TransAct POSJET 1500, Руководство программиста

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Programmer's Guide POSjet
®
1500 Codes and Commands
Nov-07 Rev M Page 83
The error indicator is the primary fault indicator. It is always on or blinking if a fault has occurred.
Three types of faults exist
•
Fully-recoverable faults
Paper out or cover open
•
Semi-recoverable faults Head Jam
•
Non-recoverable faults Component failure
Fully-recoverable
A fully-recoverable error will restart printing exactly where it stopped when the error occurred. Printing will resume
after error has been properly addressed. A semi-recoverable error is very similar to a fully-recoverable error.
Additionally, status is used to display when the printer consumables may need replacing.
Semi-recoverable
A semi-recoverable error is determined by whether or not the printer has to be shut off and turned back on while
attending to the problem. The amount of information lost is dependent on the type of error and the state of the
information being processed.
Non-recoverable
A non-recoverable error likely produces information loss.
If during normal operation, the
indicator is lit and the indicator is blinking, a minor error occurred.
The indicator shows the error by blinking a pattern. Pressing the * Button restarts the printer. Blink patterns
are defined as follows.
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1 Blink (1 blink, pause)
__ __________________ ______
2 Blink (2 blinks, pause)
__ __ _______________
__
___
3 Blink
(3 blinks pause)
__ __ __ ___________
__
__ _
Recovery from Errors
The Ithaca Inquire commands and the Epson [DLE][ENQ] and [DLE][EOT] commands allow most printer error
status to be read and in some cases recovery attempted. Paper jams and auto-cutter faults can be recovered,
however, any data not previously printed will be lost.
If the application is to support error recovery, the application should use the appropriate status request commands to
query the printer periodically. If an error response is such that the fault is recoverable, the host application should
interact with the operator and request that the fault be corrected. An example of this process is to “Clear Paper
Jam”. When the operator indicates that the problem has been corrected, the host can issue a printer reset request.
If a serious error occurs, the printer will halt and enter fault error mode. If the fault is such that the printer can
maintain communications with the host, the print status request and response system will remain active. The status
of the system will however remain static. That is the status responses will reflect the state of the system when the
fault occurred.
Non-Reportable Error
8
The blink rate is effected by the data received. The faster the data, the faster the printer blinks.