B&B Electronics 4WSD9TB - Datasheet - Manual (Page 2)

4WSD9TB-0712 - p2/5
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Table 1 – Switch Settings for Operating Mode
Switches Switch 1 (Tx) Switch 2 (Rx) Switch 3 (bridge) Switch 4 (bridge)
Operating Mode
RS-485 2-Wire Mode
(half duplex)
RS-485 Echo Off 2-Wire 2-Wire
RS-485 4-Wire Mode (full
duplex)
RS-485
Echo On
4-Wire 4-Wire
RS-422 4-Wire Mode
(full duplex)
RS-422 Echo On 4-Wire 4-Wire
Loopback Test Mode* As Desired Echo On 2-Wire 2-Wire
*
Used with HyperTerminal or another terminal program to confirm operation of data through converter.