Mitsubishi Electric GOT2000 Series Connection Manual page 241

(6) RS-422/485 cable 6)
*3
GOT side (terminal block)
SDA
SDB
RDA
RDB
SG
*5
RSA
*5
RSB
*5
CSA
*5
CSB
*1 The actual terminal layout on the MODBUS
B(+/-) terminals can be separated from each other. Make sure to connect the cables and wires as described in the MODBUS
RTU equipment manual.
*2 Some MODBUS
*3 When placing the GOT to the terminal in the system configuration, set the terminating resistor to "110 ".
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
*5 The signals RSA, RSB, CSA, and CSB are not provided for
(7) RS-422/485 cable 7)
*3
GOT side (terminal block)
SDA
SDB
RDA
RDB
SG
*5
RSA
*5
RSB
*5
CSA
*5
CSB
*1 The actual terminal layout on the MODBUS
B(+/-) terminals can be separated from each other. Make sure to connect the cables and wires as described in the MODBUS
RTU equipment manual.
*2 Some MODBUS
*3 When placing the GOT to the terminal in the system configuration, set the terminating resistor to "110 ".
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
*5 The signals RSA, RSB, CSA, and CSB are not provided for
Return connection is not required.
®
MODBUS /RTU equipment side
RDA(+)
RDB(-)
SDA(+)
SDB(-)
SG
®
/RTU equipment may differ from the example shown above. SDA/B(+/-) and RDA/
®
/RTU equipment doesn't have SG. In this case, the wiring between GOT and SG is unnecessary.
®
/RTU equipment, refer to the manual of MODBUS
®
MODBUS /RTU equipment side
(+)
(-)
SG
®
/RTU equipment may differ from the example shown above. SDA/B(+/-) and RDA/
®
/RTU equipment doesn't have SG. In this case, the wiring between GOT and SG is unnecessary.
®
/RTU equipment, refer to the manual of MODBUS
*1*2*4 ®
MODBUS
(1st)
.
*1*2*4 ®
MODBUS
(1st)
.
5. MODBUS(R)/RTU CONNECTION
5.3 Connection Diagram
*1*2*4
/RTU equipment side
(2nd)
RDA(+)
RDB(-)
SDA(+)
SDB(-)
SG
®
/
®
/RTU equipment to be used.
*1*2*4
/RTU equipment side
(2nd)
(+)
(-)
SG
®
/
®
/RTU equipment to be used.
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