Trigger usage on cDAQ-9185 and NI-9401

Hi all,

I have a cDAQ 9185 & NI-9401 to measure digital signals. ctr0 is used
for edge separation, ctr2 & ctr3 to measure frequencies, which works well.
I need to add one trigger condition for all 3 ctrs.
This trigger signal could be done with e.g. ctr1 (unused).
The Test.vi with trigger for ctr0 throws the error message -200077 for startTask ctr0,
after the VI has been terminated. A trigger signal on PFI5 shows no effect,
no more data is read.
Someone has an idea what is going wrong here?

Thanks for your kind help.