MATLAB: Switch case

simulink

i need help here…to run a system in simulink an error is showed : Port 2 of 'final/Subsystem4/Subsystem2/Switch Case' can only be connected to an action subsystem and may not be connected to more than one action subsystem….if possible plz help me here…..

Best Answer

The message is clear. The output of the "Switch Case" block can only be connected to one (and only one) "Switch Case Action Subsystem" block, which can be found in library "Ports & Subsystems". Remember to connect the "Action Port", not the "Inport".

Open sl_subsys_sw1.mdl to see an example.

Related Solutions

MATLAB: Is a manual switch with one inport and two outports available in Simulink 7.1 (R2008a)

The ability to manually switch between outports is not available in Simulink 7.1 (R2008a) . To work around this issue, the actual manual switch block can be used with an Embedded MATLAB function as shown in the attached example model. This can also be achieved by an If-Action Subsystem.

MATLAB: How to get the x,y coordinates of port handles on a susbsytem block

Well, I answered my own question...PortConnectivity is the parameter I was looking for. Here is some code that will "clean up" the input and output ports for a subsystem like that above (assuming input and output port blocks are connected to the subsystem block). Make sure you select the subsystem to clean-up first!

% get the subsystem port handle positions
pc = get_param(gcb,'PortConnectivity');
% distance from the subsystem to the port
offset = 200;
for i = 1:numel(pc)
      % position of port connector
      y = pc(i).Position(2);
      x = pc(i).Position(1);
      % port block handle and size
      if isempty(pc(i).SrcBlock)
          ph = pc(i).DstBlock;
          off = -(offset-50); % asthetics here...related to the width of the port block
      else
          ph = pc(i).SrcBlock;
          off = offset;
      end
      % port block dimmensions
      pp = get_param(ph,'Position');
      w = pp(3)-pp(1);
      h = pp(4)-pp(2);
      % adjust position of port block
      set_param(ph,'Position',[x-off,y-h/2,x-off+w,y+h-h/2]);
  end

Best Answer

Related Solutions

MATLAB: Is a manual switch with one inport and two outports available in Simulink 7.1 (R2008a)

MATLAB: How to get the x,y coordinates of port handles on a susbsytem block

Related Question