1, in Kingview, click "Equipment" to find the manufacturer corresponding to "MODBUS Equipment", select the corresponding model and set the port. Setting the port of PLC equipment is the same as setting MODBUS equipment. Continue after confirmation 2. 2. Find the address where MODBUS devices store data, and find "Variable" in Kingview to set I/O variables. The data of MODBUS devices can be set as I/O variables. The same is true for the variable setting of PLC. Ok, continue to 3.3, create a new screen in the "screen", pull a "button" to pull a text display control, double-click the button, and give the button "when pressed". Continue to 4.4, write the corresponding ladder diagram in PLC, and use the PLC data address you set in Kingview to make a data display screen in the touch screen. The data display address is set to the address of receiving data in PLC, and HMI is connected to PLCd. So far, so good. On a hot day, typing is hard and reading is lucky! ! !