| 摘要 |
<p>Functions of a programmable logic controller are located in physically separable units. These physically separable units include a program execution device, or control device, whose function is limited to sequencing through the user logic program and a communication/programming device, which provides the programmability function. The micro controller incorporates a micro processor, RAM, and re programmable Flash EPROM in a single package implements the logical core of the program execution device.</p> |
