On 12/4/18 4:02 PM, Sven Van Asbroeck wrote:
This patch: 1. adds a Fieldbus subsystem 2. adds support for the HMS Industrial Networks AB Profinet card.
Does this actually need a new fieldbus subsystem or could it just be implemented as a new network protocol?
1. Fieldbus subsystem --------------------- Fieldbus device (client) adapters allow data exchange with a PLC aka. "Fieldbus Controller" over a fieldbus (Profinet, FLNet, etc.) They are typically used when a Linux device wants to expose itself as an actuator, motor, console light, switch, etc. over the fieldbus. The framework is designed to provide a generic interface to Fieldbus Devices from both the Linux Kernel and the userspace.
Then this generic interface to a fieldbus device could just be a socket.
2. Add support for HMS Profinet Card ------------------------------------ Profinet is an industry technical standard for data communication over Industrial Ethernet, designed for collecting data from, and controlling, equipment in industrial systems, with a particular strength in delivering data under tight time constraints (on the order of 1ms or less). The profinet card itself is connected to the system via an industrial bus called 'anybus'. I have followed the bus driver/client driver pattern, and created an anybus bus driver, plus a client driver for the profinet card. In case this patch set gets (eventually) accepted, drivers for other anybus client cards may follow: flnet, cc-link, ... The anybus slot on the host is located on an 'anybus controller', which is custom h/w designed by arcx. It exposes a dual anybus host implementation, plus a power readout unrelated to the anybus.
