Programming instructions

Intermec Fingerprint v7.61 – Programmer’s Reference Manual Ed. 734
Chapter 2 Program Instructions
BUSY
Field of Application Statement ordering a busy signal, for example XOFF, CTS/RTS, or
PE, to be transmitted from the printer on the specifi ed communication
channel.
Syntax BUSY[<nexp>]
<nexp> optionally specifi es the channel as:
1 = "uart1:"
2 = "uart2:"
3 = "uart3:"
4 = "centronics:"
Remarks
Communication protocol usually contain some “busy” signal, which
tells the host computer that the printer, for some reason, is unable to
receive data.
The BUSY statement allows you to order a busy signal to be transmitted
on the specifi ed communication channel. If no channel is specifi ed, the
signal will be transmitted on the standard OUT communication channel,
see SETSTDIO statement.
To allow the printer to receive more data, use a READY statement.
For the optional "centronics:" communication channel, BUSY/READY
control the PE (paper end) signal on pin 12 according to an error-trapping
routine (BUSY = PE high).
Example You may, for example, want to prevent the printer from receiving more data
on "uart2:" during the process of printing a label (running this example
requires an optional interface board to be fi tted):
10 FONT "Swiss 721 BT"
20 PRTXT "HELLO!"
30 BUSY2
40 PRINTFEED
50 READY2
RUN