Removing a block and making connections

Lets say I have a simple subsystem that is just an inport, an outport and a gain block. I want to get rid of the gain block and just have the inport connected to the outport. If i use replace_block I can only replace the gain with another block and if I use delete_block it will remove the gain but leave two disconnected lines. How can I remove this block and make the connection between the remaining two using code?

Answer 1

[Jarrod Rivituso]

I've run into this before. My solution was to find port handles and reconnect. I'm not sure if there is an easier way.

Here's a function that should do the trick:

function removeAndReconnectBlock(blockHandle)

%Get port handles and parent system
portHandles = get_param(blockHandle,'PortHandles');
sys = get_param(blockHandle,'Parent');

%Get source port
srcSignal = get_param(portHandles.Inport,'Line');
srcPort = get_param(srcSignal,'SrcPortHandle');

%Get destination port
destSignal = get_param(portHandles.Outport,'Line');
destPort = get_param(destSignal,'DstPortHandle');

%Remove
delete_line(destSignal);
delete_line(srcSignal);
delete_block(blockHandle);

%Reconnect
add_line(sys,srcPort,destPort)

Note that this only works for single input, single output blocks, but I'm sure you could see how you would extend it further.

[Michael Joslin]

This really help, thanks a lot!

Answer 2

[chandu]

May I know how to disconnect SimPowerSystems blocks using PortHandles? Please help me ASAP.....

[Marco Baratelli]

The following works for me using SimScape! Hope it helps.

sbh = getSimulinkBlockHandle([sys '/NameOfYourSpecificBlock']);
ph  = get_param(sbh,'PortHandles');
srcSignal = get_param(ph.RConn,'Line'); % or LConn for left connection of the block
delete_line(srcSignal);