Owner's manual

Appendix A. Server and Device
Operational Statistics Tables
The LoggerNet server and devices in the network map maintain statistics that
help to describe their operation. These statistics are made available to the
clients in a collection of tables associated with a special data broker of type
“__Statistics__”. The LoggerNet server guarantees that there is only one data
broker of this type available.
Each device in the network map is represented by two tables in the Statistics
data broker. The names of the tables are the result of appending the strings
“_hist” and “_std” to the device name. The network controller also maintains
statistics regarding the operation of the server in general. The statistics are
available in the “__LgrNet___controller__” table.
A.1 Device History Statistics
The name of a history table for a device is the result of appending the string
“_hist” to the device name. This table consists of three columns and has a row
size of seventy-two. A new record of the table is generated every ten minutes.
This allows the table to describe the operation of the datalogger over the last
24 hours if the LoggerNet server version is 1.3.6.8 or greater. If the
LoggerNet server version is less than 1.3.6.8, only the last 12 hours will be
stored. The counters for this table are set to zero at the beginning of each ten-
minute interval. The columns of the table are as follows:
A.1.1 Attempts
Column Name: “Attempts”
Column Definition Description: “Attempts”
Type: uint4
Description: Records the total number of communication attempts the device
made during the ten-minute interval. This counter is incremented by on for
every entry that appears in the communication status log and is associated with
the device.
A.1.2 Failures
Column Name: “Failures”
Column Definition Description: “Failures”
Type: uint4
Description: Records the total number of communication failures that the
device experienced during the ten-minute interval. This counter is
incremented by one for every “F” record that appears in the communication
status log and is associated with the device.
A.1.3 Retries
Column Name: “Retries”
Column Definition Description: “Retries”
Type: uint4
A-1