Machine PLC data acquisition and bar code identification printing network integration solutions

This is the east soil telecom technology co. , LTD. Based on printing machine PLC data acquisition and bar code recognition network integration solutions. Introduction of engineering machine PLC data acquisition and bar code identification printing network integration projects, customers are more than 3000 sets of machine tools, machine tools mainly through the automatic control of PLC, each machine tool controlled by a single PLC control respectively. PLC use products are KOYO company SN32DRB, SM16/24, B& R company PLC, SIEMENS S7 - for the company 300 ( PROFIBUS） And so on. Mainly for KOYO company SN32DRB, SM16/24. SN32DRB, SM16/24 have RSC232 and RS485 interface, RS232 interface MD - text display 02L。 Company has good management Ethernet network. Customer demand needs to be some registers in the more than 3000 sets of machine PLC data ( Data includes machine tools, production personnel work number, production date, the length of the product, etc. ） Read and generate reports on a regular basis to certain management, facilitates the management of the daily production. After the first set of process machine tool production product print bar code ( Bar code data include machine tools, production personnel work number, production date, the length of the product, the elasticity of the product. ） And read the information of product management system. The next set of work procedure of machine tools with a bar code reader read on a bar code data, and print out the process of product code. The final product as complete product barcode data from entering the product bar code management system. Network characteristics from the point of transmission distance and coverage, the communication network should belong to the industrial factory production control network. Main features include: signal acquisition, automatic control, information management, and other basic production business. Is given priority to with business data, and the communication network supported by the business, including real-time image, monitoring data and IP data, etc. , is a network of the whole business. From the above two points, the network closer to man. According to initial definition IEEE802 LAN standards committee, metropolitan area network ( 人) Based on optical fiber communication media, can provide high rate ( More than 45 mbit/s) To support integrated service transmission of data, voice, and graphics, in the span of 50 km - Within range of 150 km of the city to realize the data communication network of high-speed/broadband transmission. You can see that the machine PLC data acquisition and bar code identification printing network communication network coverage only in less than a man. Because of the characteristic of the engineering determines its communication system is suitable in the form of self-built fiber-optic cable to form a private network, thus, within the network can be used in the factory of twisted-pair high redundancy ring network. Therefore, the communication network can be seen as a campus network, to support data business is given priority to, but with higher real-time performance requirements for business more dedicated service area network. Network structure machine PLC data acquisition and bar code identification printing network transmission and exchange platform, as a variety of business, bear the data acquisition, automatic control and other business data of tandem and signal transfer tasks. From the topology structure, the entire network interconnection is ring structure of quasi radial network structure, as shown. Among them, the control center is composed of seven KIEN6000 - 2 s of redundant Yu Huan network, as the network core layer; Adopt the single mode optical fiber cable with seven factory backbone nodes are connected; Using double optical fiber backup link, each factory has a KIEN - 6000 2 S of 1000-8 and 16 KIEN tx 100 m/S redundant Yu Gongye ring, ring network using twisted-pair connection. Ethernet network analysis scheme is based on 2 switching transmission scheme. Using Ethernet as the exchange of communication and access platform advantage is very obvious. One is a huge network foundation knowledge and long-term experience, and now all popular operating systems and applications are also compatible with Ethernet; Second, the Ethernet good price performance ratio, initial costs and operating costs are low; In addition, Ethernet good scalability, easy to install opening, and high reliability. Ethernet USES the asynchronous way of working, very suitable for processing the IP data flow. At present from the Shared medium to full-duplex Ethernet LAN switching, in a great extent to achieve the information isolation between computers, eliminates the link bandwidth competition and potential collisions opportunity, at the same time, the transmission distance of the Ethernet is greatly expanded. Recently, Ethernet has gradually expand to the man and wan. From a technical point of view, the Ethernet is a very simple solution, only requires the least amount of planning, design and test work and application for many years, familiar to users, business assignment time can be reduced to a few hours or days; Second, Ethernet is a standard technology, good for the interchange interoperability, has a wide range of software and hardware support, the cost is low. Some predict that in the metropolitan area network and wide area network, Ethernet costs may SDH and ATM by 25% and 10%; Finally, Ethernet is the bearing technology has nothing to do with the media, can transparently with copper wire, cable and all kinds of different transmission media such as fiber optic interface, to avoid the cost of rewiring. Structurally, Ethernet is at an unprecedented end-to-end solutions occur, essential for elimination the other solutions network border format conversion, reduce the complexity of the network.