As we all know, in enterprise information systems, Ethernet has become the de facto standard network. Industrial real-time control is an extension of traditional Ethernet, helping users to build more open and integrated industrial automation and information networks. Traditional EtherNet is not designed for industrial applications and does not take into account the adaptability needs of the industrial field environment. Due to the extremely harsh conditions of machinery, climate, dust and other conditions on the industrial site, higher requirements are placed on the industrial reliability of the equipment. In a factory environment, industrial networks must have good reliability, recoverability, and maintainability.
How to achieve stable and reliable industrial Ethernet network in a harsh environment? In general, the choice of industrial Ethernet switches needs to consider: the functions that can be provided in other industrial Ethernet switches such as ring redundancy, virtual local area networks (VLANs), network management protocols, and error alarms. Utech UT Series Managed Redundant Industrial Ethernet Switches provide an economical solution for your Ethernet connection, enabling Ethernet and industrial Ethernet connectivity for your industrial Ethernet devices. Industrial switch adopts industrial standard design, operating temperature range of -40 ° C ~ 75 ° C, over-current, over-voltage and EMC protection redundant 24VDC dual power input, built-in intelligent alarm protection, can help system maintainers monitor the network's operating status in real time, Reliably work in harsh environments.
Ring redundancy: A ring network uses a continuous loop to connect each device together. It ensures that the signals sent on one device can be seen by all other devices on the ring. When the ring network redundancy refers to whether the switch supports the cable connection interruption in the network, the switch receives this information and activates its backup port to restore the network communication to normal operation. At the same time, the 7-port and 8-port disconnected switches in the network, the relay is closed, and the indicator light gives the user an error alarm. After the cable is repaired properly, the relay and indicator light return to the normal state.
VLAN function: A VLAN is an elastic grouping of multiple devices placed anywhere in the network, but they communicate as if they are in the same physical segment. With VLANs, you can segment your network without having to strictly adhere to physical connections—a major flaw in traditional network designs that strictly adhere to physical connection segmentation.
Network management function: Network management refers to the operation of network administrators to centrally manage resources on the network through network management procedures, including configuration management, performance and accounting management, problem management, operation management, and change management. The degree of management supported by a device reflects the manageability and operability of the device. The network management function of the switch refers to how the switch controls the user access to the switch and how much the user can view the switch. Typically, switch vendors provide management software or remote management switches that meet third-party management software. The general switch meets the SNMP MIB I / MIB II statistical management function. More complex switches will support RMON active monitoring through the built-in RMON group (mini-RMON). Some switches also allow external RMON probes to monitor the network status of the optional ports.
Alarm function: refers to the situation when the cable connection is interrupted or faulty in the ring network. In what way, this function is implemented, and the user is generally alerted by mail prompt or relay closure.
Summary: The development of China's Fast Ethernet technology has brought new opportunities to solve the problem of non-determinism of Ethernet. EtherNet's communication rate has increased from 10M, 100M to today's 1000M, 10G. In the case of the same data throughput, the increase of communication rate means the reduction of network load and the reduction of network transmission delay, that is, the network collision probability is greatly decline. EtherNet industrial switches have the functions of data storage and forwarding, so that the input and output data frames between ports can be buffered and no longer collide, which greatly improves the determinism and real-time performance of EtherNet communication.
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