1. An arrangement for use in a building control system, the arrangement comprising: a plurality of field controllers, each operably connected to at least one of the group consisting of a sensor of a building control system and an actuator of a building control system, each field controller including a first set of programming instructions operable to generate an actuator control value based at least in part on signals received from one or more of the at least one sensors, each field controller including a second set of programming instructions operable to process sensor data to generate information other than actuator control signals; and a computer work station including a general purpose computer, the computer workstation including a third set of programming instructions operable to perform data interface functions for data generated by the plurality of field controllers, the computer work station further including a fourth set of programming instructions operable to perform the functions of at least one of the group consisting of the first set of programming instructions and the second set of programming instructions.