Connector 1 Connector 2 Function2 3 Rx <------- Tx 3 2 Tx --------> Rx 5 5 Signal ground
Connector 1 represents the DB9 connector pins for the computer's serial port.
Connector 2 represents the pins on the S12 receiver.
Only three pins are needed to make the RS232 connector work.
The diagram shown above got the RS232 working on my S12. EB
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12-15-2011,08:06 PM