With just a few keystrokes, an operator can call up historical data
from any point in the past, and review trends, HMI screens and reports
exactly as they occurred. Pricing starts at $3,500, with XLReporter
available for an additional $1,600. InfoLink offers more capability at
that price than similar software historians that cost five to ten times
as much, according to the vendor. InfoLink runs on any PC, including
HMI workstations running HMI/SCADA software, and obtains its data via
OPC interfaces to PLCs, DCSes, RTUs and other hardware and software
packages. It stores data with tags and time stamps, so it can be
retrieved and displayed on screen in real time or in playback mode.
Unlike some competitive process historians, which use compression
technology, InfoLink retains all the original data on disk so that no
resolution of original data is lost.
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