Binary B-660-EXT-444-40, Installation Manual, Page: 15 / 20

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8. RS-232 PASSTHROUGH
RS-232 ports can be used for bi-directional RS-232 signal pass through between the
transmitter and receiver.
Set pin2 of Function DIP Switch to “0” or “1” to select RS-232 connection mode (DTE or DCE),
set pin3 and pin4 of Function DIP Switch to “00” (see Function DIP Switch section), connect
RS-232 control devices (such as PC) to RS-232 ports of transmitter and receiver. See the below
picture:
Note: If the selected RS-232 connection mode is not enabled, please set to another mode.