CEL-MAR ADA-11040, User Manual

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3.4. RS485/RS422 NETWORK CONNECTION
RS485/RS422 interface in ADA-11040 converter is described as: Tx+/A, Tx-/B, Rx+, Rx-, GND.
ADA-11040 lets work on RS485 bus & RS422 bus. Both buses need correct cabling.
3.4.1. RS422 (4W) BUS CONNECTION
Before connection 4-wire RS422 bus, should be setted MODE switch to RS422 mode, located on the front panel of ADA-11040. Then
connect bus wires to connectors TX+/A, TX-/B, RX+, RX - as shown bellow.
Fig 6. Example connection of RS422 devices to ADA-11040
3.4.2. RS485 (4W) BUS CONNECTION
Before connection 4-wire RS485 bus, should be setted MODE switch to RS485 mode, located on the front panel of ADA-11040. Then
connect bus wires to connectors TX+/A, TX-/B, RX+, RX - as shown bellow.
Fig 7. Example connection of RS485 (4W) devices to ADA-11040
8
ADA-11040
RS422
connector
Tx+
Tx-
GND
Rx+
Rx-
Rt
Device with
RS422 interface
Rt
Rt
Rx+
Rx-
GND
Tx+
Tx-
V+
V-
RF
V-
V+
SMA con.
RF
RS422
connector
Power Supply
ADA-11040
Rt
Rt
Rx+
Rx-
GND
Tx+
Tx-
V+
V-
RF
V-
V+
SMA con.
RF
RS485
connector
ADA-11040
Rt
Power Supply