Safe, reliable and efficient fast network redundancy ensures the continuity and security of industrial systems.
In the field of industrial automation, the connection of every industrial device plays a very important role in the entire industrial system. Unlike general office applications, when the Ethernet device connection fails, it may only mean that the PC cannot deliver information within a few minutes; however, in industrial applications, online interruption may cause significant economic loss. Therefore, in order to ensure the smooth operation of the overall industrial system when selecting industrial Ethernet equipment to meet the needs of industrial applications, the following points should be kept in mind:
Equipment in industrial applications must have high reliability
Fast recovery and security are required after online interruption to ensure continuous operation of the device
Unexpected alarm function, know the status of industrial equipment, prevent system damage
Efficient management capabilities make it easy to master Industrial Ethernet
Equipment in industrial applications must have high reliability
In fact, the application of Ethernet products to high-standard industrial environments has become a new trend. In order to achieve the reliability required in industrial applications, the user's Industrial Ethernet products must have at least the following characteristics:
Redundant power input to prevent single power failure
Ring topology to provide redundant paths
Built-in high quality and high reliability parts ensure long mean time between failures (MTBF)
Can be applied to ultra-standard temperature conditions, such as -40 ° C ~ 75 ° C
Rugged housing keeps it away from harmful substances
Comply with industry specifications (CE, FCC, UL, etc.) and pass rigorous testing such as impact, drop and shock
Fast recovery and security are required after online interruption to ensure continuous operation of the device
The features listed above can only meet the basic needs of industrial applications; when considering industrial data transmission problems, reliability not only means having a strong outer casing and good temperature resistance, but also includes recovery functions after online interruption. In an office environment, a three-minute online failure may only cause minor inconveniences; but in an industrial environment, the same three-minute online failure can result in huge economic losses. Therefore, self-healing the network will provide continuous network connectivity:
Self-recovery network system to avoid online interruptions at any time
When the device changes on the interface of the switch, the line can be quickly switched to keep the network device online.
It is worth noting that when industrial Ethernet devices are used in automation systems, they are mostly connected devices rather than computer hosts. However, since the entire automation system incorporates multiple devices, it is necessary to have data access authorized by certain systems in order to prevent unauthorized access.
Isolate the device's usage community to prevent unauthorized access
Dynamic status alarm function to know the status of industrial equipment and prevent system damage
Industrial Ethernet networking equipment has the responsibility of providing real-time warning messages to system maintainers. Even when the control engineers leave the control room, they also need to be informed of the status of the device at the same time as the accident occurs; in addition, the warning message must be actively transmitted according to the trigger of the event. Based on these requirements, industrial networking equipment must have the following requirements:
Send an alert immediately when an unexpected event occurs (eg by E-mail)
Provide signal output (such as: digital output, relay output) to remind field engineers
Efficient management capabilities make it easy to master Industrial Ethernet
Confirm the integrity of the network segment by transmitting the "Ping" command
Analyze field network status from a remote location
Assign the IP address of the connected device
Set up mirrored ports for better online data monitoring
Simple Network Management Protocol (SNMP) easily supports network analysis
OPC server makes it easy to integrate automation systems
In summary, in addition to the rugged design of industrial Ethernet equipment, it can operate in harsh industrial environments, and must have many useful management and monitoring functions, such as: self-recovery system, isolation of unauthorized access to the system, Automatic E-mail alarms that trigger events, etc. Additional features include the ability to transfer "Ping" commands to view network segments, set up IP addresses for connected devices, perform port mirroring to monitor real port operations, and more.
In short, current Industrial Ethernet products should provide:
The ability to keep industrial automation systems running
Real-time alarms to inform the status of industrial networking devices
Easy to master the capabilities of the entire industrial network
Industrially oriented design
Application range
Public utility automation
Traffic automation
Production automation
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