Can-Bus Wiring; Connecting Communication Cables; Module Wiring - Mitsubishi Electric MELSEC-F FX3U-J1939 User Manual

FX -J1939 User's Manual
3U
4.2

CAN-Bus Wiring

4.2.1

Connecting communication cables

(1) CAN_GND
Terminating
(2) CAN_L
resistor
(3) CAN_SHLD
(4) CAN_H
(5) CAN_V+
For electromagnetic compatibility (EMC), it is recommended to ground the cable shield at both ends.
Caution
For safety, always check the potential differences between the grounding points. If potential differences are
found, proper measures must be taken to avoid damage.
4.2.2

Module wiring

For further information on PLC wiring, refer to the following manual.
Strip a part of the coating of the shielded twisted pair cable as shown in subsection 4.2.3.
Ground the PLCs grounding terminal there.
*1. An FX
2NC
Series PLC.
*2. An FX5-CNV-BUS or FX5-CNV-BUSC is necessary to connect the FX
PLC.
30
Grounding resistance of
100 Ω or less (Class D)
FX -J1939
3U
FX /FX *1 /
3G 3GC
FX /FX *1
/
3U 3UC
*2 *2
FX5U /FX5UC
PLC
Grounding resistance of
100  or less (Class D)
-CNV-IF or FX -1PS-5V is necessary to connect the FX
3UC
(1) CAN_GND
(2) CAN_L
(3) CAN_SHLD
(4) CAN_H
(5) CAN_V+
Grounding resistance of
100 Ω or less (Class D)
Refer to MELSEC iQ-F FX5U User's Manual (Hardware)
Refer to MELSEC iQ-F FX5UC User's Manual (Hardware)
4.2 CAN-Bus Wiring
(1) CAN_GND
Terminating
(2) CAN_L
resistor
(3) CAN_SHLD
(4) CAN_H
(5) CAN_V+
Refer to FX
Hardware Edition
3G
Refer to FX
Hardware Edition
3GC
Refer to FX
Hardware Edition
3U
Refer to FX
Hardware Edition
3UC
CAN Bus connector
CAN_GND
CAN_L
CAN_SHLD
CAN_H
CAN_V+
Grounding mounting plate or
grounded DIN rail with a
grounding resistance of 100 
or less (Class D).
-J1939 to an FX
3U
-J1939 to an FX5U/FX5UC
3U
4 Wiring
/FX
3GC 3UC