INT/NET Communication Bus Hierarchy
All controllers, thermostats and communicating wall sensors have at least one, if not two communication ports,
allowing them to communicate on various network buses at once.
INT Communication Bus
Also known as “Interface”, is the upper echelon
communication bus connecting the Network Controller
(NC), if present, with various Master controllers and/or
other stand-alone devices. INT is also the name given to the
two-node communication link used between a Digital Wall
Sensor (T200, T500, T1000) and its single-zone controller
(VAV, RTUS, HPS, FCU).
NET Communication Bus
Also known as “Network”, this communication bus is used
by Master controllers to allow them to talk with their own
group of Follower controllers. NOTE: a Master controller
is not an absolute requirement for Follower controllers to
operate properly, as they can work stand alone.
PL-M2000, PL-C1050 and PL-VC2000
• 2 ports, INT and NET
PL-T1000, PL-T500 and PL-T200
• 1 port, INT only
PL-NC2000
•2ports,RS485OUT(equivalenttoINTport)andRS485IN(used
for PC connection only, not to be connected directly to controllers)
PL-T110 0
• 1 port, NET only
Port availabilities per controller
2-4