On 2/17/2011 2:59 PM, Hal Murray wrote:
In article<[email protected]>,
Chris Albertson<[email protected]> writes:
(It's a 75 foot serial cable.) I suspect a software configuration
problem or maybe polarity.
You should also consider possible problems with the serial cable. The
RS232-C standard says fifty feet is the maximum length. Many people
have used cable runs far longer than fifty feet. It frequently works
but when it doesn't you'll find sympathy in the dictionary!
Use high quality cable. The cable run should avoid fluorescent lights,
electric motors, and other sources of interference!
<snip>
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