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ISO 11783, known as Tractors and machinery for agriculture and forestry—Serial control and communications data network (commonly referred to as "ISOBUS") is a communication protocol for the agriculture industry based on, and harmonized with, the SAE J1939 protocol (which is based on the CAN bus).
Official maintenance of ISO 11783 is done by ISO TC 23 / SC 19 / WG 1 and WG5, however the Agricultural Industry Electronics Foundation (AEF) helps guide the ongoing direction of ISOBUS, organizes PlugFest events where many companies meet to test together, and provides formal ISOBUS conformance test tools.
The ISOBUS standard specifies a CAN network for control and communications on forestry or agricultural tractors and implements, although most usage is in the agricultural domain.