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 This
Month in the Inner Circle
 Featured
Product: OPC-Compatible Controllers
As more companies look to monitor and control
temperature from PCs over their plant-wide networks, the need
for simple connectivity is on the rise.
OPC, OLE (Object Linking and Embedding) for
Process Control, gives you the freedom to pick your controller
for its functionality, quality, and price, and cuts down the
costs and time for implementing automation systems. It makes
upgrades and maintenance quick and easy, and lets your system
change as your needs change.
CAL Controls connectivity package, CAL
OPC, connects to your plant network using the Modbus RTU
protocol over an RS485 or RS232 connection. With it, you can
connect up to 128 CAL controllers per COM port. CAL OPC comes
with preconfigured templates for CAL controller models, like the
CAL 9500P (above).
Click
the PDF icon to download the Lesman catalog pages on CAL
Controls software support packages for network-enabling your
controllers (92K).
 Featured
Website: OPC
Foundation
The OPC Foundation is comprised of 270
automation hardware and software suppliers, working to create an
industry standard for connectivity between process
instrumentation and plantwide networks.
At the OPC Foundation website, you'll find
technical documentation on the OPC standard, links to
OPC-compatible software providers, free downloads for
programmers, and links to demo OPC servers and clients.
You can use the online OPC server search
engine to find a specific OPC server for a device manufacturer,
specific model from a particular device manufacturer, or a
network interface.
Featured
Article: Handle with Care: Temperature Sensors Need
Know-How
Continuing our focus on temperature measurement
from the last issue, this article takes temperature sensors more
in depth.
This ISA Sensor Technology article
stresses the importance of accuracy and drift characteristics of
sensors and transmitters in determining measurement precision,
selecting the right sensor for accuracy, sensor failure alerts
through signal conditioning, calibration tips, and the keys to
good process design.
Click
the PDF icon to download this article (184k) or view it online.
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