OPC UA is a platform-independent, service-oriented communication architecture for reliable, secure and multisupplier data transport from the production level to the production planning and ERP system or to the cloud.

TwinCAT OPC UA Server

• supports the following OPC UA functions: Data Access, Historical Data Access, Alarms & Conditions
• Intermediate storage of data on the server: interruption of the communication connection does not lead to loss of data.
• graphical configurator for simple handling of local and remote OPC UA servers
• definition of user/groups-based access rights at namespace and node level
• support of client/server certificates to establish secure communication
• support of the TwinCAT Analytics file format for Historical Access

TwinCAT OPC UA Gateway

• high-performance, free-of-charge OPC COM DA server
• enables aggregation of multiple, subordinate TwinCAT OPC UA servers
• support of client/server certificates to establish secure communication

TwinCAT OPC UA Client

• supports OPC UA communication with remote OPC UA servers
• available as PLCopen-compliant PLC function block or as TwinCAT I/O device
• support of client/server certificates to establish secure communication
• automatic code generation

A technological overview of OPC UA products and further information can be found here.