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From: 8144-9199 on 27 Jan 2006 10:43
I?m trying to perform a serial communication via RS-232 with LV 7.1 (my
LV version) examples. I?ve downloaded the NI-VISA full 3.2 and I can?t
run. I?ve done sucessfully a loop-back-test in two computers and they
works well. The message error when try to perform my communications:
"timeout expired operation before completed". Why?!

Thanxs
From: 8144-9199 on 27 Jan 2006 13:14
I?m trying to communicate two computers with each other. For completing
this job i?m using the first example of LV 7.1 search for: serial...

Thanxs
From: 8144-9199 on 30 Jan 2006 13:40
AnalogKid...

I'm using a cross-over cable (null cable, 2<->3 , 3<->2 and
5<->5). I'm using three pins: 2 (Tx), 3(Rx) and 5 (ground), I'm
not using a handshaking! I'm using the same example in two computers
(LV 7.1 Express my version).

Thanxs
From: 8144-9199 on 31 Jan 2006 14:40
Dennis,

I?ve tried your test (your last suggestion) and the program doesn?t
work! I?m selecting pc1 just for writing and pc2 to just for reading
and it seems that the signal isn?t arriving on pc2 and the message
error appears again. When I try the opposite communication (pc2, just
writing and pc1, just reading), the unbelievable result is that the
message sent arrives on pc1 (incredible), but the message is corrupted
(wrong) and an error appears again. I?ve attached for you the LV
example that I?m using. So, what is this phenomenon?!

Thanxs...


example.vi:
http://forums.ni.com/attachments/ni/170/164405/1/example.vi
From: 8144-9199 on 9 Feb 2006 14:41
Dennis,

I could perform the communication with Hypertherminal and before using
the LV example both, sucessfully. But, in this new experimentation I
didn?t change anything and they (computers) works well! Do you know
why?!

Thanxs...
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