In the industrial automation platform, PLC and industrial computer are two types of control architectures that people have to mention, and they are the basic architecture of most automation systems. The new technological development of PLC and industrial computer is the perfect expression of engineers' requirements for building application performance: the hardware standardization of the controller, and the user's various control requirements are changed through software.
The industrial computer uses the PCI bus of a comprehensive computer and uses functional boards to expand the control I/O points to complete a convenient control structure for computer control. It has the characteristics of industrial field application, and at the same time, it uses the software environment of PC very well, and users can easily select the products provided by various manufacturers.
The development of the industrial computer corresponds to the connection of things and the big data of the Internet of Things. In addition to the horizontal capture, collection, and integration of on-site data, it is also necessary to communicate with the planning side in two directions, and on the planning side, the data is transformed into information and further. After the trade plan, the reverse order is issued to guide the implementation of the joining end. In these processes, in addition to playing the role of the stable and reliable hardware cornerstone, the industrial computer must further integrate software and firmware, convert the data flow of different interfaces and negotiation, and play the role of the smooth middle of all kinds of information.
In the future, the business model of industrial computers will change, from pure hardware today to a management plan with a higher degree of integration of hardware, firmware and software. That is to say, in addition to fulfilling the role of an automatic machine in the future, the industrial computer in Japan also needs to integrate software and firmware to go all the way, and connect the ecological chain that serves no terminal needs.
The optimization and upgrading of the industrial layout is an important way to follow the existing Chinese manufacturing system and development. As an important role for automation and information interpretation, the industrial computer will inevitably develop with the comprehensive and widespread automation of the environment. In the plan of the industrial computer platform, in addition to providing customers with stable and reliable industrial computer products, it will also rely on the appreciation of software, so that customers can follow up with terminal applications at a minimum cost.
Important factors for selecting industrial switches
The industrial switch is the Ethernet switch architecture used in the industrial control platform. Because of the web standard used, its openness is good, the application is wide and the cost is low, and the transparent and uniform TCP/IP protocol is used. Ethernet has Become an important communication standard for the industrial control platform. It is a cost-effective industrial communication building specially provided to meet the needs of simple and changeable industrial applications. Provide excellent industrial-grade quality such as vibration resistance, high/low temperature resistance, dustproof, lightning protection, etc., and integrate various rich protocols such as routing, switching, security, etc., to enhance the reliability and security of industrial web pages, and to be able to meet the needs of safe cities. , intelligent transportation, outdoor surveillance and other deployment requirements in malicious situations.
The main factors to consider when selecting an industrial switch machine:
1. Reliability
In industrial field situations, reliability is critical. The factors related to product reliability are: the tolerance of building hardware to working conditions: such as working temperature limit, EMC electromagnetic compatibility, lightning protection level, installation and power supply system, fanless design, redundancy system, fault diagnosis and Recovery skills, etc. In the parameter shape of the product, it should be related to the detailed shape of the working temperature limit, electromagnetic protection, and lightning protection grade.
2. Timeliness
There will be a certain delay in the transmission of web page data. Therefore, when selecting an industrial Ethernet switch, it is necessary to consider the switch to deal with the port delay in the data frame forwarding process. In the standard manufacturer's automatic control system, the response time that the system can tolerate does not exceed 10 milliseconds. Therefore, when selecting a switch, it should be noted that the value of the switch port delay should not exceed 10 microseconds.
3. Compatibility
Industrial Ethernet switches and other industrial Ethernet components should be able to communicate using standard TCP/IP protocol. In any case, there should be no incompatibility between industrial Ethernet architectures and commercial Ethernet architectures. Corresponding to different industrial field bus management schemes, the industrial Ethernet architecture should have the corresponding ability to be compatible with it.
In addition, in the process of selecting an industrial switch, the user should also select an appropriate twisted pair or optical fiber interface according to some basic requirements such as transmission interval and transmission bandwidth. In some buildings such as continuous video terminals, wireless base stations, etc., a PoE power supply over Ethernet switch can be selected for the convenience of wiring.
The industrial switch has carrier-grade performance characteristics and can withstand harsh working conditions. The product series is rich and the port construction is simple, which can meet the application needs of various industrial platforms. The product adopts the wide temperature design, the protection level is not lower than IP30, the support standard and the proprietary ring network redundancy protocol.
