OPW M00-051.00 FSC3000, Command-Line Configuration Manual

Page: 173 / 181

Calculating a Checksum
The following BASIC program can be used to determine the checksum for a line of data:
10 CHKSUM% = 0
20 TRANSACTION$ = “LINE OF DATA 0123456789”
30 NUMCHARS% = LEN (TRANSACTION$)
40 FOR INDEX% = 1 TO NUMCHARS%
50 SINGLECHAR$=MID$ (TRANSACTION$, INDEX%, 1)
60 CHKSUM% = CHKSUM% + ASC (SINGLECHAR$)
70 NEXT INDEX%
80 TEMP$ = STR$ (CHKSUM%)
90 TEMP$ = RIGHT$ (TEMP$,2)
100 PRINT TEMP$
110 END
ASCII Character Table
Decimal
Value ASCII
Char Decimal
Value ASCII
Char Decimal
Value ASCII
Char Decimal
Value ASCII
Char
032 space 056 8 080 P 104 h
033 ! 057 9 081 Q 105 i
034 " 058 : 082 R 106 j
035 # 059 ; 083 S 107 k
036 $ 060 < 084 T 108 l
037 % 061 = 085 U 109 m
038 & 062 > 086 V 110 n
039 ' 063 ? 087 W 111 o
040 ( 064 @ 088 X 112 p
041 ) 065 A 089 Y 113 q
042 * 066 B 090 Z 114 r
043 + 067 C 091 [ 115 s
044 , 068 D 092 \ 116 t
045 - 069 E 093 ] 117 u
046 . 070 F 094 ^ 118 v
047 / 071 G 095 _ 119 w
048 0 072 H 096 ' 120 x
049 1 073 I 097 a 121 y
050 2 074 J 098 b 122 z
051 3 075 K 099 c 123 {
052 4 076 L 100 d 124 |
Doc. No.: M00-051.00 Rev.: 10
Page 173 of 181