plc analog input modules is any value within a continuous range of variation, with the state of the digital representation is opposed. Typically used to capture and represent the analog of things, such as voltage and current, or frequency parameters. The analog input module is a possible acquisition of analog (such as voltage, current, thermocouple, plc digital input output module, temperature and other values) is transferred to a plc intelligent controller via a smart module 485. Its uses MODBUS RTU communication protocol agreement with the industrial data acquisition to achieve a unified docking program is also very easy.
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