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emb1428/1499的故障码的理解



emb1428的故障码如下:

emb1499的故障码如下:

问题1:是不是只有在emb1428接收到的故障码为1000,1001时,才代表系统工作正常?

问题2:emb1428与1499的故障码之间有什么关系?是不是1499的故障码就是1428故障码的低三位。比如,如果1499的fault引脚是000,那1428发送的故障码只能为0000,或1000?