What Server Interfaces does TOP Server support?

OPC DA - OPC DA is a widely accepted industrial communication standard that enables data exchange between multi-vendor devices and control applications without proprietary restrictions.

OPC UA - OPC Unified Architecture is the open, platform-independent industrial communication standard published by the OPC Foundation as IEC 62541.

DDE - Access to DDE applications that support one of the following DDE formats: CF_Text, XL_Table, and Advanced DDE.

FastDDE/SuiteLink - FastDDE is a DDE format defined by AVEVA, formerly Wonderware Corporation. SuiteLink is a client-server communication method that has succeeded FastDDE. 

OPC AE - OPC Alarms & Events (AE) is a specification developed by the OPC Foundation to standardize the way that
alarm and event information is shared among systems. The AE server interface does not support tracking events, or the following optional interfaces:  IOPCEventServer::QueryEventAttributes, IOPCEventServer::TranslateToItemIDs, and IOPCEventServer2:

OPC HDA - The OPC Classic standard for retrieving archived process data from historians and time-series databases. Where OPC DA delivers live tag values in real time, OPC HDA delivers everything that has already been recorded, with the ability to request raw archive values, interpolated points, or computed aggregates over any time range.