CPU control circuit board and working method thereof and piezoelectric jacquard control system

The invention relates to a CPU control circuit board and a working method thereof and a piezoelectric jacquard control system. The CPU control circuit board comprises a CPU, a CAN bus and an RS485; the RS485 is suitable for receiving system parameter data and pattern process data from a superior processor, and after being subjected to timing sequence and enabling processing, the received data is transmitted to the CPU through an optocoupler module; the CAN bus is suitable for receiving action commands and synchronous signals from the superior processor, and the action commands and the synchronous signals are transmitted to the CPU through the optocoupler module. By the use of CAN bus communication, the CPU control circuit board is high in communication real-time performance, and by the adoption of a double-line serial communication mode, the CPU control circuit board is high in error detection capability, capable of working in a high-noise-interference environment, long in signal transmission distance, high i