Interfaces - TallyGenicom T2150 Reference Manual

Reference manual

Interfaces

Interfaces
Your matrix printer offers the possibility of operating either via a parallel
or via a optional serial interface. This appendix informs you about the
parallel Centronics compatible interface and the serial interface type
RS232C/V.24 and describes the communication between your computer
and the printer.
These interfaces are linked to form a so-called shared interface. Your
printer can be configured to use only one interface or both alternately.
When only one interface is used, it is monitored by the printer. If the
printer is configured to use both interfaces simultaneously it monitors
both interfaces for incoming data. As soon as the printer recognizes a
signal it switches to the respective interface and sends the BUSY signal
to the other interface. After finishing the data transmission, the printer
remains switched to the interface for a certain period of time (30 se-
conds). When this time has elapsed, the controller reenables both
interfaces and the sequence described restarts. If incoming data is on
the other interface and the current print position is not "Top of Form", a
form feed is carried out.
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PRINT
BACK QUIT
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