[RC232] I would like to know how to use the pins N°27 and 28 on the RC2500HP Pin 27 and 28 must be left open. Last Update: August 8, 2017 December 20, 2016 1974 RC232 Q&A Related Knowledge Base Posts -[RC232] Do you have any application note about using modules in a RS485 bus?[RC232] Could you send details on how broadcast and unicast routing works? Is a mesh network or hopping supported, if so to what size?[RC232] Is it possible to program the frequency between to 240-378MHz?