Sensoray 2453 - Manual (Page 9)

Configuration Switches
A block of DIP switches allows configuration of 2453's serial interface. Individual switch
numbers and On/Off positions are indicated on the block.
The interface can be configured for RS-232, RS-422 or RS-485 modes. Additionally a 120
Ohm termination can be turned on or off on RS-422/485 receive and transmit lines
individually.
The default switch settings are all Off (RS-232 mode).
Position On Off
1 RS-485 RS-422
2 RS-485 RS-422
3 RX termination ON RX termination OFF
4 TX termination ON TX termination OFF
5 RS-4xx mode RS-232 mode
6 Reserved
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