Connecting PCs with PLCs

Hi Afzal,

For this you need to know about the existing ports in the PLC. Whether there is any free comuincation port available on the PLC.

which PLC you have??

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Rich TECH411

Which PLC and What communications protocol? What existing features? What Software are you talking about?


Nathan Boeger

I imagine that you're asking how to add HMIs to a system without reprogramming the PLCs. This can be handled with pretty much any vendors software. You would typically get an OPC server to handle the communication between the PC and PLCs. Your HMI is probably an OPC client. You simply set up the HMI to interact with existing PLC memory.

Do you have a more specific question?

Nathan Boeger
Integrator, Microsoft Certified Systems Engineer