Development library (API DLLs)
- Last UpdatedAug 13, 2025
- 1 minute read
The Development Library component installs the MES API DLLs to support third-party application development. These DLLs comprise the MES Stateless and Stateful APIs.
If you are upgrading a MES system that have scripts that use the MES Stateless or Stateful API DLLs, you must also upgrade the DLLs to the current version. After the installation and configuration, see the procedure in Upgrade MES .NET controls for AVEVA InTouch HMI applications.
The API DLLs that are included in the component are:
-
Fact.Client.Common.dll
-
Fact.Common.dll
-
Fact.Common.Interfaces.dll
-
FactMES.API.Commerce.dll
-
FactMES.API.Common.dll
-
FactMES.API.Core.dll
-
FactMES.API.EnProd.dll
-
FactMES.API.Labor.dll
-
FactMES.API.Prod.dll
-
FactMES.API.Quality.dll
-
FactMES.API.Util.dll
-
FactMES.Client.COM.dll
-
FactMES.Client.Common.dll
-
FactMES.Client.Interfaces.dll
-
FactMES.Client.MiddlewareAccess.dll
For more information about using these DLLs in scripts, see the MES Stateless and Stateful API Reference online help files.