Abstract
This design was carries on the analysis through PLC in the hot plastic formation craft survey and the principle, imperial sacrifices bright application order functional diagram SFC has completed the automatic control the hardware/software design. Meanwhile has carried on the elaboration in the design to the PLC characteristic and the superiority, for the convenient reader refers to, the paper also matches by, the PLC type choice, the hydraulic system schematic diagram, the electro-magnet sequence of operation chart, the I/O wiring diagram, the sequential control functional diagram, the trapezoidal chart, the instruction list. key word: PLC injection molding machine Automatic control application
