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5.ABSOLUTE POSITION DETECTION SYSTEM
2) Communication sequence
Programmable controller
Requests ABS transfer
Step 1
mode.
Step 2
Receives ready to send.
Outputs ABS data
Step 3
request signal.
Receives 2 bits of ABS data.
Step 4
(ABS processing complete)
(5) Battery installation procedure
The internal circuits of the servo amplifier may be damaged by static electricity.
Always take the following precautions:
NOTICE
1. Ground human body and work bench.
2. Do not touch the conductive areas, such as connector pins and electrical
1) Open the operation window. (When the model used is the MR-J2-200A or more, also remove the front cover.)
2) Install the battery in the battery holder.
3) Insert the battery connector into CON1 until it clicks.
Operation window
Battery
(6) Parameter setting
Set 1
in parameter No. 1 to make the
absolute position detection system valid.
Servo amplifier
Changes DI/DO function for
ABS transfer I/O signal.
Reads ABS data from encoder,
creates current position data,
and outputs ready to send.
Receives ABS data
request signal.
Outputs 2 bits of ABS data.
parts, directly by hand.
Battery connector
Battery holder
For MR-J2-200A or more
DI/DO is used to transfer ABS
data between servo amplifier and
programmable controller.
These steps are repeated
19 times to make up data.
Battery connector
CON1
Battery
1
5– 4
2-bit data is sent 19 times
(32 bits of data + 6 bits of
checksum = total of 38 bits).
For MR-J2-200A or more
Parameter No. 1
Positioning system
0: Incremental
1: Absolute position detection system
CON1
Battery holder
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