Omega Engineering CN8260 Clock Radio User Manual


 
CN8240 & CN8260 Series Communications & Options
8
Digital
Communications Option
Numeric Value ASCII Representation
3 3.0000
000003
003.00
100 100.00
0100.0
000100
3.2 003.20
0003.2
Examples of valid numeric representations for a 6 character data field:
Numeric Value Bad ASCII Representation Why?
3 BBBBB3 Leading blanks
are not allowed.
3.0BBBB Trailing blanks
are not allowed.
3.2 -3.20000 ‘-’ is not allowed.
Examples of invalid numeric representations for 6 character data field:
(B represents a blank, or a space, character)
CHKSUM
This is a two character Message Code Numbering System, representing the sum of all the ASCII values of all the
characters (excluding the START, CHAR, the END CHAR, and the CHKSM themselves) in the message. The sum
is computed using the following formula:
CHKSM = SUM(All Message Characters)%256
% represents the modulus operator.
END CHAR
This is a single character designating the end of the message. For all messages, the character used is <CR>, the
carriage return.
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