Abstract
The technique of electricity control gets to develop that it is along with the science technical development continuously and the craft produce which bring up the new request continuously. The modern of the technique of electricity control synthesize much advanced result of the science technique that it is computer, automatic control, the technique of electronics and measure etc.
This thesis designs primarily the system that the PLC controls the production line of storing the silk, the PLC not only uses for the control of switch, but still uses for the control of analogy variables and digital variables, and can collect and memorize the data, and can still supervise control system, so in this system it adopts the series of PLC of the Toshiba EX. More important because of the request of the control system, the number of I/O points of the control system is more 160, but EX250 can attain to the point of 256, so it is satisfied with the system's request. Therefore it does not need for expanding the other film in the system and it can make the control of the producing line simple. The function of the production line of storing the silk is working procedure already the shredded tobacco which processes complete, escorts to separately according to the different specification model and the different rank assigns to store the silk cabinet to store and performs to mix. Then, the different type shredded tobacco is escorted to the cigarette production line which assigns according to needs. The entire production line may output the material through several discharge holes at the same time, even may input/output the material through the cabinet at the same time.
Key words:The technique of power control;PLC;Control system;The production line of storing the silk