MATLAB: XPC target toolbox

Question

Hi all,

I would like to ask why the sensory 526 DA (digital to analogue) block under the xPC target toolbox can only be used one at a time in a simulink workspace?? Error will occur stating that only one DA block can be used when I tried to insert two or more relevant block into the simulink workspace and run the real time execution.

If this is the case, then how can I design a block digram representing my system with multiple sensors in the same simulink file?? Doesn't make sense right if I seperated the block diagram into different simulink files in order to avoid placing two or more DA blocks in the same simulink file.

Please help. This is urgent. Thank you very much.

Regards

Answer 1

Though you have to use a single block, you can enter a vector of numbers in the "channels" parameter of the block mask that chooses channels for you, as indicated in the documentation.

The choice of whether you can use one block or many is often dictated by the hardware; I don't know for sure, but I would guess the hardware requires accessing some registers common to all channels, which makes splitting code up into different modules difficult.