A4.3
Character 1 - Defines uniquely the start of the data frame.
Character 2 - Mode character. Shows which mode the analyser is in.
o - display is showing oxygen value.
v - display mode, used for displaying parameter values.
p - operator mode, used for changing parameter values.
Characters 3-9 - Oxygen value with polarity sign.
Character 10 - Space.
Characters 11, 12 - Parameter number. This is used when parameters are being
displayed or changed.
Character 13 - Comma (changes to a semi-colon when the analyser is in
display or operator mode).
Characters 14-20 - Parameter value with polarity sign. This is the value associated
with the parameter number.
Character 21 - Space.
Characters 22-25 - Status of the 16 alarm functions.
Character 26 - Space.
Characters 27, 28 - Checksum. Used internally by the 1100A.
Character 29 - Carriage return.
Character 30 - Line feed.
Consecutive data frames are output without a break, ie the start character immediately follows the
line feed of the previous data frame.
ALARM STATUS
Each of the four characters gives the status of four alarms. eg: the first alarm character (character
22) gives the status of alarm numbers 93, 92, 68, 67 with 0110067X and 0110068X software or
68, 67, 41, 40 with 0110066X software, see following table.
These four alarms are given the decimal numbers 8, 4, 2, 1, respectively.
When an alarm condition exists this number is output. If more than one alarm condition is present
then the numbers are summed.
The actual alarm status character is the hexadecimal number equivalent to the decimal number.
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