Wirt Atmar ([log in to unmask]) wrote:
: >Using Printer Type 18 with Xon/Xoff connected directly to a
: >DTC port, we have a problem when the spooler handles more
: >than 6 labels.
 
: Rodolfo,
 
: Are you sure that the printer is set to transmit Xon/Xoff's? And are you sure
: that the return line is actually physically present (insuring that there is
: no broken wire, bad solder joint, etc)? A printer will act exactly as you
: describe if the Xon/Xoff characters aren't reaching the DTC.
 
: Wirt Atmar
 
Also check that the number of data bits, start/stop bits and parity
are the same for the system and the printer.  I've seen multiple cases where
one had been set for odd and another for even parity or no parity...  and
 
 Xoff=#17=$11=00010001(even parity)=10010001(odd parity)
 Xon =#19=$13=10010011(even parity)=00010011(odd parity)
 
if your printer sends Xoff w/ parity bit and 3000 uses 8 bits no parity...
you see, Xoff would be seen as char(91) i.e. "["... likewise, an Xon sent
with even parity to a recepient w/ no parity would yield to chr(93) or "]".
 
Cheers,
Eero - HP CSY.