External Equation Interface
- Last UpdatedSep 10, 2025
- 1 minute read
You can use the External Equation Interface to build external equation Dynamic Link Libraries (DLLs) that you can then use in AVEVA Process Simulation. You must use the software development kit (SDK) for the External Equation Interface to build the DLL. This SDK is known as the External Equation Toolkit (EETK) and includes a number of code examples that demonstrate how you can build your own external equation DLLs.
External equation DLLs are useful for the following situations:
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You have equations that are too complicated to directly express in the AVEVA Process Simulation modeling language.
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You have external data sets that you want to use in your equations and you cannot easily include this data within the AVEVA Process Simulation model's framework.
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You have proprietary data and equations that you do not want to expose within the AVEVA Process Simulation modeling language.
Please contact your local SimSci technical support center to obtain a copy of the EETK.