正交脉冲计数芯片的中文说明，适合三相电动机，绞车等对两路正交脉冲信号进行加减计数的应用-Quadrature pulse counting chip Chinese explanation for three-phase motors, winches, etc. on two orthogonal pulse signal subtraction counting applications

油气回收装置PLC控制程序。控制两台压缩机组，三个电控两位三通阀门，4个电磁阀，1个变频器，4路温度采集，2路压力采集。-Oil recovery PLC control program. Control of two compressors, three electrically controlled two-way valve, 4 solenoid valve, an inverter, 4-channel temperature acquisition, 2-way pressure a