Programming Codes iTherm
®
280 Programmer’s Guide
28-04430 Rev K Page 173
[ENQ] <15> Inquire printer state
ASCII [ENQ] <15>
Hexadecimal 05H 11H
Decimal <5> <15>
Function The [ENQ] <15> command returns the current printer state
Note [ENQ] <17> also returns the current printer state, but it should not be
used as it conflicts with XON/XOFF flow control.
Response [ACK] <15> <n> <r
1
> <r
2
>…
Where <15> is the echo of the command ID.
<n> is the number of return bytes + 40 (28H)
(to prevent confusion with XON/XOFF).
<r
1
>: bit 0 = 1 always
bit 1 = Cover is closed.
bit 2 = Receipt paper is out.
bit 3 = 0
bit 4 = Printer is waiting in an error mode. Use [ENQ]<22> to identify the
specific error and [ENQ]<10> to recover
bit 5 = 0
bit 6 = 1 always
bit 7 = 0 always
<r
2
>: bit 0 - 5 = 0 always
bit 6 = 1 always
bit 7 = 0 always
Note: For this status request to function, the "Buffer Full Only" off-line
option should be selected.
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