INTERNATIONAL FORECOURT STANDARD FORUMSTANDARD FORECOURT PROTOCOLPART II.1COMMUNICATION SPECIFICATIONOver LonWorksVersion 1.91 March 2006Page: 65This document was written by the IFSF - Working Group:NameCompanyTelephoneDieter ClabenScheidt & Bachmann GmbH, Breite Strasse 132, 41238 Mnchengladbach, Germany+49/2166/266363Arnaud de FerrySchlumberger TechnologiesPeter MaeersBP Oil Europe, Gloucester House, Langley Quay, Waterside Drive, Langley, Slough , Berkshire SL3 6EY, United Kingdom+44/1753/549420John CarrierShell Europe Oil Products, York Road, London, SE1 7NA,United Kingdomjohn.carriershell.comNick BradshawIFSF Project ManagerNick.bradshawtalk21.comEduardo RezendeShellJrgen WedemannDeutsche Shell AG, VTP/4, berseering 35, 22297 Hamburg, Germany+49/40/63246445David BlythCalon Associates, Runcorn, United Kingdomdavid.blythinfranet-partners.comJiri KrivanekBeta Control Limited, Cerneho 58/60, Bystrc, CZ-635, Brno, Czech RepublicJkrivanekbetacontrol.czFor further copies and amendments to this document please contact:IFSF Technical Services. E-mail: techsupportifsf.orgTheir contact details and the latest revision of this document can be found on the Internet at the following address: Internet address: www.ifsf.org.FP2_1.91IFSF STANDARD FORECOURT PROTOCOLCOMMUNICATION SPECIFICATIONMarch 2006Document Contents文献内容0RECORD OF CHANGES54变更纪录1SYSTEM ARCHITECTURE86系统构架2COMMUNICATION PRINCIPLES97通讯原理2COMMUNICATION PRINCIPLES108通讯原理2.1LON Features108LON的特征2.2Application Communication Basics129应用通讯基础3APPLICATION MESSAGE FORMAT1712应用报文格式3.1Generic Message Frame1712一般报文框架3.2Application Message Fields1913应用报文域3.2.1Message Status M_St1913报文身份M_St3.2.2Message Length M_Lg2014报文长度M_Lg3.2.3Database Address DB_Ad and Length DB_Ad_Lg2014数据库地址DB_Ad和长度DB_Ad_Lg3.2.4Application Data Data2115应用数据Data3.3Application Message Type2115应用报文类型3.3.1Read - Message2115Read报文3.3.2Answer - Message2316Answer报文3.3.3Write - Message2518Write报文3.3.4Acknowledge - Message2719Acknowledge报文3.3.5Unsolicited Data - Message3022Unsolicited Data报文3.4Concurrent Message Handling322425并发的报文处理3.4.1Ambiguity of Block Cut Messages33253.4.2Ambiguity of Response Messages3325应答报文的不明确3.4.3NACK Reads3325NACK读取4IFSF COMMUNICATION SERVICES3426IFSF通讯服务4.1Addressing3426寻址4.2Application Protocol Parameters3426应用协议参数4.3Messages Code IFSF_MC3527报文编码IFSF_MC4.4Block Cutting BL35274.5Communication Service Database3628通讯服务数据库4.5.1Initial Node Installation3729初始节点安装4.5.2Recipient Address Table3729接受地址表4.5.3Heartbeat4335心跳4.6Data Encryption4436数据编密码4.6.1COPT Data Encryption4436COPT数据编密码4.7Unlocking4840解锁5IMPLEMENTATION GUIDELINES & RECOMMENDATIONS4941执行指导以及建议5.1Actions when a Device Recognises that a SC is Off-Line4941当设备识别到一个SC出于离线时的动作5.2IFSF Message Examples4941IFSF报文举例5.2.1Read and Answer Messages4941读取和应答报文5.2.2Write and Acknowledge Messages4941写和承认报文5.3Read and Write Data Error Handling5042读取与写数据错误的处理5.3.1Communication Layer Errors5042通讯层错误5.3.2Application Data Layer Errors5143应用数据层错误5.4Data_Ack Error Handling5244DATA_ACK错误的处理5.4.1Checking Order5345检查命令0Record of ChangesOnly changes effected in Versions1.83, 1.84 and 1.85 are listed. Previous changes can be viewed in previous versions available in the Library, Standards Archive Section.这里只列出了在1.83、1.84和1.85版本基础上的改变，其余的可以参见以前版本的库和标准档案文件部分。DateVersionModificationOctober 20021.83Various formatting modification throughout the document文献中所有的格式修改Reduced Record of Changes section.减少的更改记录的部分Section 4.1 Subnet Addressing Table removed. Cross referenced to Engineering Bulletin No. 8.删除了4.1部分的子网寻址表。February 20031.84Removed contact details for IFSF Technical Support and made reference to the IFSF web site instead.删除了与IFSF技术支持的联系资料和Chapter 3第3章Section 3.1 M_St included in “Message on the Network” Matrix.3.1部分M_St包含在“网络中的报文”的矩阵里Section 3.3.4 Value field of MS_ACK corrected.3.3.4部分中MS_ACK的Value域被更正Section 3.3.5 Example Database corrected.3.3.5部分中Example Database被更正Chapter 4第4章Section 4.3 Minor spelling corrections.4.3部分中次要的拼写被更正April 20031.85Various grammar and format corrections, including reducing white space from document.不同的文法与格式的更正，Chapter 1 System architecture modified to emphasize the decentralised solution (picture page 6 corrected).第1章系统结构上的修改是强调了分散的解决方案（第6页的图片被更正）Chapter 2.2. Table on page 10 corrected to be consistent with text on page 9. Footnote added to clarify the use of Acknowledge Message after a Read Message.2.2章第10页的表格修改为与第9页的文字一致。在读取报文之后，为了清楚说明确认报文的使用，增加了脚注Chapter 4.5.2. The writing of recipient address