Author Topic: rs 232 cable  (Read 2370 times)

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Offline karmaxTopic starter

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rs 232 cable
« on: October 14, 2008, 03:27:18 AM »
hi guys... i want to connect rx and tx pin of my rf module withmy rs232 wire but its pack it has 9 wire.
red
grey
black
yellow
orange
blue
green
violet
light pink

i want to know which is transmission and which is receving wire.. please reply
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Offline izua

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Re: rs 232 cable
« Reply #1 on: October 14, 2008, 03:55:58 AM »
rs wires coloring varies widely.
tx pin is 2, rx pin is 3, gnd is 5. put a ohmeter on your wire and at the other end.
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Offline BuddingContraptionist

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Re: rs 232 cable
« Reply #2 on: October 14, 2008, 07:07:27 AM »
true rs232 has only tx, rx, and ground when you don't do any flow control.  if you turn on flow control it uses the other wires as a handshaking mechanism, check this out:

http://www.internet-remotecontrol.net/pccompci/rs232-cable-technology.html
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Offline Admin

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Re: rs 232 cable
« Reply #3 on: October 15, 2008, 09:46:11 PM »
Trace the wires to the connector:

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