the substitution of variable in the profile of stimulus Editor

Hi all

I want suggestions on how to do it.

So I put the system definition for one of the signals as model Output1--> channel 1--> PXI FPGA AO1 user

Generally, the model output has controls the FPGA. However, I would like to substitute the output signal to another value to test a few flaws. I tried to substitute in the profile of stimulus Editor, but it would not work (for obvious reasons). I wonder what I can do to substitute the value of another signal that remove the mapping of model output 1 for channel 1 user whenever I want to test this fault.

Thank you.

Great question!

If you use the new editor of profile of Stimulus in 2011 VeriStand, you can perform insertion for lack of software of a sequence in real time using a set of special functions, fault, and clearfault. Fault function allows you to activate a software problem a specific parameter is mapped to a string of system definition (condition it is faultable) to a specified value. This replaces any source can have this channel mappings. To clear the fault of software, call clearfault on the service.

You can call these functions directly from the Expression. Here is some help on these and other features, you can call in a detailed sequence.

For example, imagine that you have the following sequence and ao0 parameter is mapped to the string of PXI FPGA AO0 system definition. This sequence when run would fault the AO0 PXI FPGA channel to the value - 10.0, wait 5 seconds, and then clear the fault on AO0. If the fault is active, all mappings are substituted, and any attempt to set the channel failing of the workspace will also fail. When the problem is resolved, any source mappings will affect again.

IMPORTANT NOTE: There is a bug in VeriStand 2011 which prevents a sequence of faults in real-time completely a channel if no other channel is currently failing in the system. The solution is to open the software tool Fault Manager of the workspace and the fault of some channels dummy, as a channel not used user, before running your sequence.

  • MySequence.nivsseq

    • Parameters

      • AO0

    • Code

      • Setup

      • Main

        • Expression: fault (ao0,-10,0)

        • Expression: Wait (5.0)

        • Expression: clearfault (ao0)

      • Cleaning

Tags: NI Products

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