Connection Diagram - Mitsubishi Electric LE7-40GU Instruction Manual

Connection diagram

The wiring shown below is a wiring example when the master station is an FX series PLC. If the pin number of the partner side
is different, please wire as shown below according to the pin name.
One-pair wiring (master station: FX series PLC)
CPU module built-in RS-485 port
FX5-485-BD
FX5-485ADP
SDA
Termination
SDB
Resistance
110 
*2
RDA
RDB
SG
*1 Be sure to apply Class D grounding to the shield of the twisted pair cable to be connected.
*2 Terminal resistor should be attached to both ends of the line. LE7-40GU, the built-in RS-485 port of the CPU module, FX5-485-BD, and
FX5-485ADP, have built-in terminating resistors. Set the terminating resistor selector to 110.
Two-pair wiring (master station: FX series PLC)
CPU module built-in RS-485 port
FX5-485-BD
FX5-485ADP
SDA
SDB
*2
RDA
RDB
*2
Termination
Resistance
SG

330
2
*1 Be sure to apply Class D grounding to the shield of the twisted pair cable to be connected.
*2 Terminal resistor should be attached to both ends of the line. LE7-40GU, the built-in RS-485 port of the CPU module, FX5-485-BD, and
FX5-485ADP, have built-in terminating resistors. Set the terminating resistor selector to 330.
7 MODBUS/RTU, ASCII (SLAVE)
116
7.2 Wiring
LE7-40GU
SDA
SDB
RDA
RDB
SG
Class D grounding
(Ground resistance:

100 or less) *1
LE7-40GU
SDA
SDB
RDA
RDB
SG
Class D grounding
(Ground resistance: (Ground resistance:

100 or less)
*1
LE7-40GU
SDA
SDB
RDA
RDB
SG
Class D grounding
(Ground resistance:

100 or less)
*1
LE7-40GU
SDA
SDB
RDA
RDB
SG
Class D grounding
(Ground resistance:

100 or less)
*1
LE7-40GU
SDA
Termination
SDB
Resistance
110 
*2
RDA
RDB
SG
Class D grounding
(Ground resistance:
 *1
100 or less)
LE7-40GU
SDA
SDB
*2
RDA
RDB
*2
Termination
Resistance
SG

330
2
Class D grounding

100 or less)
*1