Communication adapter T280

PCserialHART

The T280 is an OEM transmitter circuit board that provides HART transmitter functionality. The T280 is an OEM transmitter circuit board that provides HART transmitter functionality. T280 includes two differential input channels with A/D conversion. Bridge sensor elements may be directly connected to T280. Application specific front-end electronics may easily be connected. 6 mA is available. T280 supports Universal, a selected set of Common Practice HART commands and Device Specific commands for sensor trimming and factory configuration by an OEM user. T280 is compliant with the HART 6.0 standard. T280 is suited for a two-wire loop powered design. T280 supports HART multidrop configuration. T280 supports HART burst mode communication. General description: T280 contains a four channel 24 bit A/D converter from Texas Instruments. The circuit board comprises a Texas MSP µcontroller that runs the protocol and the application. T280 supports the HART Universal and the most applicable Common Practice Commands and can consequently be configured from any HART compliant hand held communicator or PC configuration tool. T280 also provides several Device Specific Commands that allow the OEM customer to configure and trim the circuit board in the factory. There are commands for setting addresses, serial numbers, and sensor limits and for calibrating the sensor. T280 supports three different input channels that can all be configured to be the Primary Variable (PV). Channel one and/or two could be a sensor bridge. It provides constant current or constant voltage for feeding the bridge.