Zebra Technologies TTP 7030 - Manual (Page 57)

57 Programming
Status Reporting Commands
10/05/2009 TTP 7030™ Technical Manual P1003636-002
A status enquiry command can only return one status code at a time. If there are two or more
simultaneous errors, each error condition should be cleared and the status enquiry repeated in
order to get a complete report of all status codes
The host computer cannot be certain that all error conditions have been cleared until an
ACK
is
received.
The possible error conditions are reported in the above order.
This command requests a paper-near-end sensor (paper low) status from the printer in a 1-byte
format.
Note • Errors 02, 05 and FF are terminal faults that require you to reset the printer before it
will be operable again. The printer automatically recovers from the other error conditions as
soon as the error is corrected.
Note • If you want to read out all status information directly, use <ESC><ENQ>E.
ESC ENQ 002
Paper-near-end Enquiry
1B 05 02 hex
27 5 2 decimal
Value = 1 indicates “No paper”
Value = 0 indicates “Paper present” at the sensor position
Note • The status of the sensor is sampled every time the printout is cut. If three succeeding
samples show "no paper", the status reply changes to 00. This is to prevent false alarm if the
side of the paper roll is not clean. If you want the current status of the sensor, use
<ESC><ENQ><6>
and extract the paper-near-end bit.