Automatic packaging scale system is widely used in chemical, foodstuff, food field. It is a very important equipment and has important significance to improve the level of automation in industry measuring field and improve the quality of products. The system applies electronic weighing technology and combines the parameter of quantity package system. Author develops automatic bagging scale that has small, wide measure scale. It is qualified for quantificational package whose stuff is loose.
The center of weighing fixed value controller is transducer. The system well makes use of the PLC's data processing,real-time measure, monitor ability and combines the PLC's logical control ability. Control system is composed of basic weighing fixed value controller and auxiliary PLC. The control system is convenient for automatic bagging scale's local operation.
The control system well makes use of the software resource and adopt the new digital standardization technology to standard system's zero, gain, maximum scale parameter etc. The controller is designed kind operational interface through. keyboard, monitor to carry out the control parameter's initialization, modification.
Key words:automatic packaging scale fixed value controller control system sensor PLC