Article: Q31432
Product(s): See article
Version(s): 2.00 2.01 3.00 4.00 4.00b 4.50
Operating System(s): MS-DOS
Keyword(s): ENDUSER | B_BasicCom | mspl13_basic
Last Modified: 21-DEC-1989
When you get run-time error 24, "device timeout," you need to
specify a greater time limit for CS (Clear To Send) and DS (Data Set
Ready) in the OPEN statement.
The default for CS and DS is 1000 milliseconds or one second. This
value can range from 0 to 65535. If zero is specified, the status is
not checked.
This information applies to all versions of QuickBASIC and to the
Microsoft BASIC Compiler Version 6.00 for MS-DOS and OS/2.
The following code will give a device time-out error if Clear to
Send or Data Set Ready are not detected after two seconds:
OPEN "COM1:9600,N,8,1,CS2000,DS2000" AS #1