NCR 7197 II SERIES - Unsolicited Status Update Validation

7197 Series II Owner’s Guide Chapter 6: Commands
August 2011
148
Unsolicited Status Update Validation
.
Determine if Device Supports USU
The Host uses this command to determined if the device supports USU
ASCII:
GS a x
Hexadecimal:
1D 61 x
Decimal:
29 97 x
Value o f x
0 - FF
Response To Host (Hex): 1A, 9F, 1F
If the printer responds to the Unsolicited Status Update Validation message with this 3-byte
response message, then the printer firmware supports the Unsolicited Status Update messages. If
there is no response, or the printer responds with some other sequence of bytes, then the printer does
not support the Unsolicited Status Updates messages.
Enable / Disable Unsolicited Status Update
Tells the printer to start or stop reporting Unsolicited Status Updates.
ASCII:
GS US n
Hexadecimal:
1D 1F n
Decimal:
29 31 n
Value of n
0 or 1
Where n defines the action to be taken by the firmware.
n = 0 – Tell the printer to stop sending Unsolicited Status Updates to the host.
n = 1 – Tells the printer to start sending Unsolicited Status Updates to the host upon change of a
sensor or state.