Mitsubishi Electric GT1685 Connection Manual page 690

RS485 connection diagram 5)
(For 1 pair wiring)
Serial multi drop
connection unit
SDA
SDB
RDA
RDB
SG
*1 Set the terminating resistor selector to "110 ".
*2 Set the 2-wire/4-wire terminating resistor setting switch of the RS-232/485 signal conversion adaptor as follows.
2-wire type/4-wire type: 2-wire type (1Pair)
• When GOT is a terminal
• When GOT is not a terminal
*3 Make sure to ground a cable shield line by applying Class D Grounding (100 or less).
RS485 connection diagram 5)
(For 2 pair wiring)
Serial multi drop
* 1
connection unit
RDA
RDB
SDA
SDB
SG
*1 Set the terminating resistor selector to "110 ".
*2 Set the 2-wire/4-wire terminating resistor setting switch of the RS-232/485 signal conversion adaptor as follows.
2-wire type/4-wire type: 4-wire type (2Pair)
• When GOT is a terminal
• When GOT is not a terminal
*3 Make sure to ground a cable shield line by applying Class D Grounding (100 or less).
20 - 22
20. GOT MULTI-DROP CONNECTION
20.4 Connection Diagram
* 2
* 1 GOT side
SDA
SDB
RDA
RDB
SG
* 3
20.6.3 Setting switches
Terminating resistor: 110
Terminating resistor: OPEN
1.4.4 Setting the RS-232/485 signal conversion adaptor
GOT side
SDA
SDB
RDA
RDB
SG
* 3
20.6.3 Setting switches
Terminating resistor: 330
Terminating resistor: OPEN
1.4.4 Setting the RS-232/485 signal conversion adaptor
GOT side
SDA
SDB
RDA
RDB
SG
* 3
* 2
GOT side
SDA
SDB
RDA
RDB
SG
* 3
* 2
GOT side
SDA
SDB
RDA
RDB
SG
* 3
* 2
GOT side
SDA
SDB
RDA
RDB
SG
* 3
* 2
* 2