Is there any way to access the field names available for non-active protocols in my data packets?

[lai2802]

I’m working on a project where I need to extract specific protocol fields from PLC communications for visualization purposes. I want to research the fields of protocols that my PLC isn’t currently using, but I’ve noticed that the field names in PyShark (the library I’m using to process packet captures) differ from those shown in Wireshark.

Is there a way to research or identify the correct field names for protocols in PyShark, even if the PLC doesn’t use those specific protocols? I’m having trouble matching Wireshark field names with the ones in PyShark, and I’m unsure how to explore the fields of protocols that aren’t in the actual traffic capture.