Omron CJ1W-C113 - REV 02-2008, Operation Manual

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Origin Search Using Limit Input Section 10-5
10-5 Origin Search Using Limit Input
Overview
• An origin search can be carried out in single-direction mode using the
CW/CCW limit input signal as an origin proximity input signal.
• The origin is established by the first origin input signal after the CW or
CCW limit input switch is turned from ON to OFF.
Operation Example
The following example is an origin search operation in single-direction mode
using the CCW limit input signal. In this example, the CCW limit input is an
N.C. contact. With an N.O. contact, the logic is reversed.
1,2,3... 1. When the operation start switch is turned ON, the origin search starts with
an origin search high speed of 500 pps in the CW direction on the X axis.
2. When the CCW limit input signal is turned OFF, the program decelerates
to an origin search proximity speed of 100 pps.
3. When the first origin input signal is turned on after the CCW limit input sig-
nal is turned ON, the pulse output is stopped and the origin is established.
Setting the PCU
Unit number: Unit #0
PCU used: NC113
Operation starts
Speed (pps)
Time
CCW limit input signal
Origin input signal
Pulse output