Why is a 250Ω Resistor Required for Offline Debugging with a HART Communicator?
Introduction The HART (Highway Addressable Remote Transducer) protocol is a widely used communication standard in industrial process control systems. It enables digital communication between field instruments, such as transmitters and controllers, over traditional 4-20mA analog signal loops. When performing offline debugging or configuration using a HART communicator, a 250Ω resistor must be inserted in series […]
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