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Wiring bacnetr general controller technical guide 7 bgc wiring figure 2 bgc wiring diagram oe338 26b bgc bacnet general controllerr binary inputs bin1 through bin8 applying 24vac activates each input analog inputs ai1through ai8 configured for the following 1 not used 2 thermistor 10k ohm type iii temperature sensors 3 4 20ma user scaled. Bacnet wiring guidelines product overview overview typically bacnet controllers are networked using the bacnet ms tp protocol bacnet ms tp is based on a physical rs 485 network baud rates officially support by ashrae 135 are 9600 19200 38400 76800 and 115000 is slowly being adopted bacnet ms tp offers a simple low cost. Bacnet introduction introduction bacnet is an building automation and control networking protocol it was developed by ashrae bacnet was designed specifically to meet the communication needs of building automation and control systems typical applications include heating ventilating and air conditioning control. Bacnet analog input object that has a set of standard properties like present value sensor type location alarm limits and so on some of these properties are required while others are optional one of the objects most important properties is its identifier a sort of numerical name that allows bacnet to access it un ambiguously once devices have common appear ances on the network . Bacnet wiring part 2 of 3 this article is the second in a series of three articles on bacnet wiring this series will cover the basic dos and donts with detailed explanations and useful tips eia 485 the bacnet ms tp protocol uses eia 485 rs 485 as the physical layer standard for data transmission neptronic controllers also use the