文档介绍：J1939协议简介型号:PXF0945J1939协议简介缩写ACK            Acknowledgment:应答 BAM           BroadcastAnnounceMessage:广播通知消息 CAN            work:控制器局域网 CRC            CyclicRedundancyCheck:循环冗余校验 CTS            Clear-To-Send:清除发送 DA              DestinationAddress:目标地址 DLC            DataLengthCode:数据长度代码 DP              DataPage:数据页 EOF            EndofFrame:框架结束或帧结束 ID                Identifier:标志符 IDE             IdentifierExtensionBit:标志符扩展位 LLC             LogicalLinkControl:逻辑连接控制 LSB            LeastSignificantByteorLeastSignificantBit:最小有意义位或字节 MAC           essControl:媒体通道控制 MF              Manufacturer:制造商 MSB           MostSignificantByteorMostSignificantBit:最大有意义位或字节 NA              notAllowed:不应答 NACK          Negative-Acknowledgment:错误应答 P                Priority:优先级 PDU            ProtocolDataUnit:协议数据单元 PF              PDUFormat:协议数据单元格式 PGN            ParameterGroupNumber:参数组代码 PS              PDUSpecific:协议数据单元细节 GE              GroupExtension:组扩展 DA              DestinationAddress:目标单元地址 R                Reserved:保留 RTR            RemoteTransmissionRequest:远程传输请求 RTS            Request-To-Send:发送请求 SA              SourceAddress:原地址 SOF            StartofFrame:帧开始 SRR            SubstituteRemoteRequest:替代远程请求 TP               TransportProtocol:传送协议 Th                     HoldTime:保持时间 Tr                      ResponseTime:响应时间 un               Undefined:没有定义 :标