Error -201002 or -200303 When Doing Buffered Event Counting with DAQmx

Updated Jun 20, 2023

Reported In

Hardware

  • cDAQ-9174
  • NI-9402
  • C Series Counter Input Module

Driver

  • NI-DAQmx

Issue Details

I get error -201002 when using the internal timebase as the clock source for my buffered event counting task, as shown below.
 

If I change the clock to OnboardClock, as the error message suggests, I get error -200303, as shown below:
 

Why can't I use an internal or onboard clock for this application?

Solution

Buffered event counting tasks always require the use of an external clock source. Error -201002 occurs because, unlike with analog tasks, buffered counter tasks cannot divide down the internal or onboard clock. 

You can use another counter to generate a pulse train to be used as the clock for the buffered event counting. The Community Example Use Counter to Create a Clock for a Buffered Edge Counting Task  demonstrates this.  If using cDAQ, you can also use the sample clock from an AI, AO, or DIO task as the external clock.

Related Links

Other Support Options

Ask the NI Community

Collaborate with other users in our discussion forums



Request Support from an Engineer

A valid service agreement or active software subscription may be required, and support options vary by country.

Was this information helpful?

Yes

No