How to customize the appropriate Industrial Ethernet standard?

Industrial Ethernet plays an extremely important role in serial-based fieldbus in factory automation and process automation, grid infrastructure and building automation products. Industrial Ethernet connects programmable logic controllers (PLCs) to field-mounted sensors and actuators, input and output modules, and bus couplers and drivers.

Unfortunately, product manufacturers have not yet agreed on a common industrial Ethernet standard; instead, the field is fragmented and there are more than 30 factory-deployed standards. Many leading manufacturers have defined a specific industrial Ethernet standard to meet their needs, often from one of their existing serial-based fieldbuses.

Most industrial Ethernet standards require a separate device solution. Figure 1 depicts a solution that includes a microcontroller unit (MCU) or microprocessor unit (MPU) and a separate industrial Ethernet device, media access controller (MAC). The MAC supports real-time Ethernet frame processing, which is technically referred to as "instant" or "through" frame processing. Therefore, most industrial Ethernet standards require application specific integrated circuits (ASICs) or field programmable gate arrays (FPGAs) to handle real-time Ethernet frame processing.

Figure 1: The traditional way to add Industrial Ethernet

Adding one of the Industrial Ethernet standards to one product and then authenticating the communication interface through a certification authority is challenging. However, most manufacturers will need to support multiple industrial Ethernet protocols to sell their equipment to multiple end customers using different standards. Building a product with two, three or more Industrial Ethernet standards adds additional complexity to product development. One possible solution is to add multiple Ethernet standards to one product to create separate printed circuit board (PCB) modules for each Industrial Ethernet standard. You can plug one of the modules into the motherboard at a time. However, there is always a need to change the hardware to exchange protocols. This makes the product more complex in processing bill of materials (BOM), requires multiple PCB module production, and access to multi-chip solutions.

To solve this problem, I suggest you check out TI's SitaraTM ARM processor. These application processors feature an integrated programmable real-time unit and Industrial Communication Subsystem (PRU-ICSS) that can read multi-protocol Industrial Ethernet. Let us review the key differences and advantages of this solution.

The PRU is a programmable real-time kernel. It loads the Industrial Ethernet protocol firmware while the device is running. The PRU-ICSS protocol firmware versions are available for EtherCAT, PROFINET, SERCOS III, EtherNet / IP and Ethernet Powerlink. Protocol firmware performs real-time critical tasks such as instant or pass-through frame processing. Note that these are the real-time missions I have previously mentioned operating in an ASIC or FPGA, but can now be handled by PRU-ICSS (see Figure 2).

Figure 2: TI integrates multi-protocol Industrial Ethernet into the Sitara processor

PRU-ICSS, along with scalability and a powerful ARM core (Cortex-A8, A9 or A15, depending on the different Sitara processor families) allows you to build a single-chip solution for products in factory automation, which then passes Flexible PRU-ICSS firmware exchange is expressed in the Multi-Industry Ethernet standard. PRU-ICSS addresses software multi-protocol support issues (programmable solutions in PRU-ICSS) rather than hardware issues like multiple ASICs or FPGAs. Software-based solutions have many advantages, including the ability to release new protocol standards to add new features or new protocols.

In addition to these advantages and the ability to handle real-time critical Industrial Ethernet processing tasks, PRU-ICSS can also:

No external ASIC and FPGA requirements are required.

Reduce BOM and PCB space to reduce costs.

Fast I/O data exchange between ARM processors is achieved through an internal high-speed memory bus interface.

The PRU-ICSS firmware is exchangeable while the device is running. Figure 3 shows the five most common industrial Ethernet standards in factory automation, all of which are supported by TI firmware for Sitara devices.

Figure 3: Multi-Protocol Demonstration Setup - TMDSICE3359 The AM335x processor development platform expresses the top five industrial Ethernet standards

I recently recorded a one-hour webinar on the Sitara processor multi-protocol Industrial Ethernet for more information on this topic. You can access the webinar by logging into myTI.

other information:

For more information on the five Industrial Ethernet standards, read the Industrial Ethernet blog series.

Familiar with all industrial communication protocols supported by TI processors.

Download Multi-Protocol Industrial Ethernet with PRU-ICSS in Industrial Automation Reference Design (TIDEP0032).

Discovered the AM3359 processor industrial communication engine development platform.

KNB1-63 Miniature Circuit Breaker

KNB1-63 Mini Circuit breakers, also named as the air switch which have a short for arc extinguishing device. It is a switch role, and also is a automatic protection of low-voltage electrical distribution. Its role is equivalent to the combination of switch. Fuse. Thermal Relay and other electrical components. It mainly used for short circuit and overload protection. Generally, According to the poles, mini Circuit breaker can be divided into 1P , 1P+N , 2P, 3P and 4P.

KNB1-63 Miniature Circuit Breaker,Electronics Miniature Circuits Breaker,Automatic Miniature Circuit Breaker,Mini Circuit Breaker

Wenzhou Korlen Electric Appliances Co., Ltd. , https://www.korlen-electric.com