Page 7,i.e. Figure 4, specific to 6512, of the NI651X Specification manual shows the connector pin out.
My question is related to pin 9, (P0.COM (P0.GND)). Is this pin tied to ground? Or is it the common pin for all port 0 pins.
So in my case if I were to connect +28V to pins 10, 11, and 12 and +28V return to pin 9. When I control P0.0 (pin 1), I would swtich pin 1 output between +28V and ground?