Abstract
Uses programmable controller (PLC) to make the transformation to the two-sided milling machine tradition relay - contact device electric control system, not only gave the two-sided milling machine PLC electric control system's design trapezoidal chart, the input output wiring diagram .PLC application to enhance the two-sided milling machine electric control system's reliability and antijamming ability greatly, moreover simplified and reduced the service maintenance work load greatly.
key word: PLC; Electric control system; Milling machine
