Teledyne 7600 - Infrared gas analyzer - communication manual - Manual (Page 38)

Teledyne Analytical Instruments
38
1510 '------------- Data receive ----------------------------
1520 PRINT
1530 LENGTH=LOC(1) 'Number of data in receiving buffer
1540 IF LENGTH=0 THEN PRINT "No answer" :END
1550 PRINT " Receiving data < ";
1560 FOR I=1 TO LENGTH
1570 X$=INPUT$(1,#1) 'Taking data from receiving buffer
1580 CC(I)=ASC(X$) 'Digitizing and storing
1590 PRINT RIGHT$("0"+HEX$(CC(I)),2);" "; 'Displaying on screen
1600 NEXT I
1610 CLOSE #1
1620 COUNT=LENGTH-2
1630 GOSUB *CRC.CALC
1700 '
1710 '------------- Transmission error check -----------------------
1720 PRINT
1730 CRC.L$=RIGHT$("0"+HEX$(CRC.L),2)
1740 CRC.H$=RIGHT$("0"+HEX$(CRC.H),2)
1750 PRINT "CRC calculation = ";CRC.L$;" ";CRC.H$
1760 IF CC(LENGTH-1)<>CRC.L THEN GOTO *ER.MESSAGE
1770 IF CC(LENGTH)<>CRC.H THEN GOTO *ER.MESSAGE
1780 GOTO *PRT.RESULT
1790 *ER.MESSAGE
1800 PRINT "Communication error"
1810 END
1900 '
1910 '------------- Display of result ---------------------------
1920 *PRT.RESULT
1930
1940 PRINT
1950 VALUE=HEX$(CC(4))+RIGHT$("0"+HEX$(CC(5)),2) '2byte Å® 1word
1960 DE$=HEX$(CC(6))+RIGHT$("0"+HEX$(CC(7)),2) '2byte Å® 1word
1970 UN$=HEX$(CC(8))+RIGHT$("0"+HEX$(CC(9)),2) '2byte Å® 1word
1980
1990 Select Case Val("&H"+DE$)
2000 Case 0
2010 CONC=Val("&H"+Value$)/1
2020 Case 1
2030 CONC=Val("&H"+Value$)/10
2040 Case 2
2050 CONC=Val("&H"+Value$)/100
2060 Case 3
2070 CONC=Val("&H"+Value$)/1000
2080 End Select
2090
2100 Select Case Val("&H"+UN$)
2110 Case 0
2120 UNIT="vol%"
2130 Case 1
2140 UNIT="ppm%"