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Log Operations (LOG O)
Whenever a system or log event occurs, the Messenger 570 system will write to memory a time-stamped record
of parameters. System events such as system resets, alarm detection, alarm acknowledgments, alarm dial outs,
etc. are automatically logged. Log events are logged at the periodic log rate if periodic logging is enabled.
(See LOG S.) When the data log becomes full, the overload data will wrap around and erase previous data
without any alarm or warning. It is up to the operator to set the log-time interval so that it will be possible to
download the logged data before the data logger becomes full.
Data Extraction and Analysis
Data from the Messenger 570 system can be downloaded in a readable format or in a file format compatible
with most spreadsheet and data analysis programs. Select the desired format with the LOG O command.
COMMAND>LOG O
DATALOG OPERATIONS
======= ==========
1 = Display uncompressed periodic log in ASCII.
2 = Download uncompressed periodic log using X-modem.
3 = Download compressed periodic log using X-modem.
5 = Display data log configuration.
0 = Previous Menu
Choose a Number>
Uncompressed Log Format
All uncompressed records contain comma-delimited ASCII fields. The following format is used for all
uncompressed records received from the data logger.
REC,MM/DD/YY hh:mm:ss.s, Reserved, XIN, A1, A2, A3, A4, A5, A6, A7, A8, O1, O2, O3, O4 [,O5, O6, O7, O8]*
REC Record type.
MM/DD/YY Month / Date / Year
hh:mm:ss.s Hour: Minute: Second
Reserved Reserved (Old Ack ID field.)
XIN Extended Inputs (a decimal representation)
A1-A8 Analog input 1 through 8. Each input value is in engineering units. Un-logged
inputs are represented by comma-separated null fields.
O1-O8 Digital outputs 1 through N.
* Only the outputs that are physically present on a unit will be in the log.
Record Type is a three-character field that describes the nature of the log entry:
ACK Acknowledged alarm
ALM An alarm condition occurred
DOF An alarm dial-out has failed
DOS An alarm dial-out has succeeded
HKR (Hacker) Too many bad passwords entered
LOG A time-initiated recording
MFL The modem has failed power-up diagnostics
NRM An alarm condition returned to normal
OFF The end of an on-line session
ON The beginning of an on-line session
POW A power failure alarm has occurred
RST Hardware reset
TFL A real-time clock failure has occurred