How to choose an Ethernet connector interface in three steps.

Ethernet has become a universal communication protocol in more and more fields. By using unified communication protocol standards between the cloud and each sensor, various acquisition, control sensors and intelligent technologies are continuously integrated into all aspects of the industrial production process. Industrial Internet of Things (IIoT for short) is gradually becoming a reality. However, the industrial transformation of Ethernet cannot be achieved without the right connectors and the right interface cannot be selected according to the specific needs of each application.

1. Three steps to select Ethernet interface:

What is the need rate? Data rate is one of the important parameters of Ethernet interface, and the selection of Ethernet interface must match the application needs. Among many industrial Ethernet protocols, Fast Ethernet (up to 100 Mbit/s) requires two pairs of cables and Gigabit Ethernet requires four pairs of cables. What are the environmental requirements? The Ethernet interface must be compatible with the usage environment. When selecting the Ethernet interface, the following parameters related to the usage environment should be considered: 1) Protection level (IP20 or IP65/67); 2) Temperature range; 3) Impact and vibration resistance; 4) Weather and chemical resistance. What is the application area? The application field of the equipment is also a factor affecting the selection of Ethernet interface, and it needs to comply with the corresponding industry standards and specifications. For example, PNO for PROFINET, ODVA for Ethernet/IP, ETG for EtherCAT, VNO for Varan, etc., it is usually necessary to select a standardized Ethernet interface. High efficiency.

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2. Application scenarios of various Ethernet interfaces:

Under what circumstances should I use the RJ45? The RJ45 connector is one of the most common connectors in the world and a symbol of Ethernet. This interface is typically used in places where environmental conditions are moderate (such as offices, data centers, and switch cabinets) and high mechanical loads do not occur. If the RJ45 is to be used in more demanding environments, it can be packaged in a protective enclosure suitable for specific applications. Typical applications include RJ45 PushPull V4, RJ45 PushPull V14 and other products.

(Photo: HARTING RJ Industrial ® RJ45 connector)

In what situations should you use the M8 or M12? Compared with common RJ interfaces, the M8 and M12 interfaces have three important advantages: 1) High IP protection level without additional protection base; 2) Very low space requirements; 3) Anti-vibration male/female pin system. This makes them an interface in applications where vibration, contamination or installation space is small. Typical application scenarios include production sites, industrial building wiring, machine and equipment structures, etc.

(Picture: HARTING Circular Connector) Can HARTING ix Industrial replace the RJ45? The third typical Ethernet interface on the market is the relatively new ix-Industrial ® interface, just standardized in 2016 according to IEC 61076-3-124, providing a miniaturized and high-performance alternative with an industrial-grade pin system for the familiar RJ45 solution. With the advent of miniaturization, the trend towards smaller device and component sizes does not stop at interfaces. Image map: HARTING ix-Industrial ® interface

Today, while the RJ45 plug face is still a common interface, it is simply too large in some devices. The socket must be adjusted when it is a larger component in modern industrial cameras and takes up the most space throughout the application. The ix Industrial ® Small Ethernet interface takes this development into account. Compared to the RJ45 socket, the ix interface requires 70% less space in the device, while providing better transmission performance up to 10Gbit/s thanks to the clever shielding, in addition to the robustness provided by the metal locking mechanism. It is an investment safe alternative to the widely known RJ45. Since 2021, the ix Industrial ®, like the RJ before it, has been available as a PushPull interface with IP65/67 protection rating.

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