MATLAB: Do I get a CPU overload error when executing the PCI 6052E card even at a low sampling rate of 25 Hz in xPC Target 2.9 (R2006a)

Simulink Real-Time

I have a simple model with a PCI 6052E analog input block and an output port. I want to test the maximum sampling rate achievable by this setup. I get CPU overload errors even if I run the model at a sampling rate of 25 Hz. I am using Watcom compiler to build my application. PCI 6052E card itself supports sampling speeds upto 333kHz.

Best Answer

The issue is due to Watcom compiler not optimizing code in the desired way and hence leading to the CPU overload errors.

To work around this issue use a supported Visual C compiler.

Related Solutions

MATLAB: Am I not able to transmit data through the Serial port when using Open Watcom 1.3 in xPC Target 2.9 (R2006a)

This issue is related to the compiler options provided to the Open Watcom 1.3 during compilation of the model source code.

To solve the issue you need to specify an additional option for the Real-Time Workshop build process. In order to do so:

1) Open the Configuration Parameters of your model

2) Navigate to the Real-Time Workshop pane

3) In the Make Command line add

 OPT_OPTS="-of"

4) Click OK to close the dialog

5) Build the model

Please note that upgrading to a newer version of xPC Target, e.g. xPC Target 3.0 (R2006b) or later resolves the issue.

MATLAB: Does the GETXPCPCI function in xPC Target 2.7.2 (R14SP2) list the National Instruments PXI 6052E board as an unknown device

This bug has been fixed in Release 14 Service Pack 3 (R14SP3). For previous product releases, read below for any possible workarounds:

We have verified that there is a bug in xPC Target 2.7.2 (R14SP2) in the way that the getxpcpci function returns information for the National Instruments PXI 6052E I/O board. This bug does not affect your ability to use the board.

Best Answer

Related Solutions

MATLAB: Am I not able to transmit data through the Serial port when using Open Watcom 1.3 in xPC Target 2.9 (R2006a)

MATLAB: Does the GETXPCPCI function in xPC Target 2.7.2 (R14SP2) list the National Instruments PXI 6052E board as an unknown device

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