connection is very unstable

大家好，我现在正在使用Ethercat连接从属IO设备，但是连接非常不稳定，我不知道问题是什么，这个问题已经折磨了我一个月。希望有人帮助我，非常感谢。（注：但我使用TwinCat 3.0软件作为主设备，与从机IO设备的连接非常稳定。DM3E556 此文件是在 Linux CNC 中配置的 XML 文件，SSC_IO5.17 此文件是下载到从设备的 XML 文件）

(Google Translate - andypugh - 如果你这样做，你可能会得到更多的回复) 
Hello everyone, I am using Ethercat to connect slave IO devices now, but the connection is very unstable, I don't know what the problem is, this problem has been tormenting me for a month. Hope someone can help me, thanks a lot. (Note: But I use TwinCat 3.0 software as the master device, and the connection with the slave IO device is very stable. DM3E556 This file is an XML file configured in Linux CNC, SSC_IO5.17 This file is an XML file downloaded to the slave device)