How to establish MODBUS communication in Siemens 1200

To set up MODBUS communication, you need to use TIA Portal, the programming software of Siemens S7-1200 PLC. First, you need to create a new project in TIA Portal, then add S7-1200 CPU to the project, and then select MODBUS TCP in the properties of the CPU, and set Necessary parameters, and finally write the MODBUS program to complete the setting of MODBUS communication.