中文版
Description
3BHE039203R0101-GVC736CE101
According to the difference of field input signal, the input module can be divided into switching input module and analog input module. The function of the switching input module is to convert various switching signals into TTL standard signals required by the CPU. According to the input power supply type, it can be divided into DC input module and AC input module. The input signal is converted into TTL (5V) standard signal by photoelectric coupling after voltage division, current limiting and filtering. The function of the analog input module is to convert the continuously changing analog signals such as temperature, flow, current, voltage, etc. into several digital signals that the CPU can process.
3BHE039203R0101-GVC736CE101
3BHE039203R0101-GVC736CE101 Analog input circuit is generally composed of op-amp conversion, mode conversion (A/D), photoelectric isolation, etc. Types of PLC input and output modules: digital input DI, digital output DO, analog input AI, analog output AO. Digital input and output are generally 24V. There are 4 kinds of analog quantities in 2 categories, and the 2 categories are voltage type and current type respectively. Voltage type has 0-10V and -10 to 10V. Current type mainly has 4-20MA,0-20MA. Then the module converts the analog quantity into A number between +32767 and -32768 through A/D conversion, and then implements the control. The function of the signal template is to convert various process i/o signals. The input signals are converted into digital quantities, which are easy for plc to identify, process and analyze. The output is converted into analog to various regulating mechanisms for execution, or the output is converted into a 2-bit do quantity to control some devices such as start, stop, on and off
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