SVR-1650E/1640E/1640A/950E User Manual
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3. External control equipment (RS-422/485)
This is a terminal for connecting external control equipment.
The switch labeled TERM is used to turn ON/OFF terminating resistance for RS–422/485 communication
equipment.
PORT
No.
RS-422
RS-485
1
RX+ (+Data Receive)
Data+
2
RX- (-Data Receive)
Data-
3
N/C (Not connected)
N/C (Not connected)
4
N/C (Not connected)
N/C (Not connected)
5 GND(Ground)
GND(Ground)
6
N/C (Not connected)
N/C (Not connected)
7 Tx-(-Data
Send)
Data-
PORT A
(Controller
SCC-3100A Control)
8 Tx+(+Data
Send)
Data+
9 Rx+(+Data
Receive)
Data+
10 Rx-(-Data
Receive)
Data-
11
N/C (Not connected)
N/C (Not connected)
12
N/C (Not connected)
N/C (Not connected)
13 GND(Ground)
GND(Ground)
14
N/C (Not connected)
N/C (Not connected)
15 Tx-(-Data
Send)
Data-
PORT B
(Speed Dome Control)
16 Tx+(+Data
Send)
Data+
TERM 1 switch controls PORT A, TERM 2 Switch controls PORT B
1, 2 : ON
→
RS-485 MODE, OFF .
→
RS-422 MODE
3, 4 : ON
→
Termination On, OFF
→
Termination Off
