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Job Request ––––––––––––––––––––––––––––––––––––––––––––––––
A Job Request returns status information about the most
recently processed print job. You can send a job request after
an ENQ or batch. You can send two levels of Job Requests:
✦
Numeric Error Codes Only (0, 1, or 2)
✦
Verbose (3 or 4)
Syntax {J,#}
Field Type Valid Options Description
Identifier J
Job Status Request
request#
0
1
2
3
4
Returns ASCII coded strings or
numeric error codes
Returns error number
Returns number of labels printed in batch
Example {J,3}
The job response may not be immediate. If the printer has an
error (out of supplies, ribbon problem, etc.), is in pause mode,
or has insufficient memory, correct the problem and then
resend the job request. If the problem is not corrected, no
response is returned. If a formatting error has occurred, the
job request will return the status. The printer must first
interpret the format and batch data before returning the
response.
To clear an error, press the trigger (or
E
depending on
your printer). An ENQ can also clear errors numbered less
than 500. Once the error is corrected, a job request can be
sent. The printer cannot accept another job request until the
error is resolved.
Chapter 7. Status Polling
7-7