User Guide

Practical Theory: Understanding Polling, Extraction and Backup
9-2
9.3. Polling and Extraction Notes
Auto Polling via Modem with a Central Computer - Central computer autopolling via modem
is available once a day at midnight. Select Modem on Setup|System|Link, set Polling to
Enable on Setup|System|Link, and do not check the Disable Auto Polling / Auto Answering
box on Setup|Communication. Modem connection does not permit continuous autopolling.
Continuous Auto Polling
- A Central, Local or Service computer connected to the monitor via
RS-232 or network can perform continuous autopolling. Set Polling to Enable on
Setup|System|Link, and do not check the Disable Auto Polling / Auto Answering box on
Setup|Communication. Using a Service computer for continuous polling is not recommended.
Pause Auto Polling
- On String Status, you may select Setup|Pause Auto Polling to
temporarily suspend continuous polling. This is convenient if you are selecting other strings
in the list. Selecting Pause Auto Polling does not change settings on the Communication
Setup or Link dialog boxes.
Simultaneous Polling
- If two computers (Server/Central and Workstation/Local) are set up to
poll, set only one to report, email, and fax. Otherwise, both computers will attempt to perform
this when an alarm is identified.
Extracting Data via Modem with a Central Computer
- A Central computer connected via
modem can extract data. Select Auto Extract Data on Setup|Communication. The Central
computer polls monitor status at midnight, copies monitor data to the Central computer
database, and deletes the data from the monitor.
Extracting Data with a Central or Local Computer via RS-232 or Network
- A Central or
Local computer connected via RS-232 or network can extract data. A Service computer
cannot extract data. Select Auto Extract Data on Setup|Communication. During autopoll at
10PM, a Local computer copies monitor data to the Local computer database, but does not
delete the data from the monitor. At midnight, the Central computer autopolls monitor status,
copies the monitor data to the Central computer database, and deletes the data from the
monitor.