ISO INTERNATIONAL STANDARD 11786 First edition 1995-06-01 ANSI Internat Doc Sec Agricultural tractors and machinery Tractor-mounted sensor interface Specifications Tracteurs et materiels agricoles - Interface des capteurs montés sur le tracteur-Spécifications ISO Reference number ISO 11786:1995(E) nfor Standardizatior Noreproduction or networking pemited without license from IHS Not for Resale ISO11786:1995(E) Foreword IsO (the International Organization for Standardization) is a worldwide of preparing International Standards is normally carried out through sO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with Iso, also take part in the work. IsO collaborates closely with the International Electrotechnical Commission (lEC)onall mattersof electrotechnicalstandardization. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. International Standard ISO 11786 was prepared by Technical Committee ISO/TC 23, Tractors and machinery for agriculture and forestry, Subcom- mittee SC 19, Agricultural electronics. @ISO1995 Alt rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the publisher. International Organization for Standardization Case Postale 56 . CH-1211 Geneve 20 · Switzerland Printed in Switzerland yright Intemational Organization for Standardization No reproduction or networking permited without license from IHS Not for Resale ISO11786:1995(E) INTERNATIONAL STANDARD ISO Agricultural tractors and machinery Tractor-mounted sensor interface -- Specifications Scope DIN 405-1:1975, Knuckle thread: profiles, basic sizes, 1 general plan. This International Standard specifies an electrical D1N 405-2:1981,Knuckle thread: deviations and toler- connector and its pin layout for mounting on an agri- cultural tractor with a nominal 12-volt battery supply ances. for the purpose of providing an interface between tractor-mounted sensors and equipment requiring 3 Definitions signals from those sensors. The connector also pro- vides access to a low-current power source, to pro- For the purposes of this international Standard, the vide power primarily to instrumentation. foliowing definitions apply. This International Standard therefore provides a 3.1 ground speed signal: Actual forward speed of short-term solution to data communication between the tractor. arestricted set of tractor-mounted sensorsand other equipment such as monitors, actuators and control 3.2 theoretical ground speed signal: Product of systems on agricultural tractors and attached machin- tractor drive wheel rotational speed and the rolling ery, in anticipation of the availability of a standardized wheel circumference. digital data bus system. NOTE 1 This is the true ground speed where there is no It allows limited data communication facilities for wheelslip. Therollingcircumferenceisdefined in ISO 11795. Agricultural tractor drive wheel tyres - Meth- lower specification tractors not fitted with a digital ods ofmeasuring tyre rolling circumference. data bus system. 3.3 linkage position signal: Position of the tractor three-point linkage in the vertical piane between its iowest and highest points. 3.4 in-work/out-of-work signal: Binary status sig- nal indicating that the three-point linkage is situated below (in-work) or above (out-of-work) an adjustable 2. Normative references switching threshold. The following standards contain provisions which, 3.5 cMos: Complementary Metal-Oxide Semicon- through reference in this text, constitute provisions