Absolute Position System - Mitsubishi Electric MELSEC-Q Series User Manual

13.6 Absolute position system

PLC
CPU
The Simple Motion module can construct an absolute position system.
The following describes precautions when constructing the absolute position system.
Simple Motion
Position command
Control command
Servo parameter
Monitor data
Fig. 13.35 Configuration of absolute position system
[1] Setting for absolute positions
For constructing an absolute position system, use a servo amplifier and a
servomotor which enable absolute position detection.
It is also necessary to install a battery for retaining the location of the HPR in the
servo amplifier.
To use the absolute position system, set "1: Enabled (absolute position detection
system)" for the parameter shown in the following table.
Servo series
MR-J4-B
(For CC-Link IE Field Motion)
or MR-J4-GF
In addition, select "0: Invalid" in "Absolute position counter warning (AL.E3)
selection (PC18)" for the MR-J4-GF.
Refer to each servo amplifier instruction manual for details of the absolute
position system.
module
Position command
Control command
Servo parameter
HP
address
Monitor data
Return of the present value
Parameter
Absolute position
detection system (PA03)
13 - 67
Chapter 13 Control Sub Functions
Battery
Servo amplifier
Back-up
Buffer memory address
–
Servomotor
M
Encoder