OPC UA
- Last UpdatedMar 22, 2017
- 1 minute read
OPC Unified Architecture (OPC UA) is an industrial machine-to-machine communication protocol for interoperability. It provides process control with enhanced security, advanced communication, security, and information models, and cross-platform connectivity.
OPC UA is implemented as a client in OI Gateway.
OPC UA differs significantly from OPC. The following provides the key differences between classic OPC and OPC UA.
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Classic OPC |
OPC UA |
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Uses the COM/DCOM technology of Microsoft to communicate. It does not have configurable time-outs. It depends on the DCOM time-out, which is configured in the system. |
Uses a services architecture to export data, which improves the ease of communication and connectivity. |
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Is dependent on Windows operating systems. |
Is platform independent and can connect to a wide variety of devices and platforms. |
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Has limited security. |
Has built-in security. |
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No built-in capabilities to handle problems, such as lost messages. |
Has built-in capabilities to handle problems, such as lost messages. |