Control Requirements: Use MODBUS TCP communication for data exchange between two PLCs
1. Read data from the server addresses 40001~40005 and store it in VW200~VW208;
2. Write data from VW210~VW218 into the server’s 40006~40010;
3. Write data from VB220 into 00001~00008.
Open the Modsim debugging software, establish a connection, fill in the client number consistent with the program, the debugging assistant acts as a server to communicate with the PLC client. However, one point to note is thatwhen using the debugging assistant, the server’s IP address must be set to the computer’s IP address;
Create a new data monitoring screen, you need to fill in Device ld, which can be found in the symbol table of the client program as mModbusUnitID;
1. Read data from the server addresses 40001~40005 and store it in VW200~VW208
Modify the values of 40001~40005 in the debugging assistant, at this time, you can see that the values of the client VW200~VW208 will also change.
2. Write data from VW210~VW218 into the server’s 40006~40010
Change the values of VW210-VW218 on the client, at this time, the values in the server’s 40006~40010 will also change.
3. Write data from VB220 into 00001~00008
Change the value of VB20 on the client, and the values in 00001~00008 in the debugging assistant will also change.
Source: Jicheng Training Network, Author: Jicheng – Sui Xiangjian, unauthorized reproduction is prohibited!
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