GB/T 26803.1-2011

This standard defines the general framework, terminology, and classification for bus systems used in industrial control computer systems. It is applied in the design and integration of programmable logic controllers (PLCs), distributed control systems (DCS), and industrial PCs to ensure interoperability between modules such as CPUs, I/O interfaces, and communication cards. The standard serves as a foundational reference for engineers and procurement professionals specifying bus architectures in automated manufacturing and process control environments.