MATLAB: Update diagram (ctrl-D) fails due to missing bus signal, but the Bus Selector GUI finds the signal in the bus

bus selectorctrl-dmissing signal in bus selectorupdate diagram

I have a model which is failing update diagram for the subject reason. I have tried several things, but none work.

tried re-selecting the signal
tried deleting the bus selector, the problem just shifted to another bus selector looking at the same bus.

each time, the error appears in the command line, but clicking the hyper link to the model location, and opening the bus selector GUI, shows that the signal is available. I have gone through the path from signal/bus original, to some signal destinations, each time, all bus creators and selectors show the signals as available. Also, there are not other missing signals in any of the bus selectors getting signals from this bus. I cant find any error except the error at the command line. any help? im using Matlab Simulink R2013b.

Best Answer

See this answers page which may be relevant in your case

Related Solutions

MATLAB: Is the output of the Bus Selector block with the ‘Muxed Output’ option checked a bus or a mux signal (R14SP2)

The intended use of the 'Muxed Output' option is to create buses. This option is mislabeled. With that in mind, signals leaving this block should only feed bus capable blocks.

This option can cause difficulty due to the fact that when an outgoing signal is the same datatype it can be treated as a mux signal. For instance, as an input to a Gain block.

You should treat the output of a Bus Selector block with the mislabeled 'muxed output' option checked as a bus.

If you want a muxed signal, use a Bus Selector block to select the desired signals, which must have the same datatype and be scalars or vectors and connect those signals to a Mux block.

Please refer to the Related Solution for more information.

The option lets you prune one bus to produce another smaller bus.

MATLAB: Rename BUS

Hi,

if you create a sample BUS with the bus editor you can export the BUS in the Model Explorer (Ctrl + H) of your Simulink Model (Base Workspace). It will generate an .m-file where you can set the bus names and run on model startup:

% -------------------------------------------------------------------

%  MATLAB file generated by Simulink.saveVars 
% -------------------------------------------------------------------
FA = Simulink.Bus;
FA.Description = '';
FA.DataScope = 'Auto';
FA.HeaderFile = '';
saveVarsTmp{1} = Simulink.BusElement;
saveVarsTmp{1}.Name = 'cog';
saveVarsTmp{1}.DataType = 'double';
saveVarsTmp{1}.Complexity = 'real';
saveVarsTmp{1}.Dimensions = 1;
saveVarsTmp{1}.DimensionsMode = 'Fixed';
saveVarsTmp{1}.SamplingMode = 'Sample based';
saveVarsTmp{1}.SampleTime = -1;
saveVarsTmp{1}(2, 1) = Simulink.BusElement;
saveVarsTmp{1}(2, 1).Name = 'mass';
saveVarsTmp{1}(2, 1).DataType = 'double';
saveVarsTmp{1}(2, 1).Complexity = 'real';
saveVarsTmp{1}(2, 1).Dimensions = 1;
saveVarsTmp{1}(2, 1).DimensionsMode = 'Fixed';
saveVarsTmp{1}(2, 1).SamplingMode = 'Sample based';
saveVarsTmp{1}(2, 1).SampleTime = -1;
FA.Elements = saveVarsTmp{1};
clear saveVarsTmp;

Regards, Andreas

Best Answer

Related Solutions

MATLAB: Is the output of the Bus Selector block with the ‘Muxed Output’ option checked a bus or a mux signal (R14SP2)

MATLAB: Rename BUS

Related Question