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Chapter 4: Programming
POLLING
Polling occurs when a PC automatically calls a remote CPP Monitor
2000 with a modem at a predetermined time and retrieves informa-
tion. The concept is similar to setting an alarm clock to download a
unit’s Data Logger or Event Log.
Polling is a useful feature for users who need to save more data than
the CPP Monitor 2000 is capable of holding. The unit’s Data Logger
can hold 32,768 input readings. This means that if one input is
being logged, CPP Monitor 2000 can store up to 32,768 data
samples, but if 10 inputs are being logged, the unit can only store up
to 3,276 data samples. Once the CPP Monitor 2000 has filled its
Data Logger, it will begin overwriting the oldest Data Log samples
with new samples. If it is important that you save all of your data
samples, and you intend to log more data than the CPP Monitor 2000
can hold, YOU MUST DOWNLOAD YOUR DATA.
To manually download CPP Monitor 2000 Data Log information to
your PC, simply press “Retrieve Data” on the “Datalogging”
programming form while on-line with the unit. The contents of the
Data Logger will be transferred to a database in your PC.
The process is the same for downloading the Event Log. While on-
line with the unit, press “Download Events” on the “Event Log
Viewer” form and the unit’s Event Log is saved to your PC. Polling
is nothing more than choosing a time for these features to automati-
cally execute.
To set up Polling, open the unit On-line or Off-line. To program
Polling, choose “Polling,” then “Unit Schedule” from the main
menu, or click on the Toolbar button labeled Unit Schedule.