Instruction manual

A758 Owner’s Guide Chapter 7: Programming Guide
September 1999 195
The three high order bits of each byte mark the character type. The characters can
be marked in three ways: check serial # character, account # character, or “skip
this character or symbol.”
The five low order bits of each byte contain the number of characters of that type
to extract. Most exceptions will not need to use all six bytes; in that case clear the
unused bytes to zero.
Bits within Byte
76543210
check serial # character string 0 0 1 n n n n n
account # character string 0 1 0 n n n n n
character string to ignore 1 0 0 n n n n n
Example 1
t123456780t12349876543210o 1234 is the check serial #
9876543210 is the account #
To load the second table entry, which starts at word 25, the transit number
123456780 would be stored in the first two words of its table entry using this
string of commands:
0x1B 0x73 0x12 0x34 25
0x1B 0x73 0x56 0x78 26
After the right transit symbol are immediately the four characters of the check
serial #, followed immediately by the ten characters of the account number. These
would be bitwise encoded as:
0 0 1 0 0 1 0 0 (check #, four characters)
and 0 1 0 0 1 0 1 0 (account #, 10 characters)
then stored in the other three words of the table entry using:
0x1B 0x73 0x24 0x4A 27
0x1B 0x73 0x00 0x00 28
0x1B 0x73 0x00 0x00 29
Example 2
t22137-632t001 6042202o927540 2754 is the check serial #
6042202 is the account #
To load the third table entry, which starts at word 30, the transit number 2137-
632 would be stored in the first two words of its table entry using this string of
commands:
0x1B 0x73 0x22 0x13 30
0x1B 0x73 0x76 0x32 31
After the right transit symbol are four characters to skip, a seven digit account
number, two characters to skip, and finally a four digit check serial #. The final
character to skip need not be encoded. These would be bitwise encoded as:
1 0 0 0 0 1 0 0 (skip four characters)
0 1 0 0 0 1 1 1 (account #, seven characters)
1 0 0 0 0 0 1 0 (skip two characters)
0 0 1 0 0 1 0 0 (check #, four characters)
then stored in the other three words of the table entry using:
0x1B 0x73 0x84 0x47 32
0x1B 0x73 0x82 0x24 33
0x1B 0x73 0x00 0x00 34.