Universal Terminal
One terminal interface for operating compatible implement functions.
AGRICULTURAL MACHINE COMMUNICATION
ISOBUS
The industry name associated with the ISO 11783 family of standards for communication between agricultural tractors, implements, displays, and farm software.
01 / Overview
A common language
for mixed machinery.
ISO 11783 specifies a serial data network for agricultural and forestry machinery. Its purpose is to standardize communication among sensors, actuators, control elements, displays, and information systems mounted on or connected to tractors and implements.
AEF develops guidelines that provide common interpretations of the standard and organizes conformity work. An ISOBUS label alone is not a complete compatibility promise: usable combinations depend on supported functions, implementations, versions, and verified conformance.
02 / System
Machine to terminal
to farm system.
This simplified path shows the information chain. Actual machines can contain multiple electronic control units and additional network segments.
MACHINE / 01Tractor ECUTractor data and functions
IMPLEMENT / 02Implement ECUImplement logic and control
OPERATOR / 03TerminalInterface and supervision
OPERATIONS / 04Farm softwareTasks, records, and planning
03 / Functions
Compatibility is
function-specific.
Task Controller
Coordinates task data and selected application functions between machines and farm systems.
Auxiliary Control
Maps compatible physical controls to implement functions.
Tractor Implement Management
Allows certified implement functions to request selected tractor actions within defined safety concepts.
04 / Boundaries
What FieldCircuit
will not imply.
Standardized does not mean universal.Machines may support different ISOBUS functions and implementation generations.
Marketing labels are not enough.Compatibility claims need evidence for the exact products, functions, and versions involved.
A summary is not the standard.Critical engineering work must use licensed standards, official guidelines, and certification resources.
05 / Evidence
Primary sources.
FieldCircuit links to official materials and provides original explanations. Restricted standard text is not reproduced.
02
ISO 11783-1:2017 — General standard for mobile data communicationInternational Organization for Standardization · Accessed 2026-07-11