Can CVI support the PLC control system? thanks

[lct0811]

In my department there is a Siemens S7-400 PLC system with a PC running IFIX software to communicate with the PLC system.

Now  I wanna to develop a CVI program to control and watch the PLC system, because the IFIX data can not be open to other department.

How can I do it?Is there some examples for my task?

Thanks

[Jattie]

Do you have modbus support on you PLC?

If so you can use modbus through ethernet or modbus over a serial interface. Modbus is a well documented standard with lots of samples available, I've samples of both implementations, the key is if it's supportedby the PLC. If not find out what communications protocols is supported and what's being used by IFIX to talk to it?

[lct0811]

"

Do you have modbus support on you PLC?

If so you can use modbus through ethernet or modbus over a serial interface. Modbus is a well documented standard with lots of samples available, I've samples of both implementations, the key is if it's supportedby the PLC. If not find out what communications protocols is supported and what's being used by IFIX to talk to it?"

Thank you for your reply.

1 Could  you send the samples to me?if the samples include the detail information, that will be better. My email is:lct0811-1@126.com

2  I am a newer about my department  So I am not sure about the protocol about the communication between PLC and PC. But I think the most fessible solution is OPC server.  I am in my vocation now. Some days later i will return my department, and I will find out the communication protocol.Then  I will comfirm it.

Thank you.