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RFCs (Requests for Comments) are technical documents that cover topics such as Ethernet architecture, protocol design, email header design, etc. - was described in detail RFC 1006 "ISO Transport Service on top of the TCP" is an extension of the TCP protocol. This means that in addition to TCP data, a special transmission service (ISO service) can also be provided between the two parties to the communication. TCP protocol
When data is transmitted using the TCP protocol, the transfer is focused on the data stream. Therefore, there is no information about the length of the data or the start and end of the data. This is not a problem for the sender because it knows the number of bytes to send. But for the receiver, it has no way of knowing when the message will start, when it will end, and when the next message will be sent. RFC 1006 Protocol Extension
In many automation applications, it is essential to focus on job information. Blocks of information are sent by the sender over a connection, and their integrity is confirmed by the receiver. In order to make such an acknowledgment, RFC1006 specify that the data must be preceded by a header. RFC1006 thus provides an application that establishes a data stream according to the TCP protocol, but is message-oriented.
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SIMATIC S7-1200 compact CPU
Installation
1. Remove the backplane bus cover
2. Insert the SM onto the standard mounting rail
3. Push the SM to the adjacent module
4. Lock the standard rail mounting clip
5. Push the latch used to connect the bus connector to the left so that the bus pin is connected to the adjacent module
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Does the power supply cable between the Siemens soft starter and the motor need to be shielded?
For 3RW soft starters, it is sufficient to use an unshielded main loop cable between the motor and the 3RW soft starter.
The main reasons are as follows:
The frequency of the power supply on the motor terminals is stabilized at 50 or 60 Hz throughout the operation of the soft starter
After the soft start is completed, the main ...
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Siemens PLC has six common fault-prone points
1. The first type of fault point is also the location of the most faults in relays and contactors
For example, in the daily maintenance of the PLC control system of a production line, the largest consumption of electrical spare parts is all kinds of relays or air switches. In addition to the quality of the product itself, it is mainly due to the fact that the on-site environment is more ...
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What do you need to pay attention to when selecting Siemens inverters?
When selecting Siemens frequency converters, the following points should be determined:
1) The purpose of frequency conversion; constant pressure control or constant current control, etc.;
2) The load type of the Siemens inverter; Such as vane pumps or positive displacement pumps, pay special attention to the performance curve of the load, the performance curve determines the application of the ...
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Siemens actively supports Shanghai and the Yangtze River Delta
Shanghai, the historic "Pearl of the Orient" is famous for its prosperity, openness and fashion, and is the engine of China's economic growth. Since 1904, when the first permanent office in China was established in Shanghai, Siemens has been deeply rooted in this land of innovation and entrepreneurship.
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How to erase the password using a memory card
If the customer has forgotten the password of the S7-1200 that was previously set, the program and password inside the S7-1200 cannot be erased through "Factory Reset", and the only way to erase the password is to use a memory card. The detailed steps are as follows:
Power off the S7-1200 device
Insert a ...
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Siemens 3RW44 soft starter commonly used fault diagnosis methods
(1) The soft starter display will display fault information
(2) Soft starter ES software diagnostic menu
(3) read data record 92, and data record 92 is diagnostic information
(4) Call the function block SFC13 to read out the fault information of the soft starter, but the premise is that the fault information of the soft starter is read out in the Soft St ...
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Siemens launches the Zero Carbon Pioneer Program in China
Siemens China today officially launched the "Zero Carbon Pioneer Program", announcing the company's clear policy and action plan for low-carbon development. Siemens proposes to use digital innovation and cross-domain knowledge and experience to work with all parties to create a green ecology in China and empower the creation of end-to-end zero-carbon ...
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Siemens S7-200 SMART Power Requirements & Calculations
The S7-200 SMART CPU module offers 5VDC and 24VDC power supplies:
The CPU has an internal power supply that is used to power the CPU, expansion modules, signal boards, and other 24 VDC user power needs. Use the following information as a guide to determine how much the CPU can provide for the configuration ...
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Siemens Intelligent Power Distribution won the "Samsung Supplier" of the 2022 Supplier Composite Index SCI
On July 5th, the 8th Global Shenzhen Business Conference and Mining and Construction Consortium Conference was successfully held in Shenzhen, and the results of the 2022 Supplier Induction Index SCI evaluation were released on the spot.
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Siemens brought innovative fire protection products to the 19th China International Fire Protection Exhibition
With the theme of "Perfect Space, Safety First", Siemens participated in the 19th China World Fire Equipment Skills Exchange Expo (China World Fire Protection Exhibition), showing a full range of fire explorers, emergency dispersion and lighting systems, intact subsystem solutions, and wine ...
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Siemens and HBIS Group have comprehensively deepened their cooperation on digital and low-carbonization
Siemens today signed a strategic collaboration agreement with Shenzhen Liye Group Co., Ltd. (Liye Group). The two ends will take the construction of Liye Group's new lithium battery industrial park as the key, and further deepen the in-depth cooperation between the two ends in the fields of digitalization, low-carbonization, and digital talent training.
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Siemens joins hands with COFCO Great Wall to create a benchmark for intelligent manufacturing in the food and beverage industry
Siemens and COFCO Great Wall Wine Co., Ltd. (COFCO Great Wall) today signed a strategic collaboration agreement at the "Siemens Food & Beverage Career Ecology Summit", which will establish a strategic collaboration relationship in the field of food and beverage professional intelligent production and Internet of Things, and jointly build a strategic cooperation agreement suitable for COFCO Great Wall and even China.
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Siemens s7-200 SMART interrupt command
The S7-200 SMART series of programmable controllers has up to 38 interrupt sources (9 reserved), which are divided into three categories: communication interrupts, input/output (I/O) interrupts, and time-based interrupts.
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Innomotics, Siemens' industry-leading electric motor and large drive company, is about to be founded
Innomotics, an industry-leading electric motor and large drive company, is about to be established from the ground up. Siemens is in the process of consolidating its activities in the areas of low- to high-voltage motors, gear motors, medium-voltage drives and motor spindles into the company. Its business portfolio includes innovative solutions, digital products ...
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Siemens introduces the Symphony Pro platform
Siemens Digital Industries Software recently launched the Symphony™ Pro channel, which further expands the functionality of the original Symphony mixed-signal verification capabilities to support the new Accellera standardized verification methodology with a comprehensive and intuitive visual debugging integration environment.
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Siemens supports the large-scale application of Desktop Metal in the industrial 3D printing industry
A new partnership was recently entered into between Siemens (FWB: SIE) and Desktop Metal (NYSE: DM, Chinese Desktop Metal). This transaction will facilitate the integration of Siemens' skills into Desktop Metal's 3D printers and will help it further realize the digital ...
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What is the bypass operation of the 3RW series soft starter? How to choose a bypass contactor?
After the 3RW series soft starter is started, there are two main operation methods: continuous operation and bypass operation. At this time, the thyristor is in a fully conductive state, and the system enters a constant speed operation state. Here, we advocate that the user should choose the bypass method to operate, that is, when the starting is completed to reach the full voltage ...
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Siemens Electric Products China Headquarters was officially upgraded to China and East Asia Headquarters
Siemens announced that from October 1, 2022, its Siemens Electric Products China headquarters in Gusu will be officially upgraded to China and East Asia headquarters, and its responsibilities will be extended to cover the business in East Asia, including Korea and Japan. The upgrade has been fully supported by the Gusu Municipal People's Government ...
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Siemens supports the machine tool industry in exploiting the potential of data
This year, Siemens will present itself at the EMO 2021 in Milan under the theme of "Digitalization of Machine Tools – Data Empowerment and Unlimited Opportunities", and at the Siemens Machine Tool Days held at the same time, it will fully demonstrate how the machine tool profession can fully exploit the potential of data to improve production efficiency. By putting practice ...
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