Contents, cont'd. - Intermec

BUSY
Chapter 2 Program Instructions
Field of Application Statement ordering a busy signal, e.g. XOFF, CTS/RTS or PE, to be
transmitted from the printer on the specified communication channel.
Syntax BUSY[]
optionally specifies the channel as:
1 = "uart1:"
2 = "uart2:"
3 = "uart3:"
4 = "centronics:"
Remarks The selected communication protocol usually contains 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 specified communication channel. If no channel is specified, 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 fitted):
10 FONT "Swiss 721 BT"
20 PRTXT "HELLO!"
30 BUSY2
40 PRINTFEED
50
RUN
READY2
Intermec Fingerprint 7.2 – Reference Manual Ed. 3 32