Historical
IEC 62026-3 Ed. 1.0 b:2000
Low-voltage switchgear and controlgear - Controller-device interfaces (CDIs) - Part 3: DeviceNet
Specifies an interface system between a single controller or multiple controllers, and control circuit devices or switching elements. The interface system uses two twisted shielded conductor pairs within one cable - one of these pairs provides a differential communication medium and the other pair provides power to the devices. This part establishes requirements for the interchangeability of components with such interfaces.
International Electrotechnical Commission [iec]