Yunke China

Yunke China Information Technology Limited (Earlier name as DIGITAL CHINA NETWORKS LIMITED , DCN for short), possessing proprietary network brand and intellectual property. It is a new-generation global provider for data communications equipments,solution and infrastructure of smart city. Deriving from Lenovo, DCN was launched into the network market in 1997 with company philosophy of “Client-oriented, Technology-driven and Service-preference”. Based on independent development and sustainable innovation, DCN is continuous to provide networks products with intelligent, reliable and integrated network products, solution and quality service for the clients.


Industrial Ethernet switches have the following superior features

1, fast redundancy
Industrial Ethernet products can form a fast redundant network and use Advantech’s original X-Ring protocol to build a reliable industrial network with ultra-fast self-healing time of less than 10 milliseconds.
Commercial products can also form redundant networks, but the STP protocol needs to be started. This will allow the redundant time to reach 10~~30 seconds or more, so it cannot be used in industrial environments.
2, anti-interference – for harsh environments
Ethernet products can work in a harsh electromagnetic environment, and have a high degree of protection at the lightning protection of data ports, fast bursts of pulses, and static electricity, but this is not available for commercial products.
3, good temperature characteristics & installation flexibility
Good temperature characteristics, Advantech’s EKI series switches are wide temperature design. Operating temperature: -45 ~ 75 °C Storage temperature: -45 ~ 85 °C, to meet the stable needs of severe weather conditions.
The installation method is more flexible, and industrial-grade products can support rail-mounted, panel-mounted, stacked and cabinet-mounted installations.
4, Power Advantage & Installation Method Advantage
The power supply section is the root cause of any product, and all products fail, and their power failure rate accounts for more than 35 [%]. Therefore, in order to avoid the trouble caused by power failure, industrial switch products generally select the dual power supply mode. And using DC power supply. Commercial products generally use AC single power supply.

Key technical advantages of industrial switches

Industrial switches are specifically designed to meet the needs of flexible industrial applications and provide a cost-effective industrial Ethernet communications solution. And its networking is more focused on loop design. The loop has the difference between single loop and multiple loops. At the same time, there are private loop protocols designed by various manufacturers on the basis of STP and RSTP, such as FRP loop and turbo loop.
Industrial switches have the following advantages:
(1) zero self-healing ring network technology to achieve high reliability and integrity of data transmission
Prior to this, the fastest fault recovery time for global industrial switches was 20 milliseconds. However, no matter how short the ring network recovers from a fault, it will inevitably result in the loss of data packets during the switching period. This is not tolerated at the control command level. Zero self-healing has undoubtedly achieved breakthroughs in existing technologies and ensured high reliability and integrity of data.
The switch uses bidirectional data flow to ensure that when the network fails, there is always one direction that can reach the destination, ensuring uninterrupted control data.
(2) Bus-type network, realizing network and line integration
The bus network allows users to customize the controlled device by viewing the same virtual Mac terminal as the same device. The switch treats the controlled device as the same device, which allows the devices to communicate with each other, share information, and ensure the linkage of control. .
The switch supports a variety of bus protocols and I/O interfaces to network the bus data. Instead of the non-traditional point-to-point model, the network and bus resources are maximized. In turn, flexible network configuration enables direct connection of field devices such as meters and industrial cameras, allowing the PLC to connect to I/O devices that are further away, greatly reducing the number of PLCs in the entire system, and significantly reducing the cost of system integration. . In addition, the industrial switch can be integrated into the network monitoring software through the Web and SNMP OPC Server to monitor the status of nodes in real time, and has a fault alarm function to facilitate remote maintenance and management.
(3) Fast, real-time
Industrial switches have data priority features that allow users to customize certain devices as fast data devices. When fast data occurs in the ring network, ordinary data will make way for fast data. It avoids the situation that the traditional switch cannot be applied to the control command layer due to the large data delay.
(4) Self-controllable design
Industrial switches are self-developed products and have product intellectual property rights. Its core software/hardware, products and services are autonomous and controllable, basically ensuring that no malicious backdoors exist and that they can constantly improve or patch the loopholes.

What is an industrial switch?

Industrial switches are also referred to as Industrial Ethernet switches, which are Ethernet switch devices used in industrial control. Due to the adopted network standards, they have good openness, wide application, low cost, and use a transparent and unified TCP/IP protocol. Ethernet has become the main communication standard in the field of industrial control.
Industrial switches feature carrier-class performance and can withstand harsh operating environments. With a rich product range and flexible port configuration, it can meet the needs of various industrial fields. Products generally use -40 ~ +85 °C wide temperature design, wide voltage input range should reach DC12 ~ 36V, protection level is not lower than IP40, support for standard and private ring network redundancy protocol.
There is no essential difference between itself and the commercial network in terms of data link layer, network layer, protocol layer, etc. But for real-time requirements such as industrial control, Industrial Ethernet solves real-time communication, network security, intrinsic safety and security Explosion-proof technology and other technical issues, and the use of some measures suitable for the industrial environment, such as waterproof, anti-vibration … its core and commercial Ethernet is no essential difference, which is the difference between the PC and the IPC.
Industrial switch how to choose?
What is the difference between an industrial switch and an ordinary switch? In fact, in terms of performance, Industrial Ethernet switches and ordinary switches are not much different. From the network level, there are Layer 2 switches and of course, there are also Layer 3 switches. Industrial Ethernet switches have special emphasis on the design of other products and the selection of components and parts. They are oriented to the needs of industrial sites. They can still work normally under conditions of mechanical, climate, electromagnetic, and other harsh environments. Therefore, they are often It is widely used in industrial production scenarios where the conditions are relatively harsh and the requirements for product stability and safety performance are higher.
1, components
Industrial Ethernet switches have higher requirements for the selection of components. They must be able to adapt to the needs of industrial production sites. Components must have requirements such as anti-static, lightning protection, and ultra-high temperature resistance.
2, mechanical environment
Industrial Ethernet switches must be able to better withstand harsh mechanical environments, including shock, impact, corrosion, dust, and water.
3, climate and environment
Industrial Ethernet switches should be able to better adapt to poor weather conditions, including temperature, humidity, etc., and be used normally at ambient temperatures of -40 to +75°C.
4, electromagnetic environment
Industrial Ethernet switches must have strong anti-electromagnetic interference, and the level of electromagnetic interference protection should reach level 4.
5, working voltage
The working voltage of the IE switch should support a wide range, and it needs to cover the DC 12V-36V, and the POE power supply function needs to support 48V-57V.
6, power design
The industrial switch power supply needs to have dual power supplies for mutual backup, and also has the power failure alarm function as much as possible.
7, installation method
Industrial Ethernet switches can be installed using DIN rails, racks, etc. for ease of use.
8, heat dissipation
Industrial Ethernet switches must have a good thermal design to avoid operating problems caused by high temperatures.
Industrial switch application
Industrial switches have a wide range of applications. They are mainly used in industry applications such as coal mine safety, rail transit, factory automation, water treatment systems, and urban security.
Industrial switch type
Industrial switches have different classifications depending on the function used:
Industrial Rail Unmanaged Switch
Industrial rail type network management switch
Industrial rack type unmanaged switch
Industrial Rackmount Managed Switch

How to use the switch: Broadband router

Broadband routers have two roles. One is to connect different networks and the other is to select the line for information transmission. It is the best solution for sharing broadband connections. With the advantages of easy-to-use, easy-to-manage, and zero-maintenance, it has become the preferred device for Internet sharing access.
Choosing a router and choosing a computer is a good thing. The first thing to look at is hardware. The hardware is the basis of the router operation. The hardware model is good and the quality is high. The router is not only stable in function, but also can extend the function. For example, the number of access computers, the average access router can support up to 100 PCs, and in addition to IP sharing and routing functions also have a firewall, time management, DMZ and other functions;

DCN will attend Svaiz ICT 2018 on march 24th

DCN will attend Sviaz 2018, hold on April 24-27 in the Expocentre Fairgrounds,Moscow,Russia, We invite our customers and partners to visit our booth No. HALL21-C83. 
Sincerely hope that we could meet you at our exposition!

What are the application areas of industrial Ethernet switches?

The industrial Ethernet switch market is mainly used in power automation, factory automation, coal mine automation, rail transportation, wind energy and wind power, followed by metallurgy, petroleum and petrochemical, road traffic control automation, building automation control systems, oil field control automation, and automation of hydropower stations. Computer room monitoring system, water conservancy monitoring, environmental protection monitoring and other automatic industrial control places.

Industrial Ethernet Switch

Industrial switches are used in Ethernet switches in industrial control fields. Because of the open network standards, they are widely used, open, inexpensive, and use a transparent and unified TCP/IP protocol. Ethernet has become a field of industrial control. The main communication standard. Industrial managed gigabit ethernet switch are mainly used in places where outdoor environments, factories, intelligent transportation, coal mines and other natural environments are harsh, and therefore must meet industrial design standards such as waterproof, dustproof, anti-vibration, high-low temperature resistance, and corrosion resistance. Industrial-grade switches use a memory-conversion-switching method to increase the speed of Ethernet communications, and a built-in intelligent alarm design monitors network operating conditions, ensuring reliable and stable Ethernet operation in harsh industrial environments.