描述
在编制PLC程序时,需要用到大量的内部元件来存放变量、中间结果、保持数据、定时计数、模块设置和各种标志位等信息。这些元件的种类与数量越多,表示PLC的存储和处理各种信息的能力越强。
DENTAL PORTABLE MOBILE X-RAY MACHINE SYSTEM 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