Mitsubishi Electric GOT2000 Series Connection Manual page 295

(6) RS-422/485 connection diagram 6)
GOT side(slave) *3
(2nd)
SDA
SDB
RDA
RDB
SG
*5
RSA
*5
RSB
*5
CSA
*5
CSB
*1 The actual terminal layout on the MODBUS/RTU master equipment may differ from the example shown above. SDA/B(+/-) and
RDA/B(+/-) terminals can be separated from each other. In such cases, make sure to connect the cables and wires as described
in the MODBUS/RTU master equipment manual.
*2 Some MODBUS/RTU master equipment don't have SG. In this case, the wiring between GOT and SG is unnecessary.
*3 When placing the GOT to the terminal in the system configuration, set the terminating resistor to "330 Ω". When placing the GOT
to the position other than the terminal, set the terminating resistor of the GOT to "OPEN".
➠
1.4.3 Terminating resistors of GOT
*4 For the terminating resistor of MODBUS/RTU master equipment, refer to the manual of MODBUS/RTU master equipment.
*5 The signals RSA, RSB, CSA, and CSB are not provided for
(7) RS-422/485 connection diagram 7)
GOT side(slave)
*3
(2nd)
SDA
SDB
RDA
RDB
SG
*5
RSA
*5
RSB
*5
CSA
*5
CSB
*1 The actual terminal layout on the MODBUS/RTU master equipment may differ from the example shown above. SDA/B(+/-) and
RDA/B(+/-) terminals can be separated from each other. In such cases, make sure to connect the cables and wires as described
in the MODBUS/RTU master equipment manual.
*2 Some MODBUS/RTU master equipment don't have SG. In this case, the wiring between GOT and SG is unnecessary.
*3 When placing the GOT to the terminal in the system configuration, set the terminating resistor to "110 Ω". When placing the GOT
to the position other than the terminal, set the terminating resistor of the GOT to "OPEN".
➠
1.4.3 Terminating resistors of GOT
*4 For the terminating resistor of MODBUS/RTU master equipment, refer to the manual of MODBUS/RTU master equipment.
*5 The signals RSA, RSB, CSA, and CSB are not provided for
GOT side(slave) *3
(1st) MODBUS /RTU master equipment side
SDA
SDB
RDA
RDB
SG
*5
RSA
*5
RSB
*5
CSA
*5
CSB
.
GOT side(slave)
*3
(1st) MODBUS /RTU master equipment side
SDA
SDB
RDA
RDB
SG
*5
RSA
*5
RSB
*5
CSA
*5
CSB
. Return connection is not required.
7.3 Connection Diagram
*1*2*4
RDA(+)
RDB(-)
SDA(+)
SDB(-)
SG
*1*2*4
RDA(+)
RDB(-)
SDA(+)
SDB(-)
SG
7 - 9
7