PLC通信相关

PLC接口和默认通讯参数相关

默认ip地址，端口等
https://docs.emqx.com/zh/neuronex/latest/configuration/south-devices/ethernet-ip/ethernet-ip.html

各种plc hmi地址规则

https://zhuanlan.zhihu.com/p/3739517

java s7库

https://gitee.com/xingshuang/iot-communication/blob/master/tutorial/README-S7-CN.md#14-%E4%B8%8A%E4%BC%A0%E4%B8%8B%E8%BD%BD%E6%8C%87%E4%BB%A4

LS XGT 编程口/串口协议

串口支持编程，还有一个usb口
https://lsis.com.cn/Cn/Download/download/catid/89.html

三菱编程口FX协议报文

https://blog.csdn.net/john_liu_/article/details/102659077