Mitsubishi Electric FX3U SERIES - Page 250

FX 3S /FX 3G /FX 3GC /FX 3U /FX 3UC PLC User's Manual - Positioning Control Edition
Example Connection
Appendix 2. MELSERVO-J3 Series
Appendix 2-3 Absolute Position Detection (Transistor Output)
Apx. - 20
*3. To ensure safety, use the forward rotation limit switch and the reverse rotation limit switch on both sides: the PLC side and
the servo amplifier side. Note that the limit switches on the PLC side should be activated slightly earlier than the limit
switches on the servo amplifier side.
*4. To detect absolute positions, connect this line to the PLC.
*5. Set the pulse output form by pulse output form setting switch.
*6. Input extension blocks are used in the connection example.
Inputs built into the main unit are available in place of extension blocks.
Appendix 2-3 Absolute Position Detection (Transistor Output)
To assign the inputs/outputs, refer to the following section.
Refer to Section 12.1 of "B. Built-in Positioning Function"
Appendix 2-3-1 Sink Input and Sink Output
1. FX3S PLC
*1. Be sure to use the class-D grounding method (grounding resistance: 100   or less).
Pulse output method setting switch Pulse output method
FP

RP side Forward/reverse pulse train
PLS

DIR side Pulse train + direction
Reverse rotation limit 2
(Servo amplifier side)
Reverse rotation limit 1
(Programmable
controller side)
LSR
Forward rotation limit 2
(Servo amplifier side)
Forward rotation limit 1
(Programmable
controller side)
LSF
Reverse rotation Forward rotation
Servo motor
24V
0V
S/S
N
L
ABSB0
46
22
20
ABST 25
ABSB123
CN1
15
18
17
22
25
23
X014
X015
X016
Y006
Y010
COM3
Y007
X000
Y011
X017
100 to 240 V AC
24 V DC
Class-D
grounding
*1
FX 3S -30MT/ES
Photo-coupler
MR-J3A
Series servo
amplifier
ABS (bit0)
ABS (bit1)
Servo-ON
ABS transfer mode
ABS request
Send data ready
Plate
DOCOM
DICOM
SD
SON
ABSR
ABSM
ABSB0
ABST
ABSB1
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