I want to give a digital output to my DAQ using Simulink. But I get an error says:Input to a block must have a discrete sample time.

3 views (last 30 days)
Taufik
Taufik on 6 Mar 2014
Commented: Taufik on 7 Mar 2014
I am using Data Acquisition Toolbox. I want to give a digital output from my Data Translation DAQ (DT9812-10v) by using simulink.
I used the Digital Output block from the toolbox and I connect it with a Constant block as an input. When I run the program, it gives me error message: Error reported by S-function 'sdaqdo' in 'research_projek_1/Digital Output': Input to a block must have a discrete sample time.
How would I overcome this problem? Thank you

Accepted Answer

Shankar Subramanian
Shankar Subramanian on 6 Mar 2014
Hi Taufik,
Can you open the constant and set the sample time on it to something other than 0 or Inf. The Digital blocks in Data Acquisition require discrete sample time inputs.
Thanks
Shankar
  1 Comment
Taufik
Taufik on 7 Mar 2014
Hi Shankar,
Thank you for your response. When I set the Sample Time to 0.002 it give me another error.
It says: Error reported by S-function 'sdaqdo' in 'research_projek_1/Digital Output': Data type at the input port must be logical type.
I try to find how to set the data type as the logical data type, but I do not manage to get it. Do you have any idea on how to change the data type to logical data type.?
Thank you

Sign in to comment.

More Answers (0)

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!