User manual

APOS Premium Printer Series User Manual Page 85 /136 Reference: FDE 3107312 Issue A
S
ELECT OR CANCEL UNSOLICITED STATUS MODE (USM)
Selects whether the printer is to automatically return a 4 bytes status string whenever the status changes.
ASCII
GS a n
Hexadecimal 1D 61 n
Decimal
29 97 n
Value of n
0 turns mode off
Any non-zero value turns mode on
Default
n = 0 (USM disabled)
Byte 1 = Printer information
Byte 2 = Error information
Byte 3 = Paper information
Byte 4 = Paper information
This command uses the same sequence as older ASB (Auto Status Back) but has the following differences:
The parameter n is an on/off switch. It does not select trigger subset
There is no immediate return when this mode is turned on
Any change in any of the following conditions will trigger the USM response
Receipt Cover
Knife Error
Out of range Print head Temperature
Out of range Voltage
Paper exhaust Status
Flow Control
Paper Feed Button Status
CDKO Status