Metrohm 751 GPD Titrino - Manual (Page 188)

3.3 Properties of the RS 232 Interface
751 GPD Titrino
185
3.3.3 What can you do if the data transfer does not work?
Problem Questions for remedial action
No characters can be received on
a connected printer.
- Are the instruments switched on and cables plugged in
correctly?
- Is the printer set to ”on-line”?
- Are baud rate, data bit and parity the same on both
instruments?
- Is the handshake set properly?
If everything seems to be ok, try to print a report with the key
sequence <PRINT><SMPL DATA><ENTER>. If this report
is printed out correctly, check if reports are defined in key
<DEF>.
No data transmission and the
display of the Titrino shows an
error message.
- error 42: Transmission error. Is the printer set to "on-line"?
Is the connection cable properly wired?
- error 43: Data output of the Titrino disabled for longer than 6
s by XOFF.
- error 36-39: Receive error. Are the RS settings the same on
both devices?
The received characters are
garbled.
- Are the RS settings the same on both devices?
- Has the correct printer been selected?
- Data transfer has been interrupted on the hardware side
during the printout of a curve. Re-establish connections and
switch printer off/on.
Wrong line spacing. The printer does not emulate completely the preset mode.
Usually these problems arise with the IBM mode. Set the printer
to a different mode (e.g. Epson).
Printout of titration curve is not
ok. Other reports are printed ok.
Handshake is necessary for the printout of curves.
- Is your cable correctly wired? (The DTR of the printer has to
be connected to the CTS of the Titrino.)
- Set "HWs" for the handshake of the Titrino. Configure the
printer such that its DTR is set (possibly with DIP switches).