TallyGenicom 2440, Руководство пользователя

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Serial interface (option) Interfaces
B-12
Serial Interface Error Handling
The serial interface recognizes the following errors:
•
Parity Error
•
Framing Error
•
Buffer Overrun
Parity Errors:
When a parity error is detected, printer will indicate warning status on the lights Printer
continues to receive data.
Framing Errors:
When a framing error is detected, printer will indicate warning status on the lights. Printer
continues to receive data.
Buffer Overrun Errors:
Buffer overrun errors occur when PC does not obey the selected protocol and continuous
to send data when Printer cannot accept any more data. The buffer on Printer overflows
if PC sends more than 1024 bytes of data after the interface signals that it is “Busy”. The
result is lost data, since there is no way to make PC stop sending data. When a parity error
is detected, printer will indicate warning status on the lights.