Abstract: In the reformation of programming control for tipper, the OMRON-C200H type programmable logic controller (PLC) made in Japan was used as the core of control system. The secondary circuit control part of original control system, which was mainly made up of relays, was replaced fully by PLC. The PLC has many advantages, such as the high reliability, the little maintenance workload, the flexible control configuration, the high control accuracy, the good extensibility and others. After the reformation, the full automatic operation of tipper was realized, and the reliability of tipper system was enhanced.

Key words: tipper, program control, programmable logic controller (PLC), composition