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MELSEC-Q
12 CONTROL SUB FUNCTIONS
(3) 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>
<Programmable controller system>
QCPU
QD75
16 points input module *
16 points output module *
*: The X and Y devices can be set arbitrarily with the program.
MR-J3-A
22(ABSB0)
0(X47)
1(X48)
2(X49)
0(Y50)
1(Y51)
2(Y52)
ABS transmission data bit 0
ABS transmission data bit 1
ABS transmission data ready
Servo ON
ABS transfer mode
ABS request
23(ABSB1)
25(ABST)
15(SON)
17(ABSM)
18(ABSR)
Details of servo amplifier connector pins
The following table shows the pins for setting the "absolute position detection
system".
Signal name Abbreviation Pin No. Function and application
ABS transfer mode ABSM 17
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.
ABS request ABSR 18
The ABSR is turned ON when ABS data is requested in the ABS
transfer mode.
ABS transmission
data bit 0
ABSB0 22
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.
ABS transmission
data bit 1
ABSB1 23
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.
ABS Transmission
data ready
ABST 25
This indicates the ABS transmission data preparation completed in the
ABS transfer mode. When the preparation is completed, the ABST is
turned ON.
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.
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).
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