Omron CS1W-MC221 -, Operation Manual

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Origin Search Operations Section 9-4
Setting the Initial Origin
Search Direction The origin search is performed by previous MC Unit models in the CW or
CCW direction according to the phase-Z detection direction. With the CS1W-
MC421/221, the origin search can be performed in the direction opposite to
the preset phase-Z detection direction, which makes it possible to shorten the
time taken to search for the origin. In the following example, the phase-Z
detection direction is preset to the CW direction.
If the phase-Z detection direction is set to CW but the initial origin search
direction is set to CCW, the origin search is performed in the CCW direction.
Note The origin search is performed in the direction opposite to the initial origin
search direction when both the origin proximity signal input and the CW/CCW
limit signal input are OFF.
9-4-3 Origin Search Patterns Set by Origin Search Method
This section provides basic examples of origin search patterns with the origin
search method set to Reverse Mode or One-direction Mode. For details on
other search patterns, refer to
Appendix F Origin Search Patterns . Operation
will vary depending on the position of the workpiece when the origin search is
executed.
Power ON Mode The origin is automatically set to the motor’s position when power is turned
ON.
Limit signal input
Phase-Z signal
Speed
Origin proximity
signal input
The set direction is opposite to the phase-Z
detection direction. (See note.)
The set direction is the same as the
phase-Z detection direction.