Data collection analysis system based on Mitsubishi MELPLAC 2000

Abstract

The invention discloses a data collection analysis system based on Mitsubishi MELPLAC 2000 and belongs to the field of data processing. Due to construction of Ethernet, the data collection analysis system based on Mitsubishi MELPLAC 2000 establishes communication connection relation with a man-machine interface of an industrial personal computer, solves the problem that the industrial personal computer is lack of a private data transmission port, achieves real-time collection of operation state data of a site device, can connect a data collector of a third party personal digital assistant, greatly reduces cycle of data collection, achieves fast cycle of sampling of the data collection system, avoids possibility of omission of collection of the real time data, and enables all the areas of a production line to monitor relevant real time operation state data of the industrial personal computer control system. The data collection analysis system based on Mitsubishi MELPLAC 2000 is simple in framework, easy to achieve, large in data points capable of being collected, and capable of being widely used in data collection, analysis and monitoring area of the Mitsubishi MELPLAC 2000 industrial personal computer control system.

Description

technical field [0001] The invention belongs to the field of data processing, and in particular relates to an automatic data collection, transmission and analysis system used in the industrial production process. Background technique [0002] In the production process, some failures that cannot be found often occur. The cause may be the loss of the interlock signal of a certain device, or the damage of a certain device. [0003] After many failures occur, due to the lack of real-time measurement / operation data records when the failure occurs, it is impossible to find the cause of the failure, resulting in a high proportion of repeated failures, and in the production process, with the increasing demand for output and quality , And the control of equipment control function and precision also puts forward higher requirements. [0004] In many existing control systems, due to differences in design ideas and data processing concepts, for some key equipment, there are only variou...

AI Technical Summary

Problems solved by technology

[0007] 1. There are few operating data collection points, and many operating data collection points were originally used as "direct interaction" between PLC and PLC as a control system, not specifically established for data collection and fault analysis;

[0008] 2. Emphasis is placed on the control of interlocking functions, and less consideration is given to the development of fault analysis, alarm and other functions and data output;

[0009] 3. The data sampling period is long, and for some measurement points with a fast scanning period, it is easy to cause missing sampling;

[0010] 4. For reasons of confidentiality, the manufacturer does not disclose the specific content of the PLC's external communication protocol, and cannot externally connect various PDA software

[0011] In the existing hot continuous rolling production process, there are generally three methods for on-site real-time data collection: one is to use the form of data acquisition card to realize, the disadvantage of this method is that there are few sampling points (generally below 1,000 points) ), and it is necessary to modify the equipment circuit; another method is to use the data acquisition software that comes with the PLC system. Since the PLC programs produced by each manufacturer are different, the general disadvantage is that it focuses on the control function and runs the data analysis function. Weak or not, and there are few data collection points for equipment operation; the third method is to use third-party data collection software to collect data based on the PLC communication protocol, but because many PLC manufacturers do not publish the interface protocol, therefore, many PLC cannot use third-party data acquisition software

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