Originally Posted by
oetkbyentc
Im not overly familiar with OPC but I do know it is limited in what data is available. Programed feedrate is available through #4109. Actual feedrate would only be available through a Function call from OPC if a function is available. #4319 is programed S not actual. So again you would need a function from OPC to read the actual spindle speed.
The same is true for anything you are wanting to read "real time" vs modal.
If this is a T control there is a function "Actual spindle speed output" the you can use to read the spindle encoder information from PMC address F40. But there is no such function for actual feed rate.
You could use PMC window functions and read the actual feedrate, loads, and spindle speed and store it in a PMC register (R,D, E) and access that through OPC. I would hope PMC address access is available to OPC.
Focas pretty much opens up the whole control and has far more power than OPC.