解决方法：现场检查所有的轴配置，将除了MC Power LX23功能块之外的所有能块屏蔽掉，然后测试，故障仍可复现：重新创建一个项目，只有MC Power LXM23功能块，则无论如何上电，故排除：根据现在的情况，经过检查，客户将CANopen设置为专家模式后，发送PO勾选了O3,并且，又将CANopen模式设置回了普通模式，但PO的配置被政变了，而PO3的配置，如图3-47、图3-48、图3-49所示。CANopen Remote Device PDO MappingService Data ObjectGeneralNode ID:1Enable Expert SettingsOptional DeviceEnable Sync ProducingCANopen Remote Device PDO Mapping Service Data Object CASelect receive PDO(RPDO)NameIndexSubIndex Bitlength☑1 st receive PD0co16#1400driveModeCtrl16#230F16#006refA1616#2310refB3216#231116#002nd receive PDO co 16#1401Controlword16#604016#0016Target Position16#607A16#00323rd receive PDO co 16#1402Controlword16#604016#0016Target velocity16#60FF16#00324th receive PDO co 16#1403CANopen Remote Device PDO MappingChannelsMappingChannelAddressTypeDefault Value Unit DescriptionUINT0refA16INT0refB32%QD4DINT0Controlword%QW10UINTTarget velocity%QD6DINTdriveStatUINT0UINT0%W14 UINT%W15 UINT0PO3中的链接字为Controlword and Target velocity,都属于命令字，这与功能块相冲突，从而导致无法正常使能，取消PO3的配置后，故障排除。