Basic Function - Mitsubishi Electric MR-J5 Series User Manual

9.4

Basic function

Homing [G] [WG]
Precautions
• The incremental linear encoder and the absolute position linear encoder have different reference home positions at
homing.
• For the incremental linear encoder, a home position (reference mark) of the linear encoder is necessary in the homing
direction.
• To execute a homing securely in the following example, start the homing after moving the linear servo motor to the LSN with
the JOG operation and others.
Returnable area: Homing is possible when homing
is started from this area.
LSN
Homing direction
Homing setting method
■Incremental linear encoder
• Interval setting of homing
When an incremental linear encoder is used, the home position is the position per 1048576 pulses (changeable with [Pr.
PL01.2 Homing stop interval setting]) with reference to the linear encoder home position (reference mark) that passed through
first after a homing start. Change the setting value of [Pr. PL01] according to the linear encoder resolution.
Servo parameter
PL01.2
Non-returnable area: Homing is not possible when homing
Dog
Home position of linear encoder (reference mark)
Description
Homing stop interval setting
13
0: 2 (= 8192) pulse
17
1: 2 (= 131072) pulse
18
2: 2 (= 262144) pulse
20
3: 2 (= 1048567) pulse
22
4: 2 (= 4194304) pulse
24
5: 2 (= 16777216) pulse
26
6: 2 (= 67108864) pulse
30
7: 2 (= 1073741824) pulse
Initial value: 3 (220 (= 1048567) pulses)
is started from this area.
LSP
9 USING A LINEAR SERVO MOTOR
9
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9.4 Basic function