BS ISO 11783-2:2019
$215.11
Tractors and machinery for agriculture and forestry. Serial control and communications data network – Physical layer
| Published By | Publication Date | Number of Pages |
| BSI | 2019 | 74 |
ISO 11783 specifies a serial data network for control and communications on forestry or agricultural tractors and mounted, semi-mounted, towed or self-propelled implements. Its purpose is to standardize the method and format of transfer of data between sensors, actuators, control elements, and information-storage and -display units, whether mounted on, or part of, the tractor or implement. ISO 11783 also provides an open interconnect system for on-board electronic systems used by agriculture and forestry equipment. It is intended to enable electronic control units (ECUs) to communicate with each other, providing a standardized system.
This document defines and describes the network’s 250 kbit/s, twisted, non-shielded, quad-cable physical layer and an alternative cable and architecture named twisted pair physical layer (TPPL) based on a 250 kbit/s, un-shielded, twisted pair cable network layer which is fully backward compatible to twisted quad based machines and devices.
NOTE Where not differently specified, requirements are valid for both twisted quad and TPPL.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 2 | National foreword |
| 7 | Foreword |
| 8 | Introduction |
| 9 | 1 Scope 2 Normative references 3 Terms and definitions |
| 10 | 4 Abbreviated terms 5 General requirements 5.1 Network physical layer 5.2 Physical media |
| 11 | 5.3 Differential voltage 5.4 Bus 5.4.1 Levels 5.4.2 Voltage range 5.4.3 Bus termination |
| 14 | 5.5 Resistance and capacitance 5.5.1 Internal resistance (Rin), capacitance (Cin) 5.5.2 Differential internal resistance (Rdiff), capacitance (Cdiff) |
| 15 | 5.5.3 Weak termination for stubs 5.6 Bit time 5.7 AC parameters |
| 16 | 6 Bus segment specifications 6.1 Twisted quad bus segment |
| 17 | 6.2 TPPL bus segment 7 Electrical specifications 7.1 Electrical data 7.1.1 General 7.1.2 Absolute maximum ratings 7.1.3 DC parameters |
| 21 | 7.1.4 Bus voltages (operational) 7.1.5 Electrostatic discharge (ESD) |
| 22 | 7.2 Physical media parameters 7.2.1 Ushielded twisted quad cable 7.2.2 Unshielded twisted pair |
| 24 | 7.3 Topology of twisted quad physical layers |
| 25 | 7.3.1 ECU connection to TBC_PWR and TBC_RTN 7.3.2 Power for TBC_PWR and TBC_RTN 7.4 Topology of twisted pair physical layer 7.4.1 General 7.4.2 Simple stub |
| 26 | 7.4.3 Compound stub |
| 27 | 7.4.4 Multiple splice |
| 28 | 7.5 TBC parameters |
| 29 | 7.6 Connectors 7.6.1 General |
| 30 | 7.6.2 Bus extension connector |
| 32 | 7.6.3 Implement bus breakaway connector |
| 41 | 7.6.4 In-cab connector |
| 45 | 7.6.5 Diagnostic connector |
| 50 | 8 Conformance tests 8.1 General requirements |
| 51 | 8.2 Internal resistance |
| 52 | 8.3 Internal differential resistance 8.4 ECU recessive input threshold |
| 53 | 8.5 ECU dominant input threshold 8.6 ECU dominant output |
| 54 | 8.7 ECU internal delay time |
| 55 | 9 Bus failure and fault confinement 9.1 General 9.2 Loss of network connection 9.3 Node power or ground loss |
| 56 | 9.4 Reaction to power-supply voltage disturbances 9.5 Network disruption during connection, disconnection or power-up 9.6 Open and short failures |
| 60 | Annex A (informative) Protocol controller timing and naming |
| 64 | Annex B (informative) Examples of physical layer circuits |
| 71 | Annex C (informative) Optional ECU stub connector |
| 73 | Bibliography |
