What is OPCF 21 D?

OPCF 21D stands for Open Process Control Foundation (OPCF) Data Access Specification (DA) Version 2.1D. OPCF is a set of standards and specifications that define how industrial automation devices communicate with each other. DA is one of the most widely used OPCF specifications, and it defines how devices exchange real-time data. OPCF 21D is the most recent version of the DA specification, and it includes several new features and enhancements over previous versions.

Some of the key features of OPCF 21D include:

* Support for OPC UA: OPC UA is a new industrial automation communication standard that is based on the Unified Architecture (UA) framework. OPCF 21D includes support for OPC UA, which allows devices to communicate with each other using either the OPC UA or DA protocol.

* Enhanced security: OPCF 21D includes several enhancements to security, such as support for user authentication and encryption.

* Improved performance: OPCF 21D includes several improvements to performance, such as reduced latency and increased throughput.

* Support for new devices: OPCF 21D includes support for new devices, such as programmable logic controllers (PLCs), distributed control systems (DCSs), and human-machine interfaces (HMIs).

OPCF 21D is a powerful and versatile specification that can be used to connect a wide variety of industrial automation devices. It is widely supported by automation vendors, and it is easy to use and configure.