HEIDENHAIN NPD 281 v.3 - Manual (Page 34)

34
RS-232-C/V.24 Interface (X31)
187 + (11 • number of blank lines)
baud rate
Signal transit times for measured value output after “Ctrl B”
BASIC program for measured value output with “Ctrl B”
10 L%=17
20 CLS
30 PRINT "V.24/RS-232-C"
40 OPEN "COM1:9600,E,7" AS#1
50 PRINT #1, CHR$ (2);
60 IF INKEY$<>""THEN 130
70 C%=LOC(1)
80 IF C%
90 X$=INPUT$(L%,#1)
100 LOCATE 9,1
110 PRINT X$;
120 GOTO 50
130 END
t
1
t
2
Ctrl B
t
D
t
3
Ctrl B
Measured value output after signal “STX” (Ctrl B)
If the display unit receives the control character STX (Ctrl B)
over the RS-232-C/V.24 interface (X31), it outputs the current
measured value over the interface.
➤ ➤ ➤ ➤ ➤ Transfer the control character Ctrl B over the RXD line of
the RS-232-C/V.24 interface (X31).
Characteristic times for measured value output
Process Time
Storage delay t
1
≤
1 ms
Measured value output after t
2
≤
22 ms
Regeneration time t
3
≥
0
These times are prolonged if functions are active
(for example, series of measurements with DIFF
value display).
Duration of measured value transfer
t
D
= [s]