Another thought I had is to use something like socat. At least in Linux. socat is a command line program that can hook up inputs and outputs. So you could hook up your /dev/… device to a Named Pipe, or even a socket. Your Rexx program can then use the named pipe of socket to communicate with. socat will take care of things like setting the baud rate.
Bruce > On Feb 4, 2016, at 6:39 PM, CVBruce <cvbr...@gmail.com> wrote: > > Another thing to try. Make a Loop back tester. RX <-> TX, etc to see if you > can echo characters back and forth to your self. If you can’t talk to your > self via the test adapter then you know which side of the connection is > broken. > >> On Feb 2, 2016, at 8:46 AM, Bill Turner, WB4ALM <wb4...@arrl.net> wrote: >> >> 3. I know that data is being transmited, because I can see the >> "flashing lights" on my rs-232 test adapter. I think, however, >> that the speed or parity might be wrong, as the remote device >> does not seem to be responding. >
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