Black Box IC476A-F-R2 Network Router User Manual


 
16
ASYNC 232422/485 CONVERTER
5. the other pair of wires
NOTE
Positive and negative are relative terms and may not always have the
same relationship for all RS-422 or RS-485 devices (see the previous
note regarding “flipping the leads”).
Converter RS-485 Device
XMT+ ............................................................RCVA
XMT- .............................................................RCVB
G .....................To Shield (Optional) G
RCV- .............................................................XMTB
RCV+ ............................................................XMTA
IMPORTANT!
If you are not using two IC476A-X-R2s back to back and the procedure on
the previous page produces garbage data (or none at all), flip the “A” and
“B” leads at one end of the 485 connection.
6.
A ground wire is not necessary
for proper operation of the Converter.
7.