Software enables OPC-DA process alarming and notification.April 17, 2006 -
TopView® v5.7 provides Operation feature that enables users to manipulate raw OPC-DA tag value before it is used for alarming and notification. Instead of current raw tag value, alarm conditions are then applied to result of operation. All operations - bit-masking, average, minimum, maximum, standard deviation, rate-of-change, and mathematical operations between multiple tags - are performed within program, with no tags to create and no scripting or programming required.
(Archive News Story - Products mentioned in this Archive News Story may or may not be available from the manufacturer.)
Original Press release
Exele Information Systems, Inc.
445 W. Commercial St.
East Rochester, NY, 14445
USA
TopView® v5.7 Adds Operations and Calculations to OPC-DA Process Alarming and Notification
Many times, the raw tag values available to the user through an OPC-DA Server are not enough to perform valuable alarming. For example, given a temperature tag, the user may want to create an alarm condition for the "average 5-minute temperature", yet no "average temperature" tag exists in the OPC Server.
The first solution is to use a calculation engine like OPCcalc to create a new tag containing the calculation result. The result tag can then be monitored. This solution is recommended for complex alarming conditions.
The second solution is to use the new Operation feature in TopView. Operations give you the ability to manipulate the raw OPC-DA tag value before it is used in TopView for alarming and notification.
The alarm conditions are then applied to the result of the operation instead of the current raw tag value. All operations are performed within TopView - no tags to create, and no scripting or programming required!
Tag operations include bit-masking, average, minimum, maximum, standard deviation, rate-of-change and mathematical operations between multiple tags and more...
More information and evaluation download available.
http://www.exele.com
Version 5.7 release information online: http://exele.com/downloads/topview_571/announce/announce57.htm
Dane Overfield
Exele Information Systems, Inc.
Email: dane@exele.com
Web: http://www.exele.com
Direct: 585 200 5771 (through 4/20/2006)
Exele Phone: 585 385 9740
USA
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