Mitsubishi Electric GOT2000 Series Connection Manual page 242

(8) RS-422/485 cable 8)
GOT side (terminal block)
SDA
SDB
RDA
RDB
SG
*1 Some MODBUS
*2 Some MODBUS
Make sure to connect the cables and wires as described in the MODBUS
*3 When placing the GOT to the terminal in the system configuration, set the terminating resistor to "330 ".
When placing the GOT to the position other than the terminal, set the terminating resistor of the GOT to "OPEN".
Set the 1pair/2pair signal selection switch to "1pair" when using the connection conversion adapter.
*4 For the terminating resistor of MODBUS
(9) RS-422/485 cable 9)
GOT side (terminal block)
SDA
SDB
RDA
RDB
SG
*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".
Set the 1pair/2pair signal selection switch to "1pair" when using the connection conversion adapter.
*4 For the terminating resistor of MODBUS
5 - 10
5. MODBUS(R)/RTU CONNECTION
5.3 Connection Diagram
MODBUS
*3
®
/RTU equipment doesn't have SG. In this case, the wiring between GOT and SG is unnecessary.
®
/RTU equipment require the control line (CS, RS, etc.) to be controlled.
1.4.3 Terminating resistors of GOT
Connection Conversion Adapter User's manual
®
MODBUS
*3
®
/RTU equipment doesn't have SG. In this case, the wiring between GOT and SG is unnecessary.
1.4.3 Terminating resistors of GOT
Connection Conversion Adapter User's manual
®
® *1*2*4
/RTU equipment side
(1st)
RDA(+)
RDB(-)
SDA(+)
SDB(-)
SG
®
/RTU equipment manual.
/RTU equipment, refer to the manual of MODBUS
® *1*2*4
/RTU equipment side
(1st)
(+)
(-)
SG
®
/RTU equipment may differ from the example shown above. SDA/B(+/-) and RDA/
/RTU equipment, refer to the manual of MODBUS
®
MODBUS /RTU equipment side
(2nd)
RDA(+)
RDB(-)
SDA(+)
SDB(-)
SG
®
/RTU equipment.
®
MODBUS /RTU equipment side
(2nd)
(+)
(-)
SG
®
/RTU equipment.
*1*2*4
*1*2*4
®
/