In Emerson’s continuing commitment to open and interoperable standards, the optek-Danulat GmbH C_HC4xxx/C8xxx Rev 1 has passed the rigorous and comprehensive testing of the DeltaV Stress Test labs. Using the Device Installation Kits for Emerson Products website at http://www2.emersonprocess.com/en-US/documentation/deviceinstallkits/Pages/deviceinstallkitsearch.aspx, these fieldbus device files are now available for use.