Mitsubishi Electric MELSERVO MR-J3 A Series, Instruction Manual

Page: 390 / 460

14 - 5
14. ABSOLUTE POSITION DETECTION SYSTEM
14.5 Signal explanation
When the absolute position data is transferred, the signals of connector CN1 change as described in this
section. They return to the previous status on completion of data transfer. The other signals are as described in
section 3.5.
For the I/O interfaces (symbols in the I/O Category column in the table), refer to section 3.8.2.
Signal name Code CN1 Pin No. Function/Application
I/O
category
Control
mode
ABS transfer
mode
ABSM
(Note)
17
While ABSM is on, the servo amplifier is in the ABS transfer
mode, and the functions of ZSP, TLC, and D01 are as
indicated in this table.
DI-1
ABS request ABSR
(Note)
18
Turn on ABSR to request the ABS data in the ABS transfer
mode.
DI-1
ABS transmission
data bit 0
ABSB0 22
Indicates the lower bit of the ABS data (2 bits) which is sent
from the servo to the programmable controller in the ABS
transfer mode.
If there is a signal, D01 turns on.
DO-1
ABS transmission
data bit 1
ABSB1 23
Indicates the upper bit of the ABS data (2 bits) which is sent
from the servo to the programmable controller in the ABS
transfer mode.
If there is a signal, ZSP turns on.
DO-1
ABS transmission
data ready
ABST 25
Indicates that the data to be sent is being prepared in the ABS
transfer mode. At the completion of the ready state, TLC turns
on.
DO-1
Home position
setting
CR 41
When CR is turned on, the position control counter is cleared
and the home position data is stored into the non-volatile
memory (backup memory).
DI-1
P
(Position
control)
Note. When "Used in absolute position detection system" is selected in parameter No.PA03, pin 17 acts as the ABS transfer mode
(ABSM) and pin 18 as the ABS request (ABSR). They do not return to the original signals if data transfer ends.