LMI Technologies Gocator 2130, User Manual, Page: 522 / 652

Gocator Line Profile Sensors: User Manual
Protocols • 523
The Data channel is used to receive and poll for measurement results. When the sensor receives a Result
command, it will send the latest measurement results on the same data channel that the request is
received on. See
Data Channel on page 527 for more information.
The Health channel is used to receive health indicators (see Health Channel on page 529).
Command and Reply Format
Commands are sent from the client to the Gocator. Command strings are not case sensitive. The
command format is:
<COMMAND><DELIMITER><PARAMETER><TERMINATION>
If a command has more than one parameter, each parameter is separated by the delimiter. Similarly, the
reply has the following format:
<STATUS><DELIMITER><OPTIONAL RESULTS><DELIMITER>
The status can either be "OK" or "ERROR". The optional results can be relevant data for the command if
successful, or a text based error message if the operation failed. If there is more than one data item,
each item is separated by the delimiter.
The delimiter and termination characters are configured in the Special Character settings.
Special Characters
The ASCII Protocol has three special characters.
Special Character Explanation
Delimiter Separates input arguments in commands and replies, or data items in results. Default value is
",".
Terminator Terminates both commands and result output. Default value is "%r%n".
Invalid Represents invalid measurement results. Default value is "INVALID"
Special Characters
The values of the special characters are defined in the Special Character settings. In addition to normal
ASCII characters, the special characters can also contain the following format values.
Format Value Explanation
%t Tab
%n New line
%r Carriage return
%% Percentage (%) symbol
Format values for Special Characters
Command Channel
The following sections list the actions available on the command channel.