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Data Acquisition
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Optiflow-Le provides a simple interface to update
work-in-progress. At its simplest form, you may just
manually key-in the data from time-to-time. It's like
entering data into a spreadsheet. Needs no training.
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Data Acquisition can be automated as well. Depending on
where data gets generated and what kind of access you
have, there are several ways to automate data acquisition
(hand held devices, data acquisition boards, barcodes ...
and so on). Most widely used data acquisition technique is
through OPC controls.
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Work-in-Progress Data Acquisition console
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| Automating
data acquisition using OPC DA. |
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OPC is an acronym for OLE (Object Linking &
Embedding) for Process Control. OPC Data Access
(OPC DA) is a group of standards that provides
specifications for communicating real-time data from
data-acquisition devices such as PLCs. The standard specifies the continuous
communication of real-time plant data between control
devices from different manufacturers.
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OPC DA deals only with real-time data. There are three
attributes associated with OPC DA; Value,
Quality of the Value and a Timestamp. OPC client
makes a request and collects this information at
specified time intervals. Client also applies a
timestamp and updates OPC server. LeIC collects and
updates data from OPC servers.
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You can also integrate other platform components
and data acquisition systems
such as SCADA (Supervisory Control and Data
Acquisition), in the same manner.
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Data Acquisition, in most cases, may have to be
customized to your exact requirement.
Optiflow-Le's data acquisition routines are open,
meaning that you can integrate most of these systems
with ease.
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