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Yaskawa MP2200 Machine Controller User Manual

Page 407

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7.3 Using an Absolute Encoder

7-23

( 5 ) Setting the Zero Point for an Infinite Length Axis

Execute the ZSET motion command (zero point setting).
The system will settle pulse position at power OFF, encoder position at power OFF, and all position
data when the zero point is set.
The following illustration shows the procedure for setting the zero point for an infinite length axis.

* 1. For an infinite length axis, the Zero Point Offset (setting parameter OL††48) is

valid only when the ZSET command is executed.
Therefore, the OL††48 value doesn’t have to be memorized in a M register.
Set the desired coordinate value in the Zero Point Offset (OL††48) when using
an infinite length axis.
Example:
When setting the current stop position to 0 (zero point position for the machine
coordinate system), set OL††48 to 0.

* 2. Execute with the ZSET command.

Repeat for every axis.

Start

Servo ON

STEP to move to

the zero point.

End

JOG to move close to

the zero point.

YES

NO

Set the zero point.

* 2

Set the desired position at
OL

48.

* 1

Has the setting for the required

axis been completed?

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