This article will introduce three communication methods: MPI, TCP/TP and ISO protocol communication. MPI protocol and TCP/IP protocol: Step 1: Create a new 300 station (1) The hardware configuration is as follows: Slot No. 2: CPU314 [Order No.: 6ES7 314-1AG13-0AB0 V2.0] Slot No. 4: SM323-DI16/D016X24V/0.5A [Order No.: 6ES7 323-1BL00-0AA0] Slot No. 5: CP 343-1 [6GK7 343-1EX21-0XE0 V1.0] Step 2: Hardware configuration Step 3: Set the PC/PG interface Step 4: Write the test program Step 5: Set the connection method with S7-300 in WinCC OPC is for communication between S7-200, Omron and other brand PLCs and WinCC. Step 6: MPI Interface Parameter Settings Step 7: TCP/IP Interface Parameter Settings Step 8: Change Adapter Settings Step 9: Create a New Test Screen

Step 10: Activation Test Connection Successful The first and third are input/output fields (MD0 and MD8 respectively), and the second and fourth are output fields (MD4 and MD12 respectively). The test result is MD0=MD4; MD8=MD12, proving that WinCC and S7-300 are successfully connected. MAC Protocol (Industrial Ethernet) Step 1: Insert a new driver connection under WINCC Variable Management - Industrial Ethernet Step 2: Configure the new driver connection Step 3: Configure the Industrial Ethernet system parameters Step 4: Change the connected device Insert a new driver connection under Variable Management - Industrial Ethernet (Ⅱ), name the connection: iso_2, and keep the other settings exactly the same as Industrial Ethernet. (Forwarding code: Yiwei Quality Assurance: 6-month replacement, 5-year warranty, lifetime maintenance) Step 5: Connection Test Step 6: Variable Connection Test Welcome to follow Yiwei WeChat subscription account (unimat2004) for instant sharing of new industrial control technologies!