Mitsubishi Electric GOT2000 Series Connection Manual page 987

(2) RS-485 connection diagram 2)
(For 1 pair wiring)
Serial multi drop
* 2
connection unit
* 1
SDA
* 1
SDB
RDA
RDB
SG
*1 Use the twisted pair cable for SDA/SDB.
*2 Set the terminating resistor selector to "110 ".
*3 Set the terminating resistor setting switch of the GOT main unit to "Disable".
➠
1.4.3 Terminating resistors of GOT
*4 Connect a 110
*5 Make sure to ground a cable shield line by applying Class D Grounding.
(3) RS-485 connection diagram 2)
(For 2 pair wiring)
Serial multi drop
* 2
connection unit
* 1
RDA
* 1
RDB
* 1
SDA
* 1
SDB
SG
* 5
*1 Use the twisted pair cable for SDA/SDB, RDA/RDB.
*2 Set the terminating resistor selector to "330 ".
*3 Set the terminating resistor setting switch of the GOT main unit to "Disable".
➠
1.4.3 Terminating resistors of GOT
*4 Connect a 330
*5 Make sure to ground a cable shield line by applying Class D Grounding.
* 3
GOT side
SDA1
1
SDB1
2
RDA1
3
RDB1
4
SG
9
SDA2
* 5
5
SDB2
6
RDA2
7
RDB2
8
FG
10
terminating resistor to the GOT to be a terminal.
* 3
GOT side
SDA1
1
SDB1
2
RDA1
3
RDB1
4
SG
9
SDA2
5
SDB2
6
RDA2
7
RDB2
8
FG
10
terminating resistor to the GOT to be a terminal.
* 3
GOT side
SDA2 SDA1
5
SDB2 SDB1
6
RDA2 RDA1
7
RDB2 RDB1
8
SG
9
SDA1 SDA2
1
SDB1 SDB2
2
RDA1 RDA2
3
RDB1 RDB2
4
FG
10
* 3
GOT side
SDA2 SDA1
5
SDB2 SDB1
6
RDA2 RDA1
7
RDB2 RDB1
8
SG
9
SDA1 SDA2
1
SDB1 SDB2
2
RDA1 RDA2
3
RDB1 RDB2
4
FG
10
19.4 Connection Diagram
* 3
GOT side
1
2
3
R
4
* 4
SG
9
5
6
7
8
FG
10
* 3
GOT side
1
2
3
R
4
* 4
SG
9
5
6
7
8
FG
10
19 - 23
19