Metrohm 788 IC Filtration Sample Processor - Manual (Page 140)

5 Interfaces
788 IC Filtration Sample Processor
132
5.2.10 RS232 error rectification
Problem Questions for corrective action
No characters can be re-
ceived on an attached
printer.
Ÿ Are the devices switched on and the connecting cables
plugged in properly?
Ÿ Is the printer set to ”on-line”?
Ÿ Do the baud rate, data bits and parity for the two devices
have the same setting?
Ÿ Is the handshake set properly?
If everything appears ok, try to print out a report by pressing the
<PRINT> key.
No data transmission oc-
curs and an error message
appears in the display of
the 788 IC Filtration Sam-
ple Processor. Ÿ RS error 36} } } }39: Receive errors.
Do the RS232 data transmission parameters of the two de-
vices have the same setting?
Ÿ RS error 40} } } }42: transmission errors.
Is the cable used correctly wired and plugged in?
Is the printer switched on and set to ”on-line”?
Ÿ RS error 43: Data output of the 788 IC Filtration Sample
Processor blocked for longer than 3 s by XOFF.
The received characters
are garbled. Ÿ Do the data bits and parity of the two devices have the same
setting?
Ÿ Does the baud rate of the two devices have the same setting?
Ÿ Is the correct printer selected?
Ÿ The data transfer has been interrupted by the hardware during
a printout. Set up connections again, switch printer off then
on.