Tool/software:
I was doing a simple simulation where a pulse generator in Simulink is sent to two digital outputs of the F280xx, in this case when clicking on "Build, Deploy and Start" in Simulink I observed that the communication with the control card was perfect because one digital output is the "LD2" led (I use a JTAG communication with an XDS200 Debug Probe to the interface card with the Plecs RT box), in the same way when clicking on "Build" the part of the Plecs block shows that there is communication between the control card and the RT box.
The problem is that I cannot see if there is any kind of communication from the digital output of the Plecs block to the F280xx control card because I must use the external mode and when I press the "Monitor and Tune" of Simulink it shows me the error that I will leave in the image below and said "External Mode Open Protocol Connect command failed. Caused by: Could not connect to target application: XCP internal error: timeout expired, in response to XCP CONNECT command".
In other forums there was talk about the solution by changing the "COM" port or adjusting the frequency of the oscillator clock; however, none of the above worked for me.
I leave the images of each point and the hardware implementation used, I hope there may be a solution.}
