我用新1747-l553b下载程序后打到run位置时cpu报故障,故障内容是:when going to run,a user program dedard slot 8 as unused ,but slot is detected as having an io module inserted .this can also mean that the io module has reset itself .an attempt to erter run or test was made with empty rack.可是机架上第八个槽根本就没插模块,用io configuration读取硬件组态发现第九个槽多出一个输入模块 ,第八个槽并没有读出模块内容。谢谢各位了!