Description
PLC是由继电器控制原理发展起来的,它以存储执行逻辑运算、顺序控制、定时、计数和运算等操作的指令;并通过数字输入和输出操作,来控制各类机械或生产过程。用户编制的控制程序表达了生产过程的工艺要求,并事先存入plc的用户程序存储器中。运行时按存储程序的内容逐条执行,以完成工艺流程要求的操作。
DENTAL PORTABLE MOBILE X – RAY MACHINE SYSTEM DIGITAL j
DENTAL PORTABLE MOBILE X – RAY MACHINE SYSTEM DIGITAL k
DENTAL PORTABLE MOBILE X – RAY MACHINE SYSTEM w/DIGITAL
DENTAL PORTABLE MOBILE X – RAY MACHINE SYSTEM w/DIGITAL
DENTAL PORTABLE MOBILE X – RAY MACHINE SYSTEM w/DIGITAL
DENTAL PORTABLE MOBILE X – RAY MACHINE SYSTEM w/DIGITAL
DENTAL PORTABLE MOBILE X – RAY MACHINE SYSTEM w/DIGITAL
DENTAL PORTABLE MOBILE X – RAY MACHINE SYSTEM DIGITAL l