Asynchronous Status Reporting - Teledyne 400E Instruction Manual

Model 400E Ozone Analyzer
Instruction Manual
Variable, Message, and Other Names
Some commands allow you to access variables, messages, and other items, such as
iDAS data channels, by name. When using these commands you must type the
entire name of the item; you cannot abbreviate the names.

6.10.4. Asynchronous Status Reporting

Asynchronous repo rting of status messages as an audit trail is one of the two
principal uses for the RS-232 interface (the other is the command line interface for
controlling the instrument). You can effectively disable the asynchronous reporting
feature by setting the interface to quiet mode, see Section 6.10.4.
Asynchronous reports include iDAS reports, warning messages, calibration and
diagnostic status messages. Refer to Appendix E for a list of the messages, and
Section 6.11.3 for information on controlling the instrument via the RS-232
interface.
6.10.4.1. General Message Format
All messages output from the instrument (including those output in response to a
command line request) have the format:
X DDD:HH:MM [Id] MESSAGE<CRLF>
WHERE:
X à Command Type Designator: A single character indicating the message type,
as shown in the table below.
DDD:HH:MM à TIME STAMP: The The Date and Tim the message was issued. The
Day-of-year (DDD) as a number from 1 to 366, the hour of the day (HH) as a
number from 00 to 23, and the minute (MM) as a number from 00 to 59.
[ID] à MULTIDROP ADDRESS DESIGNATOR: The 4-digit Multidrop instrument ID
number.
MESSAGE à MESSAGE CONTENT: May contain warning messages, test
measurements, iDAS reports, variable values, etc.
<CRLF> à END OF LINE: A carriage return-line feed pair always terminates the
message.
The uniform nature of the output messages makes it easy for a host computer to
parse them into a relatively easy to read structure.
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Operating Instructions
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