You can debug programs with human-machine interface with MODBUS Protocol or communication protocols. 1. before using, you need to install GUIBuild configuration software in touch screen, software in the "MCU development tool GUIBuild configuration software in touch screen" 2. before using the GUIBuild and OPS6 touch software, double-click "KeiLib.exe" 3. after the software is installed, double-click Test.op6 to run the program. 4. when using a GUIBuild touch screen software, compile, and then select online simulation, and then select the correct COM port and click Connect