Reading axioline status via C++

PLCnext Technology & PLCnext Controls
1

Hello,

I am trying to go through the steps described in the example , and so far I have managed to run the first 2 steps („Hello PLCnext“ and Control Integration) of the example.
When trying to run part 3, I get the following:
MicrosoftTeams-image (8).png
I tried to do some debugging and I could find out which line leads to the InvalidOperationException, it seems to be here:
image.pngThe problem happens in the function call to ArpPlcIo_GetBufferPtrByPortNam . How do we get this example to run? What should we check to make sure our set up is correct?

MicrosoftTeams-image (8).png

2

Hello,
I can’t see your project and source code to give you informaion about the root cause of failure.
Please try to check follows:

                              * The following function must be executed. Please check whether the function parameter “runtime” matches the process name configured in the .acf-config file:

if (ArpSystemModule_Load("/usr/lib", "runtime", strSettingsFile.c_str()) != 0)

                              * Please execute the following command line to set the capabilities (after uploading of "Runtime" executable to the plcnext target under directory "/opt/plcnext/projects/Runtime"):

sudo setcap cap_net_bind_service,cap_net_admin,cap_net_raw,cap_ipc_lock,cap_sys_boot,cap_sys_nice,cap_sys_time+ep /opt/plcnext/projects/Runtime/Runtime
Best Regards
Eduard

3

Hi Eduard,
Thanks for your answer. I had a look at the code and it indeed turned out to be that

ArpSystemModule_Load("/usr/lib", "runtime", strSettingsFile.c_str()) != 0)

had the wrong project name in it. Changing „runtime“ to „Runtime“ has resolved the error. Thanks! Rick