返回的码有7对f，之前的设备没有这样的问题，应该怎么解决呢？

运行一段时候后Tcp server 会断，重连也连不上，能ping通，tcp的配置如附件

HF9606处于远程在线状态，但IOTService软件无法添加虚拟通道，添加虚拟通道的按钮为灰色

200smart用TCP—CONNECT指令连接不上HF5112，HF5112用的是默认的TCP Server. 还有一个问题，默认的一个TCP Server通讯可以轮询两个RS232串口吗？

软件连接失败

As I understand the manual, I connect pin 4 to pin 8 for >4 seconds. When I do this nothing happens. Is there any way to return the wifi config to default? When I search wifi AP from my phone I don't see Elfin... This device was setup for a site which no longer exists so I need to return it to factory default to be able to use it.