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Epic 880
TM
Extended Printer Control
100-88002 Rev B Page 237
Recovery from Mechanical Errors
The TransAct 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. (for example, clear a paper jam)
When the operator indicates that the problem has been corrected, the host can issue
a 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, i.e. the status responses will reflect the state of the system
when the fault occurred.
There are errors that cannot be reported to the host system. These errors are such
that the integrity of the printer do not allow continued operation. That is there is no
way to report the error. These errors occur (for the most part) during power up
diagnostics. They are as follows:
EEPROM READ ERROR Power up only
The Internal EEPROM is not readable or the check sum is bad.
Pressing the Power Button will attempt to rewrite the configuration information. This
may leave the printer configured incorrectly.
EEPROM WRITE ERROR Power up/down and Configuration only
The Internal EEPROM is defective. There is no recovery.
SOFTWARE ERROR VECTOR Can occur at any time.
These errors can occur during operation. They signal a serious problem with the
system. In most cases this error will also generate a Watch Dog reset. A power cycle
will generally recover normal printer operation. An ESD event or a firmware bug
generally causes these errors. The printer maintains an error log, this log contains
additional information about the fault and is printed during manual configuration. The
information in this log should be reported to TransAct to identify the exact cause of the
fault.
USERSTORE FORMAT ERROR Power up or User Store Write Operations
The User Store data in FLASH has an invalid format. Pressing the Power Button will
erase the user store and reformat it. This can be caused by a firmware update.
FLASH WRITE ERROR Power up or User Store Write Operation.
The Program Flash has failed. There is no recovery from this error.
COM ADAPTER ERROR Power up only
The communications interface card is not supported by the firmware or is missing.
There is no recovery.