Thermo Scientific 5028i Instruction Manual page 321

Thermo Fisher Scientific
Sample Data Reply String in response to Data Query Command
(DA):
In response to a valid data query command, the instrument responds in
the following format:
<STX>MD09<SP><address><SP><measured
value1><SP><status><SP><SFKT><SP><address+1><SP><measured
value2><SP ><status><SP><SFKT><ETX><BCC>
The response uses the same command terminators as used by the
received command, i.e. if the received command was terminated with a
<CR> then the response is terminated with <CR>, and if the command
was terminated with a <ETX><BCC>, then the response is terminated
with<ETX> and the computed checksum <BCC>.
The 09 after the MD indicates that nine measurements are present
in the reply string, 10 for ten measurements and so on. This will also
determine the length of the reply string.
<address> is the Instrument Address. Each subsequent measurement
attached to the response will have the <address + X>, where X keeps
incrementing by 1 for each measurement included.
<measured value> is the concentration value in currently selected gas
units, represented as exponential representation with 4 characters
mantissa and 2 characters exponent, each with sign.
Mantissa: sign and 4 digits. The decimal point is assumed to be after the
first digit and is not transmitted.
Exponent: sign and 2 digits.
Example:
-5384000.0 is represented as -5384+06
+0.04567 is represented as +4567-02
<status>: is formed by < operating status > and < error status > and
separated by a space, i.e.:
<operating status><SP><error status>
Each of the two (<operating status> and <error status>) are formed by
two characters, each representing a 2 digit hex number which is one
byte (8 Bits) operation status and one byte (8 Bits) error status.
These two bytes contain the information about the main operating
conditions of the instrument at that instant. For details on how to
interpret the status bytes, refer to
<SFKT>: is the space provided for future use for special function. It
currently contains a string of ten 0's, i.e. <0000000000>.
Gesytec (Bayern-Hessen) Protocol
Table D–1 and Table D–2
Model 5028i Instruction Manual
Gesytec Commands
below.
D-5