I stumbled across a VERY INTERESTING new option board from Opto22. It is the OPTO-P1-40P that links their G4 or Snap IO boards to the Pi. Full information can be found http://info.opto22.com/raspberry-pi-io-selection-guide
Now comes the problem. On a 16 position carrier board only about 7 IO pins are mappable from Codesys GPIO. What I see as "mappable" (or configurable) on GPIO and Codesys are pins 4, 17, 18, 22, 23, 24, 25, 27, 28, 29, 30, and 31. On the Opto22 side, it needs pins 4, 5, 6, 12, 13, 16, 17, 19, 20, 21, 22, 23, 24, 25, 26, 27.
As I see it, this gives only 7 usable pins (or IO points) on the 16 IO board. Even if all pins were mapped directly we would still have only 12 available out of the 16. As this system if properly adapted would give us 16 freely configurable "industrial" I or O points, I feel this would be a good thing to have available!
Now the question(s). Is there already some option for mapping and configuring the necessary 16 IO points in to the Codesys GPIO "device"? If so please advise how I would do that. If I am indeed limited to the current 7 out of 16 points, would it be possible for the developers at 3s to make a "device" that would allow use of the Opto22 pins as configurable GPIO?
Thank you for your attention!