OPC UA
An object-oriented, platform-independent middleware. Instead of flat register addresses it defines semantic information models and hierarchical objects natively, over robust Client-Server or Pub-Sub profiles.
Type
Unified Architecture Middleware
Typical Latency
2ms–15ms.
Hardware Requirements
High-speed Ethernet backplane, server-side processing headroom for data schemas, certificate storage, TCP port 4840.
Security
Highly secure — x509 certificates, user authentication, sign & encrypt (Basic256Sha256), audit logging.
Typical Use Case
Enterprise SCADA data integration, secure machine-to-machine layers, MES/ERP ingestion, secure cloud connectivity.
Connection Parameters
- Default port
- TCP 4840 (opc.tcp://)
- Security policies
- None, Basic256Sha256, Aes128_Sha256_RsaOaep
- Message mode
- Sign / SignAndEncrypt
- Discovery
- Local Discovery Server (LDS)
Need OPC UA integration for your plant?
Our engineers configure drivers, gateways and security for this protocol as part of every Factomation deployment.