Need some help with 9411 in SignalExpress
The 9411 has 6 A/B inputs and 4 counters (so how would you use all 6 inputs?)
I need to use the high-speed 2 counter frequency step. So I assume I can then only use 2 input pairs per 9411 since it only has 4 counters.
So for each 9411 I have 2 encoder A/B inputs on DI0a/b and DI2a/b (which are measuring chemical flow rate).
When I select high-speed mode (2 counters), how do I know which counters it's using? I keep getting error that resource is already in use. I created a step for each input as suggested.
I assume the PFI input terminals are the 6 DI A/B input pairs but why do PFI0, PFI1 and PFI2 show input and the other do not. I would assume only PFI0 and PFI2 work since that is where I have the inputs connected to.
I've used the linear position step which uses both A/B signals and it looks correct. But when using the freq step the #s are very wild, ranging from 0Hz to 1MegaHz ???
So which counters are used in high-speed freq mode?
What are the PFI? Why do that not match to the DI inputs?
Unable to find any proper documentation on this.
Thanks.
