OSIsoft PI ACE is a PI server module that provides an environment to execute custom code that is triggered by time or by a change in one or more PI tags. PI ACE is an Advanced Calculation Engine, which provides a more powerful solution than the PI Performance Equation (or PE) module. The Performance Equations are expressions defined within the ExDesc attribute of special PI Performance Equation tags, which is appropriate for simple calculations. PI ACE is custom code developed in Microsoft Visual Studio and executed within the PI ACE scheduler, thus it can perform calculations and a whole lot more...

With the full power of Visual Studio, PI ACE 'calculations' have the world at their disposal:

• Convert a PI tag from one engineering unit to another (LB to KG) dynamically as a PI tag value changes.
• Write control limits into PI tags when a product changes.
• Monitor a relational database and copy data into PI when new records are added (ex. lab results or cost figures from Accounting).
• Write records into a relational database when an event occurs (ex. production goes down)
• Update the module database from external data (ex. equipment capability properties following an equipment calibration)

OSIsoft PI ACE is designed to handle complex code that is event or time triggered. The designer can control which code is executed together and which is independent so you don't get stuck with one calculation interfering with other calculations.

With the heart of PI ACE in a formal code development tool (Visual Studio), you can properly manage the code, group related code together, and apply software versioning. OSIsoft provides a wrapper to implement your calculation code, so you concentrate on the logic specific to the calculation you want to perform and OSIsoft takes care of the implementation on your behalf. This is a tremendous improvement over Performance Equations when you have complex logic (ex. conditional logic, external data sources, and many lines of code that would best be managed in an environment where you can organize it and properly comment it).

Automated Results has developed a core expertise in OSIsoft PI process historians including PI ACE. Having developed our own advanced calculation engine prior to PI ACE, we appreciate the effort and the design issues that went into developing this powerful module.

We have 13+ years experience with the design, installation, configuration, and customization of OSIsoft PI. We have worked with small 2000 point systems and large distributed 250,000 point systems.

For more information about PI ACE, go to www.osisoft.com or give Automated Results a call at: (828) 862-6667