YASKAWA JEPMC-MP2300-Y Series User Manual

7
Motion Commands
7.2.3
Zero Point Return (ZRET)
7-32
[ k ] NOT Signal Method (OW

3C = 17)
z
Operation after Zero Point Return Starts
Travel is started at the approach speed in the negative direction until the stroke limit is reached.
When the NOT signal is detected, the direction is reversed to return at the positioning speed.
When a change in the NOT signal status from ON to OFF is detected during the return, the position-
ing is performed.
When the positioning has been completed, a machine coordinate system is established with the final
position as the zero point.

The moving amount after the change of the NOT signal status is detected is set in the Home Off-
set. The positioning speed is set in the Speed Reference.

If a positive value is set for the approach speed, the command will end in an error.

If an OT signal is detected during the positioning speed operation, an OT alarm will occur.

Detecting the change in the OT signal status is performed using software processing. The position
where positioning is completed will depend on the high-speed scan setting, positioning speed, etc.
Do not use this method if repeat accuracy is required in the position where the zero point return
operation is completed.
* 1. The SERVOPACK P-OT signal.
* 2. The SERVOPACK N-OT signal.

The stopping method when the OT signal is detected depends on the setting of SERVO-
PACK parameters.
z
Setting Parameters
NOT
*2
POT
*1
Zero Point
Start
Positioning Speed
(OL10)
Home Offset
(OL42)
Approach Speed
(OL3E)
Parameter Name Setting
OW

3C
Home Return Type
17: NOT Only Method
OL

10
Speed Reference
Set the positioning speed to use after detecting the NOT signal. The sign is
ignored.
The travel direction will depend on the sign of the Home Offset.
OL

3E
Approach Speed
Set the speed to use when starting a zero point return.
Add a sign so that the travel direction will be negative.
OL

42
Home Offset
Set the travel distance from the point where the NOT signal is detected.
The travel direction will depend on the sign.

YASKAWA JEPMC-MP2300-Y Series Specifications

General

Brand	YASKAWA
Model	JEPMC-MP2300-Y Series
Category	Controller
Language	English