On 5/8/01 at 11:37 AM [EMAIL PROTECTED] wrote:
>> Simple - you need a crossover lead.
>> TX -> RX
>> RX <- TX
>> RTS -> CTS
>> CTS <- RTS
>
>> and that is it.
>> No complications with DSR and DTR - forget them.
>
Sometimes you need to tie DTR and DSR together inside the plug on both
sides.
I don't know what all the confusion is about - there are really 6 relevant
signals (and ground), 3 in either direction. Normally they need to be tied
like this: TX <-> RX, RTS <-> CTS, DTR <-> DSR. TX, RX are the serial data,
RTS/CTS are the handshake lines, which are data relevant and can change on
a serial byte per byte basis, and DTR/DSR are peripheral status signals,
which tell you that the port or in fact the device the port is on, is even
active.
The fact that some of these are mislabelled on the QL is not the problem of
RS232 - it might as well have been an error in the manual.
Of course, the 'change' in direction regarding DTE/DCE and male/female
connectors is the biggest RS232 snafu, the best way to get around that is
to use a tester or voltmeter!
On RS232D the apparent change in RTS function is just a change of name - if
you look at the function carefully, it's all the same thing.
Nasta
