Abstract
Introduced to Mitsubishi PLC and GE s IFIX configuration software as the core of the coating production line monitoring and control system design and implementation methods. The system functionality, performance and control accuracy are typical applications in the production line, put into operation to improve the efficiency of the production line.
Key words
PLC IFIX super computer in the production process, the quality of various parameters on the coating has a great influence, the data including temperature, tension, gas concentration, coating process parameters reflected in the quality of products. Now only through a written record of the scene of coating parameters, the existence of machinery events real-time, registration can not be artificial timely and accurate data to reflect a variety of abnormalities affecting the production efficiency. We design a production line monitoring system, centralized monitoring of various parameters, and save the data for analysis.
1 System overview of the system mainly by the computer, PLC, field instruments and software composed of four parts, the system consisting of the following diagram:
The whole production line is divided into CP4, CP5, CP6, CP7, CP9, CP10 six parts, with six sets of Mitsubishi QnAs Series PLC control, are used to communicate with the host computer over Ethernet, PLC acquisition field instrumentation and control signal scene equipment, most of the standard 4-20mA signal, and complete data exchange with the server. Part PC using C / S structure, used between the server and workstation 10M ~ 100M Ethernet communications technology to ensure reliability of data transmission. HMI interface by the GE FUNUC (GE Fanuc Automation software) IFIX3.5C configuration to complete.
2 main function 1. Data Collection Field Instruments completed by PLC signal acquisition.
2. Device control through the PLC to control the field devices.
3. Display through the PC interface can demonstrate the status of field devices and real-time display the value of field instrumentation.
4. Alarm through the PC s configuration software can be achieved when IFIX field parameters collected over the alarm set value.
5. Data storage capabilities can save collected data on site some time in order to facilitate analysis and processing 6. Printing functions to print out the report and the original hand written form, like gymnastics, field data increased the accuracy and increased worker productivity.
3 hardware design uses Mitsubishi QnAs series PLC, the PLC sets the number of points the following statistical table:
Taking into account the future expansion of the system, various modules of the channel has a certain margin. PLC Ethernet communication module is equipped with RJ45 interface, easy network connectivity. The system PLC modular structure, flexible configuration, functional, reliable, with good adaptability and anti-jamming capability, and command-rich, you can easily carry out arithmetic and logic control.
Computer servers and workstations using HP series, with C / S structure, between servers and workstations using 10M ~ 100M Ethernet communications technology to ensure reliability of data transmission. Server to complete the temperature, tension, air flow, gas concentration and other parameters of the collection. Workstation to form, the form of graphics and animation field data and real-time status of equipment shown, and complete data records, query and reporting. System can be automatically generated based on user defined alarm messages and real-time to reflect on the computer screen, but also to place the current operation of on-site alarm to sound and light form issued to inform the operator of the alarm information to make appropriate treatment.
4 hardware optimization measures 1. Server and PC with Santak of UPS, in order to maintain the stability of power supply in power-down situation, but also can run the server and host computer.
2. Use of clean power supply to the PLC to improve the electromagnetic compatibility.
3. Wiring with a reasonable way of separate signal lines and power lines to prevent signal interference.
4. Communication line using ultra-five shielded twisted pair, to prevent the communication process by electromagnetic interference.
5 5.1 PLC software design software design using Mitsubishi s GX Developer programming software, with a ladder in the form of the actual situation according to the site programming.
5.2 PC software design and PC server installed on a WINDOWS XP system, using GE s man-machine interface development IFIX when they were under XP system, the software architecture used IFIX of C / S structure, so two computer can at the same time into a different system independent operation, this operation will not affect each other s machines, the kind of software architecture allows the system easy to expand, the current system time can be completed the same sets of operation of the system , after asking the same time the system operation more workstations can only increase the completion of the request and the server does not require any changes. Server installation IFIX SCADA point run unlimited version, IFIX database on the server, collecting and recording the fastest speed can reach 1 second, the PC shared server database, so PC version you can select IFIX run.
IFIX development of human-machine interface is divided into main screen and sub-systems, the main screen is a complete line of total appearance, and then subdivided into oven systems, tension systems, DIE system. Along with the trend curve, data query, alerting and reporting interface. Report by EXCEL spreadsheet,Can maintain the form similar to the original form. The picture shows the front panel under the main screen.
5 Conclusion The new system is simple, reliable operation, greatly improves production efficiency, to better preserve the production process of Shu Ju, Bian Yu Jinhangfenxi future.