Can I use the board RCM 6760 in HDLC mode Port F tx and Port E for rx in UDP-HDLC full duplex comm?

I don’t know much about HDLC, but take a look at this commit with some improvements to the HDLC library and a sample program added to DC 10.72.

https://github.com/digidotcom/DCRabbit_10/commit/51e61a52ede15f432ad69ad223dd1637bed5b900