Programming instructions

Intermec Fingerprint v7.61 – Programmer’s Reference Manual Ed. 7 49

Chapter 2 Program Instructions

COMSET ON

Field of Application

Statement emptying the buffer and turning on background data

reception on the speciﬁ ed communication channel.

Syntax COMSET<nexp>ON

<nexp> is one of the following communication channels:

1 = "uart1:"

2 = "uart2:"

3 = "uart3:"

4 = "centronics:"

5 = "net1:"

6 = "usb1:"

Remarks

This statement is closely related to COMSET, ON COMSET GOSUB,

COMSTAT, COMSET OFF, COM ERROR ON/OFF, and COMBUF$. It

allows you to open any of the communication channels for background data

reception with an empty buffer, provided the communication parameter for

the channel has already been set up by a COMSET statement.

When the reception has been interrupted by the reception of an end

character, an attention string or the max. number of characters, the

buffer can be emptied and the reception reopened by issuing a new

COMSET ON statement.

Example

In this example, the COMSET ON statement on line 30 is used to open

"uart1:" for background reception. After the buffer has been read, it is

emptied and the reception is reopened by a new COMSET ON statement

in the subroutine on line 2020:

1 REM Exit program with #STOP&

10 COMSET1,"#","&","ZYX","=",50

20 ON COMSET 1 GOSUB 2000

30 COMSET 1 ON

40 IF A$ <> "STOP" THEN GOTO 40

50 COMSET 1 OFF

.....

1000 END

2000 A$= COMBUF$(1)

2010 PRINT A$

2020 COMSET 1 ON

2030 RETURN