DH 485

DH 485

DH 485 is a proprietary communications protocol used by Allen-Bradley in their line of industrial control units. Utilizing a series of dedicated interface devices, it allows PCs and industrial controllers to communicate in a local area network using an RS-485 physical medium utilizing a token passing medium access control.[1]

References

  1. ^ "DH-485 Industrial Local Area Network Overview". Rockwell Automation. http://www.ab.com/en/epub/catalogs/12762/2181376/214372/1535907/3404063/. Retrieved 10 September 2010.