Productivity1000 analog I/O modules monitor or supply the signals needed for precision control of a process, including level, flow, and pressure data. Analog I/O signals are generated in ranges such as 0-20mA, 4-20mA and 0-10VDC. Modules are available in current, voltage, and high-resolution temperature models.
Analog I/O accommodates signals that can vary between full ON and full OFF that discrete I/O cannot. It provides the PLC with the data it needs for precision control of a process. To know the exact liquid level in a tank or to partly open a control valve, analog I/O is required. One important factor to remember with analog modules is the resolution they provide. The higher the resolution, the higher the accuracy of the input measurement or output response.
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