Mitsubishi Electric MELSEC-L LD75P User Manual page 568

• Connection example
The following diagram shows the example of connection between the programmable controller system and
the Mitsubishi Electric servo amplifier (MR-J3-A).
<Servo amplifier>
MR-J3-A
*2 The X and Y devices can be set arbitrarily with the program.
• Details of servo amplifier connector pins
The following table shows the pins for setting the "absolute position detection system".
Signal name
ABS transfer mode
ABS request
ABS transmission data bit 0
ABS transmission data bit 1
ABS transmission data ready
*3 When "use in the absolute position detection system" is selected in the parameter No. PA03, the pin 17 is the ABS
transfer mode (ABSM), and the pin 18 is the ABS request (ABSR). The signals do not return to the original signal even
after the data transfer is completed.
Remark
For details on signals of the pin 17 and 18 when the ABS transfer mode is off and I/O interface, refer to the manual of the
servo amplifier (MR-J3-A).
566
ABS transmission data bit 0
22(ABSB0)
ABS transmission data bit 1
23(ABSB1)
ABS transmission data ready
25(ABST)
Servo ON
15(SON)
ABS transfer mode
17(ABSM)
ABS request
18(ABSR)
Abbreviation Pin No.
*3
ABSM
17
*3
ABSR
18
ABSB0 22
ABSB1 23
ABST 25
Function and application
While the ABSM is turned ON, the servo amplifier is in the ABS transfer mode, and
the CN1-22  23  25 functions are as shown in this table.
The ABSR is turned ON when ABS data is requested in the ABS transfer mode.
This indicates the lower order bit among 2 bits of ABS data to be transferred from the
servo amplifier to the programmable controller system in the ABS transfer mode. The
ABSB0 turns ON when this signal occurs.
This indicates the upper order bit among 2 bits of ABS data to be transferred from the
servo amplifier to the programmable controller system in the ABS transfer mode. The
ABSB1 turns ON when this signal occurs.
This indicates the ABS transmission data preparation completed in the ABS transfer
mode. When the preparation is completed, the ABST is turned ON.
<Programmable controller system>
LCPU
LD75
0(X47) 16 points input module
1(X48)
2(X49)
16 points output module
0(Y50)
1(Y51)
2(Y52)
*2
*2