Measurement Computing Digital232 - Manual (Page 59)

Appendix C IBM PC Interfacing
C.1
IMB PC Interfacing
10 REM *** DUMB TERMINAL PROGRAM FOR THE Digital232
15 REM *** Running under IBM basica
20 REM *** This program allows direct interaction between the
25 REM *** IBM-PC and digital I/O devices through the Digital232.
30 REM *** Make sure the Digital232 is configured for its factory
35 REM *** default conditions, described in Section 2 of this manual.
40 REM ***
45 REM *** IOtech, Inc., P.O.Box 21204,
50 REM *** Cleveland, Ohio 44121 (440) 439-4091
60 CLS
70 REM *** Set communications parameters of COM1 port
80 OPEN "COM1:9600,N,8,2,cs,ds" AS 1
90 REM *** Display characters from COM1
100 IF LOC(1) THEN PRINT INPUT$(LOC(1),1);
110 REM *** Transmit any available characters from the keyboard
120 K$=INKEY$
130 PRINT #1,K$;: PRINT K$;
140 GOTO 100
Wiring Diagram for interfacing the Digital232 to an IBM PC
note: if the Xon/Xoff mode is enabled, then CTS pin 4 of the Digital232 must be
connected to +Vtest pin 9.