GB/T 16679.1-2024 in English

Standard Evolution and Technological Innovation

GB/T 16679.1-2024, as an important standard in the field of industrial signal codes, replaces the 2009 version and is equivalent to the IEC 61175-1:2015 international standard. This revision presents three major technological breakthroughs:

Analysis of Signal Classification System

The standard innovatively establishes a two-dimensional classification matrix, firstly dividing it into report signal and signal classification according to the direction of information flow. class=instrument>control signal, which is further divided into 8 subcategories:

Signal code structure scheme

Chapter 5 of the standard stipulates that the code consists of 5 levels:

1. Object code: Adopt IEC 81346-1 reference code
2. Prefix symbol: Fixedly use semicolon (;)
3. Signal name: Contains classification code + short name + basic name
4. Connection identifier: Optional part introduced by colon (:)
5. Characteristic description: Additional parameters enclosed in brackets

Example: =W1E1Q1;M_CT2_I1L3:(10mA) represents the L3 phase measurement signal of No. 2 current transformer in No. 1 bay of the power plant

Implementation suggestions and precautions

Enterprises should focus on the following when implementing:

• Establish a reference code system consistent with IEC 81346
• Signal name domain selection follows the principle of primary object
• Human-machine interface (HMI) display requires language conversion
• Attention should be paid to term mapping during the transition period between the old and new standards