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In industrial automation, the most commonly used is actually profinet, industrial equipment through the configuration, a network cable can achieve reliable real-time data sending or receiving (1ms or shorter), profinet is similar to profibus+ethernet. However, for ordinary computers, profinet communication with ABB robots cannot be realized, and only socket communication can be used.
So, how to understand tcp/ip and socket?
TCP and UDP belong to the transport layer and are jointly installed on the IP layer (network layer). The IP layer is mainly responsible for the transmission of packets between nodes, or network devices, or computers (End to End), regardless of application. Therefore, TCP and UDP protocols add ports on top of them, and ports identify an application program on a node.
In addition to adding port information, the UPD protocol does not process any data at the IP layer. The TCP protocol also adds more complex transmission controls, such as a sliding Slice Window, and receive acknowledgement and resend mechanisms to achieve reliable transmission of data.
Sockets are not necessarily related to TCP/IP. When the socket programming interface is designed, it is hoped that it can also adapt to other network protocols. Therefore, the emergence of socket is just to make it easier to use the TCP/IP protocol stack, which abstracts TCP/IP and forms several basic functional interfaces, such as socketcreate, socketlisten, socketaccept and so on.
If a program creates a socket and listens on port 4002, it claims ownership of port 4002 to the TCP/IP stack, and then all TCP packets destined for port 4002 are forwarded to the socket layer to the program.
In addition, TCP/IP protocol not only refers to the two protocols of TCP and IP, but refers to a protocol cluster composed of FTP, SMTP, TCP, UDP, IP and other protocols, just because the TCP protocol and IP protocol are the most representative in the TCP/IP protocol, so it is called TCP/IP protocol.
Pulse processing and control:
It is usually equipped with an input interface for receiving external pulse signals, which can count the number of pulse signals, and measure their frequency, period, etc.
It may provide processing functions for input pulse signals, such as filtering, frequency conversion, etc.
Programming and configuration:
Supports programming and configuration, allowing users to set input channel parameters and behaviors according to application requirements.
Flexible configuration options enable it to adapt to different generator and application requirements.
Real-time performance and alarm function:
Provides real-time data processing and response capabilities to meet the stringent requirements of industrial automation.
When the pulse signal status or parameters exceed the preset range, alarms or notifications can be generated in order to respond to problems in a timely manner.
Protection function:
As an excitation controller module, it has comprehensive protection functions, such as over-current protection, under-voltage protection, over-temperature protection, etc., to ensure the safe operation of the generator.
Application field
The module can be widely used in power, chemical, steel, paper, oil and gas and other industries in the automation control system. Its high performance, high reliability and flexibility make it an indispensable control component in these industries.
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