IoT Protocol, Modbus

Modbus Protocol # 一文看懂 Modbus 协议 Complete Modbus Guide. a good intro to Modbus. nice intro to Modbus and Modbus Enron. ref Serial Port/Line/Connection Simulator/Emulator # Note: Setup / Use (Write & Read) Linux serial ports require root permission com0com / Null-modem emulator (windows, free) [suggested for win] # serial line/connections a kernel-mode virtual serial port driver for Windows. download from sourceforge free virtual serial ports (windows, free & commercial) # serial line/connections free version limit: port not permanent commercial version: support remote virtual paired ports (based on samba? ...