LinuxPLC Project from the Automation List dept. Hi all, I come from a motion control background, so maybe my point of view is not completely applicable to this scenario, but anyway here goes.
Operator sees problem, hits e-stop.
I envisage similar things happening in the PLC, all internal status is recovered, Physical Inputs are read and stored, Physical Outputs are set to 0, PLC Scan is activated. I would suggest a flag per iopoint specifying persistent or volatile. The SharedMemoryManager will store all persistent data to disk and retrieve it at power up and initialise all volatile data to a value specified. Hello all, Until now I just sit and read all interesting mails regarding the LinuxPLC project. I now feel I can contribute a few humble words regarding the storage of io-points.