NCR 7156, Руководство пользователя

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7156 Owner’s Guide Chapter 6: Commands
September 1997 89
Notes
When DTR/DSR RS232C communications handshaking control is selected, the printer
transmits the one byte response only when the host signal DSR indicates it is ready to
receive data.
When XON/XOFF RS232C communications handshaking control is selected, the printer
transmits the one byte response regardless of the host signal DSR.
When Auto Status Back (ASB) is enabled using the Enable/Disable Automatic Status Back
command (1D 61), the status transmitted by this command (Transmit Status) and the ASB
status must be differentiated according to the information found in “Recognizing Data
from the Printer,” (in the “Real Time Commands” section later in this chapter).
The status bytes to be transmitted are described in the following three tables.
Printer Status ( n = 1 or n = 49)
Bit Off/O
n Hex Decimal Status for Transmit Status
0 Off
On 00
01 0
1 Receipt paper adequate.
Receipt paper low.
1 Off
On 00
02 0
2 Receipt paper adequate.
Receipt paper low.
2 Off
On 00
04 0
4 Receipt paper present.
Receipt paper exhausted.
3 Off
On 00
088 0
8 Receipt paper present.
Receipt paper exhausted.
4 Off 00 0 Not used. Fixed to off.
5 Off
On 00
20 0
32 Slip leading edge sensor: paper present.
Slip leading edge sensor: no paper.
6 Off
On 00
40 0
64 Slip trailing edge sensor: paper present.
Slip trailing edge sensor: no paper.
7 Off 00 0 Not used. Fixed to off.
Cash Drawer Status ( n = 2 or n = 50)
Bit Off/O
n Hex Decimal Status for Transmit Status
0 Off
On 00
01 0
1 One or both cash drawers open.
Both cash drawers closed.
1 Off
On 00
02 0
2 One or both cash drawers open.
Both cash drawers closed.
2 - - - Undefined
3 - - - Undefined
4 Off 00 0 Not used. Fixed to off.
5 - - - Undefined
6 - - - Undefined
7 Off 00 0 Not used. Fixed to off.
Slip Paper Status (
n = 3 or n = 51)
Value of Byte
Returned Slip Status