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

FX -CAN 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.
FX
FX
FX5U
PLC
Strip a part of the coating of the shielded twisted pair cable as shown in subsection 4.2.3.
Ground the PLC's 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.
(1) CAN_GND
(3) CAN_SHLD
Grounding resistance of
100 Ω or less (Class D)
FX -CAN
3U
*1
/FX /
3G 3GC
*1
/FX /
3U 3UC
*2 /FX5UC *2
Grounding resistance of
100  or less (Class D)
-CNV-IF or FX -1PS-5V is necessary to connect the FX
3UC
(2) CAN_L
(4) CAN_H
(5) CAN_V+
Grounding resistance of
100 Ω or less (Class D)
→ Refer to FX
→ Refer to FX
→ Refer to MELSEC iQ-F FX5U User's Manual (Hardware)
→ Refer to MELSEC iQ-F FX5UC User's Manual (Hardware)
CAN Bus connector
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
Hardware Edition
3GC
→ Refer to FX
Hardware Edition
3U
Hardware Edition
3UC
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).
-CAN to an FX
3U 3GC
-CAN to an FX5U/FX5UC
3U
4 Wiring
1
2
3
4
5
6
7
8
9
/FX
3UC
10
31