Hi Claes,

We often use strings for diagnostics. In version 5.5, it appears run-time trace does not support strings, but displays as 32-bit integers? PLC code works fine. Tracing strings is merely a convenience, not a necessity.

It is believed xtt_trace.cpp is the correct code module responsible for displaying values? Any suggestions on how we can adjust to support string tracing?

Regards,
Ron

Hi Ron,

xtt_trace.cpp is creating the display objects, but some info about the connection point such as type and attribute name is fetched from the flw-file so one has to go back and look where this is created in wb_gre.cpp and wb_tra.cpp to make a general solution. And it's not so easy to follow that path. I agree that this is something that is missing (also support for times and deltatimes) and I hope we can fix this to the next release.

/Claes

Hi Claes,

Thanks for the tips. Our programmers are digging through Proview source code and making a good effort to understand and support string tracing. They made significant progress last week. Although not completely finished, I do see strings tracing on our software development system. So, very encouraging. If interested, I will send you a patch once completed.

Regards,
Ron