Abstract: Electronic wiring technology uses electronic circuits to eliminate or replace physical wiring, that is, to eliminate the physical wiring of field instrument signals from field junction box to intermediate junction cabinet and then to I / O cards, and realize one-time conversion on electronic characteristic terminals to reduce corresponding cable connections. The advantages of electronic wiring technology include eliminating the wiring, shortening the progress and reducing the risks, flexibly handling late changes, and receiving active alarm. The engineering design of electronic wiring includes network design, protection and explosion-proof, hazardous area design, power supply, grounding and lightning protection. Combined with practical application in projects, this paper discusses the above contents in detail, which is helpful for engineers and technicians to understand and apply this technology.

Key words: electronic wiring technology, characteristic module/CHARM, CHARM I / O card