HPC0662BP & HPC8884BP controllers come preloaded with P1 FLN and BACnet MSTP communication protocols For servicing P1 FLN networks with new controllers when there is a future plan for upgrading the site to BACnet When the time comes switch the controller over to BACnet MSTP with a simple command Use HPC_P1 manuals for intitial installation Use HPC_BN after switchover