2015年4月1日星期三

Input module plc

PLC input module is the A / D converter module, with four independent analog input channels, output module plc signal for each channel can be 1 ~ 5V voltage signal can also be 4 ~ 20mA current signal. plc digital input module can input signal into a binary digital signal corresponding to eight, i.e. the measurement accuracy or resolution is eight of said. Decimal representation, it is converted into a value ranging from 0 to 255, provided to the PLC for further processing.
On the side of the module, corresponding to each plc ethernet module channel has a jumper, the user can be selected by shorting or jumper pins measuring not less then access signal is 1 ~ 5V voltage signal, or 4 ~ 20mA current signal. Signal conversion module, the maximum time is 2ms, the signal converter is working in parallel with the CPU of the PLC, the PLC scan time is not occupied.

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