Mitsubishi Electric GOT2000 Series Connection Manual page 172

(14) RS485 connection diagram 14)
SDA1(TXD1+)
SDB1(TXD1-)
SDA2(TXD2+)
SDB2(TXD2-)
RDA1(RXD1+)
RDB1(RXD1-)
RSA(RTS+)
RSB(RTS-)
CSA(CTS+)
CSB(CTS-)
RDA2(RXD2+)
RDB2(RXD2-)
*1
*2
*3
*4
3 - 46
3.3 Connection Diagram
* 3
GOT side
6
8
SG
2
5
7
10
12
14
16
18
20
NC
1
NC
3
NC
4
9
11
NC
13
NC
15
NC
17
NC
19
Pin No. of control equipment differs depending on the model. Refer to the following table.
Signal name
(02, 04)
Pin No.
RDA 17
RDB 18
SDA 15
SDB 16
SG 5
FG 3, 4
CMF050
Signal name
RDA
RDB
SDA
SDB
SG
FG
Terminating resistor should be provided for a control equipment which will be a terminal.
Set the terminating resistor of GOT as follows.
Set the terminating resistor setting switch of the GOT main unit to "100 OHM".
➠ ■3.
Connecting terminating resistors
Connect FG grounding to the single-sided end of a cable shield line.
Terminating resistor(150Ω 1/2W)
Control equipment side
RDA
59
SDA
57
RDB
60
SDB
58
SG
61
FG
3
* 4
Model of control equipment
SDC20 SDC21
(09) (03, 06, 08)
Pin No. Pin No.
18 27
19 28
16 25
17 26
5 29
3, 4 3, 4
Model of control equipment
PBC201-VN2
CML
Pin No. Pin No.
9 12
10 13
7 14
8 15
12 16
19 3
* 2
Control
equipment
side
59
57
60
58
61
3
* 4
SDC30 SDC31
(040, 041) (045) (446, 546)
Pin No. Pin No. Pin No.
18 18
19 19
16 16
17 17
5 5
3, 4 3, 4
CMC10B
Pin No.
11
12
13
14
15
-
RDA
SDA
RDB
SDB
SG
FG
SDC40A/40B/
40G
Pin No.
27 59
28 60
25 57
26 58
29 61
3, 4 3
AHC2001
Pin No.
3
2
5
4
1
-