Analog Output advantech PCI1711

Hello everybody,

I would like to use the "Analog Output"-Block of the Data Acquisition Toolbox for the advantech PCI1711 in one of my Simulink modells. Unfortunately I receive the following error:

Error reported by S-function 'sdaqao' in '.../Analog Output': The analog output subsystem of this device does not support clocked generation. With this hardware you must output individual samples using PUTSAMPLE and can not use a combination of PUTDATA and START.

To get around this error I wrote a Level-2 MATLAB S-function with the following code:

function analogoutput(block)

setup(block);

%endfunction

function setup(block)

    % Register the number of ports.
    block.NumInputPorts  = 1;
    block.NumOutputPorts = 0;

    % Set up the port properties to be inherited or dynamic.
    block.SetPreCompInpPortInfoToDynamic;

    % Override the input port properties.
    block.InputPort(1).DatatypeID  = 0;   %double
    block.InputPort(1).Complexity  = 'Real';
    block.InputPort(1).Dimensions   = 1;

    % Register the parameters.
    block.NumDialogPrms     = 0;  

    block.SetAccelRunOnTLC(false);

    block.SimStateCompliance = 'DefaultSimState';

    block.RegBlockMethod('Outputs', @Outputs);

%endfunction

function Outputs(block)

    output(block.InputPort(1).Data);

%endfuction

function output(u)

    AO = analogoutput('advantech');
    set(AO,'Samplerate',500);
    chan = addchannel(AO, [0 1]);

    putsample(AO, [0 u]); %0 Volt auf Channel 0 geben

    delete(AO);

Unfortunately this is a very slow solution that takes 26,5 ms/call.

If you had an idea of a faster solution I would be very thankful!

Cheers, Malte