HART-asset monitor Error-ActiveX Component can`t create object
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Generally this issue comes when HART Device object type missed to install in some mandatory nodes.User manual recommends installing Device Object Types including Device specific DTMs on every system 800xA node which has Device Management PROFIBUS/HART installed.
In few nodes, it is mandatory to install and few nodes it is optional.
Refer System 800xA, PROFIBUS/HART Device Object Type Installation Guidelines - 2PAA110280_-_en_System_800xA_PROFIBUS_HART_Device_Object_Type_Installation_Guid
elines.pdf for more details.