I have a Festo CPV valve block with a CPI interface. This is the type with two 5-pin connectors having the pins arranged in a circle rather than a cross.

I think it would normally be connected to a festo controller of some sort and then up to a fieldbus or ethernet. However, I'd like to address it directly from a PC - does anyone know where I might find details of the protocol ? I've searched the festo sites but haven't been able to find anything much.

(sorry for typo in title .. I can edit post but not the title, I think !)

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