Tim Ganz
Member
Working with a parker hydraulic controller i need to setup comms. It sya you need a rs232 null modem cable? Is that the standard serial cable or something different?
Serial Communications
- Thread starter Tim Ganz
- Start date
Eric Nelson
Lifetime Supporting Member + Moderator
A 'standard' serial cable would be a straight-through cable. Pin 1 to Pin1, Pin 2 to Pin 2, etc., while a null modem has certain pins swapped. Most importantly, the TX and RX connections.
You will want a null-modem cable, or use a 'null-modem adapter' with a 'standard' cable.
Wikipedia has a good description... http://en.wikipedia.org/wiki/Null_modem
-Eric
You will want a null-modem cable, or use a 'null-modem adapter' with a 'standard' cable.
Wikipedia has a good description... http://en.wikipedia.org/wiki/Null_modem
-Eric
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