Chapter 4:
Querying the Printer
45
O’Neil Programming Language Reference Manual
Print Job Status Query
Print Job Status Query
Query Format
ESC{Sn?}
Reply Format
{ST!
E
:x;
N
:x;
S
:x;
L
:x;
P
:x;
J
:x;
R
:x;
B
:x}
Function
Verifies data delivered to the printer was printed without any
mechanical errors such as a head jam or an out of paper
condition.
n
indicates the level of error reporting. The end of
the print job is indicated by the Esc e command.
n
is defined
as follows:
bit 0
=Determines auto report status at the end of the job
(when last line/form feed before ESC e is complete).
bit 1
= Determines status if paper was out during printing.
bit 2
= Determines status if there was a printhead jam during
printing.
bit 3
= Determines status when paper is loaded after a paper
out condition and the red button is pressed during printing.
bit 4
= Determines if printer times out during printing.
bit 5
= Determines if forward/reverse buttons were pressed
during printing.
bit 6
= Cancels timeout. Printer always stays on (timeout set
to 9999) but does not write to Flash.
bit 7
= Reserved.
Note 1:
If all zeroes are specified for
n
, any active status
messages set by an ESC s n command without an ESC e
command are cancelled.
Note 2:
Cancelled timeouts are not written to Flash;
therefore, the timeout returns to defaults if the printer is off
or if the power is disconnected.
Note 3:
Timeouts can also be cancelled using the ESC t
command. ESC s 0 or ESC e will not reinstate a timeout
cancelled using the ESC t command.
Reply Example
{ST!
E
:N;
S
:I;
L
:D;
P
:P;
J
:N;
R
:40;
B
:O}
Reply Example
Explanation
ST! - Reply to a print job status query.
E:
N; - There are no syntax/language errors.
S
:I; - The printer is idle.
L:
D; - The paper release lever is down, ready to print.
P:
P; - Paper is present.
J
:N; - There is no head jam.
R:
62; - 62K bytes remain in the input buffer.
B:
O; - Acceptable battery voltage and temperature.
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