Which is better for PID module and PID instruction? -Solutions - Huaqiang Electronic Network
The two have their own characteristics. The PID instruction does not require PID hardware. It only needs the input/output of AD/DA, but it takes up the scan cycle of plc. The PID module is used directly, and the module of AD/DA is not needed, and it is basically not. The scan cycle is occupied, but the hardware requires investment costs. It is recommended that the user select the PID module without considering the economy.
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