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.

Question

Taufik 2014-3-6

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/120470-i-want-to-give-a-digital-output-to-my-daq-using-simulink-but-i-get-an-error-says-input-to-a-block-m

评论： Taufik 2014-3-7

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

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Shankar Subramanian 2014-3-6

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/120470-i-want-to-give-a-digital-output-to-my-daq-using-simulink-but-i-get-an-error-says-input-to-a-block-m#answer_127336

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 个评论
显示 -1更早的评论隐藏 -1更早的评论

Taufik 2014-3-7

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

请先登录，再进行评论。