I guess the above just goes into the scripting panes. One problem I have is how do I debug the program I write. Not sure how to be able to do that, for example, look at the contents of a variable.

That said above this looks super interesting to handle responses

https://ioninja.com/doc/developer-manual/tutorial-ias-server.html

I found the manual at

https://ioninja.com/doc/developer-manual/group_proto-modbus.html?srsltid=AfmBOoqJfrT4qjexVkCA_l9euYmY_8MPLPnjL9Qix4fknICMRvOxF7aS

not quite enough detail for programming for example

size_t errorcode receiveAll(
void* p,
size_t size,
uint_t timeout
);

what it timeout in milliseconds? and what are the values or error code and what do they mean - I could not find that

I have just started using ioNinja (evaluation) as well. Where is the documentation for the libraries that are imported in the above script.