameters Meaning Value range Default setting
Drive
Adapt direction If you adjust the direction, this results in
the polarity reversal of your drive
• Off
• On
Off
Function DO Output:
Your drive is controlled by the analog
output using ±10 V.
You control the OUT 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 set by the
1PosSSI/Analog using the OUT digital
output.
Plus direction: OUT = 1
Minus direction: OUT = 0
• Output
• Direction
Output
Switch-off Use this parameter to determine the
course of the voltage after the
switch-off point. It is only effective in
the relative and absolute positioning
modes.
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.
• Directly
• Ramp
Directly
Switch-off difference 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
deceleration from rapid to creep feed,
and instead the response is executed
directly at the switch-off point.
You can change the switch-off
difference with JOB 3.
0 - 65 535 100
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