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3UC
PLC User's Manual - Positioning Control Edition
Example Connection
Appendix 1: MELSERVO-J3 Series
Appendix 1-1 Main Unit (Transistor Output)
Apx. - 5
A
Common Items
B
Built-in
Positioning
Functions
Apx.
Example
Connection
2. FX3UC PLC
*1. Be sure to use the class-D grounding method (grounding resistance: 100
Ω
or less).
*2. Near-point signal (DOG)
*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.
LG
OP
DOCOM
PP
CN1
34
33
46
10
DOCOM
DICOM
46
20
OPC 12
NP 35
RD 49
DICOM
ZSP
INP
21
23
24
TLC25
ALM48
CN1
SON
RES
EMG
15
19
42
LSP43
LSN44
CN1
DOCOM
47
ABST
ABSB0
ABSB1
25
22
23
DOCOM
46
SON15
ABSM
ABSR
17
18
CN1
FX
2NC
-16EX
FX
2NC
-16EYT
Refer to Appendix
1.3.1-2.
24V DC
CR 41
SD
Plate
DOG
*2
COM
X004
X017
FX
3UC
-32MT/D
X010
X014
X000
COM1
COM1
Y000
Y017
Y004
COM
X020
FX
2NC
-16EX
X021
X022
X023
X024
X026
X027
X037
X025
X030
COM1
FX
2NC
-16EYT
Y020
Y027
COM1
Photo-
coupler
Photo-
coupler
Immediate stop command
Zero return command
JOG(+)command
JOG(-)command
Forward rotation positioning command
Forward rotation limit (LSF)
*3
Reverse rotation limit (LSR)
*3
Reverse rotation positioning command
Stop command
Class-D
grounding
*1
Zero Point
signal(PG0)
Servo ready
(RD)
Pulse train
CLEAR signal
MR-J3
A
Series servo
amplifier
Zero speed
*4
Positioning completed(INP)
Torque being controlled
*4
Servo error(ALM)
*4
Connected to the
FX
3UC
if the ABS
instruction(FNC
155) is used.
Servo ON
*4
Reset
Emergency stop
Forward rotation limit 2
*3
Reverse rotation limit 2
*3
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