SERVOPRO NOx Analyzers Page
ERROR HANDLING
It is possible that an unknown instruction is sent, the analyzer is busy with a function that is not
the desired one, or an error occurred in the command parameters. The table below provides a
summary of all errors that can appear upon any master instruction.
Error Code Explanation
???? f Analyzer does not recognize the instruction sent.
xxxx f BS Analyzer is busy with another function.
xxxx f SE Syntax error within command parameters or incomplete command.
xxxx f NA Requested function or data not available.
xxxx f DF Data error: The kind or number of given parameters not valid.
xxxx f OF Offline. The analyzer is offline, in local mode. Only inquiry commands
and SREM (set analyzer in Remote Mode) are allowed.
NOTES:
1. f is the Error Status byte.
2. xxxx is the function code of the command being sent.
GENERAL AK REQUIREMENTS
1. If the command message contains no error, the Acknowledge message contains the echo
of the Function code and the Error Status number (0 to 9).
2. If the transfer was faulty or the function code is unknown, the answer contains four
question marks (for example, ???? 0).
3. If the displayed value is not valid, a # symbol is placed in front of the measured value
(for example, AIKG 0 #9999).
4. If a control or adjusting command is sent via the serial interface while the device is in
Manual mode,
it sends an answer like SLIN 0 K0 OF.
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