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Komoline manufactures more than 35 different weather sensors, including sensors to measure atmospheric pressure, wind speed and direction, precipitation, temperature, tides, relative humidity, leaf wetness, and radiation. A majority of the sensors are smart sensors that incorporate a microcontroller. The indigenously built sensors use the latest technology and can ensure strong signals over cable lengths up to several hundred meters. They are designed for specific applications in fields such as weather forecasting, pollution control, hydro-meteorology, agro-meteorology, aviation meteorology and oceanography. Accurate readings are obtained even in extreme weather conditions. Each sensor is individually calibrated so that sensors of the same model can be interchanged without any adjustment. Additionally, sensors with industry standard voltage output are supplied, for easy installation in the existing system.
Modbus Sensors:
MODBUS Protocol is a messaging structure developed by Modicon. It is a simple, open, message-based, master-slave/client-server communication protocol between intelligent devices. Later this protocol became a de facto standard in the industry. It supports asynchronous point-to-point and multidrop communications. It can be used with a variety of serial interfaces like RS-232, RS-485, etc.
KAL modbus sensors support ASCII and RTU transmission modes:
ASCII : ASCII mode uses ASCII characters to begin and end messages. Modbus ASCII messages is less efficient and uses LRC error checking.
RTU. Modbus RTU mode is the most common implementation, using binary coding and CRC error-checking. In RTU mode message-frames are separated by a minimum time gap (3.5 character) of silence between them. |