ControlNet
From Wikipedia, the free encyclopedia
ControlNet is an open industrial network protocol for industrial automation applications, this is also known as a fieldbus. ControlNet was earlier supported by ControlNet International, but in 2008 support and management of ControlNet was transferred to ODVA. ODVA now manages all protocols in the Common Industrial Protocol family.
ControlNet defines a unique physical layer based on RG-6 Coaxial cable with BNC connectors. Features which sets ControlNet apart from other fieldbusses includes the built in support for fully redundant cables and the fact that all communication on ControlNet is strictly scheduled and highly deterministic.
The physical layer signaling is based on Manchester code at 5Mbit/s.
The ControlNet application layer protocol is based on the Common Industrial Protocol (CIP) layer which is also used in DeviceNet and EtherNet/IP.
