Tally Genicom T5023+ Printer User Manual


 
Additional commands (Printer) Status and error messages
T5023/5023+ - Programming Guide 227
Function:
The command CSI n ! t triggers the initiation of an acknowledgement signal to
the computer interface if all the jobs transferred up to this command have been
processed.
For a definite assigning of the acknowledgement signals (also CSI n ! t)tothe
transferred requests, the acknowledgement message contains the same para-
meter value n that the application transferred in the request.
If possible, the command CSI n ! t should be avoided in a transac-
tion as the use of this command can negatively influence the per-
formance of applications. When using CSI n ! t, the following notes
are important.
The request for acknowledgements via CSI n ! t should only occur
at the end of a line or during a function switch-over (for example,
from printing to reading MSR). This corresponds to the printer se-
quencing and does not interfere unnecessarily with the perfor-
mance of the document printer.
The optimal printing path (bidirectional printing) is interrupted by
means of this command.
The order of the acknowledgement messages from the document
printer is the same as the order of the acknowledgement requests.
If an application is working with these acknowledgement cycles, it
should not wait for the respective acknowledgement signal, but im-
mediately transmit further print data. Subsequently, the response
can be evaluated..
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