Samsung SSA-P401 - Manual (Page 20)

20_ installation and external connection
installation and external connection
RS-422 Communication Port Connection (Multiple Units)
The RS-422/RS-232 converter is required to establish RS-422 communications.
- Follow the guidelines below to make connection between devices.
Connect TX(-) of one device to TX(-) of other one.
Connect TX(+) of one device to TX(+) of other one.
Connect RX(-) of one device to RX(-) of other one.
Connect RX(+) of one device to RX(+) of other one
Set a unique board ID for each product.
- Follow the guidelines below to make connection between the terminal device and the RS-422 9-pin
connector of the RS-422/RS-232 converter.
Connect RS-422 TX(-) to the RX(-) port of the converter.
Connect RS-422 TX(+) to the RX(+) port of the converter.
Connect RS-422 RX(-) to the TX(-) port of the converter.
Connect RS-422 RX(+) to the TX(+) port of the converter.
Connect the 9-pin connector of the RS-422/RS-232 converter to the COM port of the computer.
Install and launch the application (SAMS).
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T+ T- R+ R-
RxD
TxD
Power
RS-422/232
Converter
RS-232C
MAX. 1200m
HOST
TX-
TX+
RX-
RX+