精品文档---下载后可任意编辑DRAFTSAE RECOMMENDED PRACTICE J2178CLASS B DATA COMMUNICATION NETWORK MESSAGESPART 1DETAILED HEADER FORMATS & PHYSICAL ADDRESS ASSIGNMENTS1/5/94THIS PAGE LEFT BLANK精品文档---下载后可任意编辑 TABLE OF CONTENTS SCOPE1REFERENCE AND RELATED DOCUMENTS, TERMS, DEFINITIONS, ABBREVIATIONS, AND ACRONYMS3.1Reference and Related Documents3SAE Documents3Other Documents3.2Terms and Definitions3.3Abbreviations and Acronyms6GENERAL INFORMATION7.1Part 1 Overview7.2In-Frame Response Field Formats8In-Frame Response Type 08In-Frame Response Type 18In-Frame Response Type 28In-Frame Response Type 38SINGLE BYTE HEADER MESSAGES AND FORMAT10CONSOLIDATED HEADER MESSAGES AND FORMAT11.1One Byte Form of the Consolidated Header Format11.2Three Byte Form of the Consolidated Header Format11Priority / Type - Byte 112Priority (PPP Bits)13Header Type (H Bit)13In-Frame Response (K Bit)14Addressing Type (Y Bit)14Type Modifier (ZZ Bits)15Target Address - Byte 216Source Address - Byte 316DATA FIELD FORMATS17.1Functional Data Field Formats17Functional Data Field Format 017Functional Data Field Format 117Functional Data Field Format 217The Parameter / Quantity Bit (Q bit)18The Control Bit (C bit)18The Secondary Address20Functional Data Field Format 320Functional Data Field Format 420.2Physical Data Field Formats21Physical Data Field Format 021Physical Data Field Format 121Physical Data Field Format 222.3Extended Addressing22PHYSICAL ADDRESS ASSIGNMENTS25APPENDIX A1SAEJ2178.PT1i1/5/94精品文档---下载后可任意编辑1SCOPE SCOPE:This document defines the information contained in the header and data fields of non-diagnostic messages for automotive serial communications based on SAE J1850 Class B networks. This document describes and specifies the header fields, data fields, field sizes...
