The FX-PCX s are expansion I/O modules with integral RS-485 MS/TP communications.
FX-PCX s can serve in one of two capacities, depending on where they are installed in the control system. When installed on the Sensor Actuator (SA) Bus of FX-PCG and FX-PCX controllers, the FX-PCX s expand the I/O interfaces of the controllers. When installed on the Field Controller (FC) Bus, FX-PCX s can be used as I/O point multiplexors to support monitoring and control from a supervisory controller . The point multiplexor can also be useful for sharing points between other FX-PC controllers on the FC Bus using peer-to-peer connectivity.
A full range of FX-PCG models combined with the FX-PCX models can be applied to a wide variety of building applications ranging from simple fan coil or heat pump control to advanced central plant management.