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SVR-1650E/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