I am trying to support some equipment we have in the field. We are reading a linear and angular encoder trying to synchronize them. We are using PXIe-6612. I am already using the CTR7 to generate a sample clock that the two CI tasks share, wired back into an available PFI line (PFI7 I believe). That's working fine.
I was synchronizing the start just by calling the two "DAQ Start" VI's "at the same time" in a sequence structure (we are using LabVIEW 2014). There are questions as to whether this is adequately synchronized. In fact I found quite a difference if I would start angle first then linear, or if I would start linear first then angle.
Anyway, start trigger should be easy so I thought I would do that. I have an Allen Bradley PAC in the system that can output a DO and I wanted to use an available PFI line (PFI6 iirc) as a start trigger.
Unfortunately when the customer runs this code, the DAQmx Trigger call returns error -200452, which makes it seem like I can't use that function on this card. From what I can tell from the rest of the literature, it should actually work fine.
Thanks for any insight anyone can provide. Of course this is made more complicated by the fact that I don't have physical access to the hardwrare at the moment...