Quote:
Originally Posted by Shano592
That is some brilliant sleuthing, Gary. Thank you putting this in front of me.
I have some plastic covered connector cables at home, some looping back will be quick and painless.
I will go through the booklet, and make a note of speeds etc.
Keep you all posted.
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Hi Shane,
There is a phenomena of what I refer to as the "RS-232 Blues".
Historically, there are 25-way connectors and then when IBM came along, 9-way
connectors. Then there are male and female connectors. Some are wired
as DTE's (Data Terminal Equipment) and others as DCE's (Data Circuit-terminating
Equipment) which results, by definition, in the pin assignments of the two being different.
Then there are Baud rates, whether the device would expect hardware handshaking
and so on.
Needless to say, with the exception of Baud rates, you don't need to worry about
any of the above because we know the module you use will have a 9-way
male IBM style D-conector to emulate as if it were a PC.
However, the "loop-back" test is always a tried and tested friend to the engineer
in the absence of other debugging aids such as a RS-232 breakout box
or line monitor when faced with the "RS-232 Blues".
Experience says that chances what you have will probably work after some
re-configuration.
