18
RS-232↔RS-422 INTERFACE CONVERTERS
IC631A: RJ-45
Lead/ Pin Pin Pin Pin Lead/
Signal* No.* Color† Color† No.* Signal*
XMT+ 4 Red ................................Yellow 6 RCV+
XMT– 5 Green ...............................Black 3 RCV–
RCV+ 6 Yellow ................................Red 4 XMT+
RCV– 3 Black ...............................Green 5 XMT–
*If the cable is shielded, you can attach one end of the shield to GND (ground, Pin 2 or
Pin 7). Do not run wire from a ground at one end of the cable to a ground at the other
end; the Converter does not reference ground for RS-422 data transmission and you
could create an electrical “ground loop” that could severely damage your equipment.
Also, remember that Pins 1 and 8 are not connected to anything inside the Converter,
so do not connect any wires to them.
†These are standard AT&T
®
color codes. The RJ-45 connectors on your cables or
other equipment might have different-colored pins.
To Next Page