Siemens SIMATIC ET 200S - Wiring the IM151-1 BASIC, IM151-1 STANDARD and IM151-1 HIGH FEATURE interface modules

1PosInc/Analog
4.6 Functions of the 1PosInc/Analog
ET 200S Positioning
146 Operating Instructions, 05/2007, A5E00124871-04
Rotary axis
You determine the direction in which the destination is approached by selecting the
directional enable (DIR_M, DIR_P):
Control bits DIR_P and DIR_M Direction
DIR_P = 1
DIR_M = 0
The destination is approached in the plus direction.
DIR_P = 0
DIR_M = 1
The destination is approached in the minus direction.
DIR_P = 1
DIR_M = 1
The destination is approached by the shortest route. The
1PosInc/Analog determines the direction the destination is to be
approached from.
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Figure 4-18 Execution of Absolute Positioning (Switch-Off Parameter: Ramp)