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本文是基于CANdelaStudio12.0讲解

问题一：当导入DTC的xxx.cdi文件报如下红色错误

可能原因：在设置具有下拉框的属性的内容时，输入的内容不在下拉框列表中

解决办法:在.cddt文件中更新“”Error Code Table“”内容，把新的选项更新进去，以下以“Corrective action”为例

DTC Export...导出的.cdi文件格式如下：

<?xml version="1.0" encoding="UTF-8" standalone="no" ?>
<!--                                                            -->
<!--  CANdelaStudio.exe 12.0 (12.0.100) -->
<!--  CdiExport.dll     12.0 (12.0.100) -->
<!--                                                            -->
<CANDELAIMPORT dtdfilevers="1.5.2" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"><IMPORTDOC><DTCCOLLECTION formatidentifier="ISO_14229_1"><DTCPOOL type="normal"/><RECORDTEMPLATEMAPPING><ITEMMAPPING id="_1">DTC_SHORTNAME</ITEMMAPPING><ITEMMAPPING id="_2">SetCondition</ITEMMAPPING><ITEMMAPPING id="_3">ResetCondition</ITEMMAPPING><ITEMMAPPING id="_4">CorrectiveAction</ITEMMAPPING><ITEMMAPPING id="_5">SpecialInstruction</ITEMMAPPING><ITEMMAPPING id="_6">DTC_OPERATION_CYCLE</ITEMMAPPING><ITEMMAPPING id="_7">DTC_AGING_SUPPORTED</ITEMMAPPING><ITEMMAPPING id="_8">DTC_AGING_CYCLE</ITEMMAPPING><ITEMMAPPING id="_9">DTC_AGING_COUNTER</ITEMMAPPING><ITEMMAPPING id="_10">DTC_INIT_MONITOR_REQUIRED</ITEMMAPPING><ITEMMAPPING id="_11">DTC_PRIORITY_VALUE</ITEMMAPPING><ITEMMAPPING id="_12">DTC_SEVERITY_VALUE</ITEMMAPPING><ITEMMAPPING id="_13">DTC_DEBOUNCING_ALGORITHM</ITEMMAPPING><ITEMMAPPING id="_14">DTC_STEP_SIZE_PREFAILED</ITEMMAPPING><ITEMMAPPING id="_15">DTC_STEP_SIZE_PREPASSED</ITEMMAPPING><ITEMMAPPING id="_16">DTC_JUMP_UP_PREFAILED</ITEMMAPPING><ITEMMAPPING id="_17">DTC_JUMP_DOWN_PREPASSED</ITEMMAPPING><ITEMMAPPING id="_18">DTC_WARNING_INDICATOR_FLAG</ITEMMAPPING><ITEMMAPPING id="_19">DTC_FUNCTIONAL_UNIT_VALUE</ITEMMAPPING><ITEMMAPPING id="_20">DTC_PRECONFIRMED_THRESHOLD</ITEMMAPPING><ITEMMAPPING id="_21">DTC_FAILED_THRESHOLD</ITEMMAPPING><ITEMMAPPING id="_22">DTC_PASSED_THRESHOLD</ITEMMAPPING><ITEMMAPPING id="_23" type="A">Status</ITEMMAPPING><ITEMMAPPING id="_24" type="A">RequirementsId</ITEMMAPPING></RECORDTEMPLATEMAPPING><DTCS><DTC number="12687495"><ERRORTEXT>与TBOX通信丢失</ERRORTEXT><RECORD><RECORDITEM itemmappingref="_1">TBOX节点丢失</RECORDITEM><RECORDITEM itemmappingref="_2">1. IG ON后1s
2.不处于bussoff状态
3. 蓄电池电压正常（9V~16V）或从蓄电池电压异常恢复1s后
4.85 02未被激活
5.接收的TBOX任意一帧周期报文连续丢失5帧</RECORDITEM><RECORDITEM itemmappingref="_3">所有周期报文接收到连续5帧</RECORDITEM><RECORDITEM itemmappingref="_4">TBOX通讯丢失</RECORDITEM><RECORDITEM itemmappingref="_5">引起故障可能的原因: 域控制器从MCU未正确检测到主MCU通讯数据</RECORDITEM><RECORDITEM itemmappingref="_6">DEM_POWER</RECORDITEM><RECORDITEM enumindex="1" itemmappingref="_7">not supported</RECORDITEM><RECORDITEM itemmappingref="_8">DEM_POWER</RECORDITEM><RECORDITEM itemmappingref="_9">0</RECORDITEM><RECORDITEM itemmappingref="_10">not required</RECORDITEM><RECORDITEM itemmappingref="_11">20</RECORDITEM><RECORDITEM enumindex="0" itemmappingref="_12">noSeverity</RECORDITEM><RECORDITEM enumindex="2" itemmappingref="_13">Application based</RECORDITEM><RECORDITEM itemmappingref="_14">0</RECORDITEM><RECORDITEM itemmappingref="_15">0</RECORDITEM><RECORDITEM enumindex="1" itemmappingref="_16">Yes</RECORDITEM><RECORDITEM enumindex="0" itemmappingref="_17">No</RECORDITEM><RECORDITEM enumindex="1" itemmappingref="_18">not supported</RECORDITEM><RECORDITEM itemmappingref="_19">0xFF</RECORDITEM><RECORDITEM itemmappingref="_20">0</RECORDITEM><RECORDITEM itemmappingref="_21">0</RECORDITEM><RECORDITEM itemmappingref="_22">0</RECORDITEM><RECORDITEM enumindex="0" itemmappingref="_23">in progress</RECORDITEM></RECORD></DTC></DTCS></DTCCOLLECTION></IMPORTDOC></CANDELAIMPORT>

诊断调查表， Available DTCs Fault Memory(24 Bit)，cdi文件三者的对应关系如下：诊断调查表的表头黑色部分是原始内容，红色部分是Available DTCs Fault Memory(24 Bit)内容，绿色部分内容对应的是cdi文件内容

需要特别注意的是：cdi文件中的DTC号显示为十进制，Available DTCs Fault Memory(24 Bit)显示的是16进制，具体怎么转换可以参考文章：DTC标准故障码格式解析

16进制转10进制，Excel中可以用HEX2DEC函数转换！

完整的操作步骤是：

1.先把最新的cdd文件保存为cddt文件

2.在cddt文件中更新“”Error Code Table“”内容，并保存

3.File->New->选择刚刚更新好的cddt模版文件，并保存为cdd文件

4.在保存好的cdd文件里继续更新“Available DTCs Fault Memory(24 Bit)”