Read CAN signal from CANalyzer using COM object in MATLAB script

Hello,

I want to remote control a CANalyzer measurement with a MATLAB script via COM objects and stock while trying to get signals from CAN.

What I already have (working):

CANalyzer = actxserver('CANalyzer.Application');

CANalyzer.Open('someCANalyzerConfig.cfg');

CANalyzer.Measurement.Start;

Technical References from Vector says, that "Signal" is part of "Bus" which is part of "Application". So I type in the command window

CANalyzer.Bus

and the answer is

0×0 empty char array

I also tried to use the method from the .m-script from MathWorks Support Team by typing

simSetup = CANalyzer.Configuration.SimulationSetup;

buses = simSetup.buses; % Default bus = CAN.

bus = buses.Item(1); % Get bus object.

signal = bus.GetSignal(1,'ACU_Send_Signals_4','ACU_Bass_St');

disp(signal.Value)

but there is already a error message in the first line:

Invoke Error, Dispatch Exception: Nicht implementiert

Does anyone has an idea, how to solve this invoke error?

It seams as some objects are not present on the interface.

A simple .vbs-script with the 3 lines

Set App = CreateObject("CANalyzer.Application")
Set EngSpeed = App.Bus.GetSignal(1, "Engine", "EngSpeed")
MsgBox "The current value is " & EngSpeed.Value, vbSystemModal

is doing the job perfectly and shows me the actual value of the specific CAN signal.

Answer 1

[Thomas Wagner]

Vector support could answer me the question after some correspondence. The trick is the declaration of the "bus":

bus = get(CANalyzer, 'Bus', 'CAN');

instead of

bus = CANalyzer.Bus;

I hope this answer helps, if you have similar problems.