Configuring Communication Connections

4.7.5Free UDP Connection

Program-Controlled Addressing

A free UDP connection allows program-controlled addressing of the communication partner. Communication between two nodes on Industrial Ethernet has the following properties:

SData transfer is bi-directional; in other words it is possible to send and receive on the UDP connection at the same time.

SThe local node is specified in the configuration. The remote node is entered in the job header of the job buffer by the user program when it calls AG_SEND. This allows any node on Ethernet/LAN/WAN to be reached.

SThe IP address and the port of the sender can be read from the job header of AG_RECV.

SIMATIC S7 station with Ethernet CP

User data area

Ethernet node (unspecified)

 

 

Job buffer

 

send

 

 

 

 

 

 

 

 

 

Job header

 

 

receive

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

User data

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

unspecified UDP connection

receive

send

Figure 4-24 Sending and Receiving on an Unspecified UDP Connection with Programmed Addressing

Amounts of Data

Refer to the manual /1/ supplied with the Ethernet CP for the number of UDP connections supported by the Ethernet CP. The number of connections per station can be increased by adding more CPs.

Up to 2042 bytes of user data can be transferred per job buffer. The job header uses an additional 6 bytes.

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SIMATIC NET NCM S7 for Industrial Ethernet

Release 6/2003

C79000–G8976–C129–07

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Siemens NCM S7 appendix Free UDP Connection, Program-Controlled Addressing

NCM S7 specifications

Siemens NCM S7, which stands for Siemens Network Control Module for the S7 series, represents a significant advancement in industrial automation technology. This robust control system is designed to enhance productivity and efficiency in various manufacturing processes. Its primary purpose is to facilitate seamless communication between field devices and higher-level control systems, ensuring that processes run smoothly and effectively.

One of the main features of the Siemens NCM S7 is its exceptional connectivity. The module is equipped with integrated network capabilities that support various communication protocols such as Ethernet, Profibus, and Profinet. This versatility allows it to work with a wide variety of devices, enabling data exchange across different automation levels. The ability to connect to cloud services is another standout feature, allowing users to access real-time data remotely for monitoring and analytics.

The NCM S7 also boasts advanced data processing capabilities. With powerful processing units, it can execute complex control algorithms and manage large volumes of input and output data in real time. This is essential for industries that require precise control over their processes, such as automotive, food and beverage, and pharmaceuticals. The system’s high-speed memory and processing speed ensure that it can handle demanding tasks without lag.

In terms of technology, the Siemens NCM S7 leverages state-of-the-art cybersecurity features. As industrial control systems increasingly become targets for cyber threats, the NCM S7 incorporates advanced security protocols to safeguard sensitive data and ensure the integrity of the control processes. This includes features such as secure communication channels and user authentication.

Another key characteristic of the NCM S7 is its flexibility. The system can be easily scaled and adapted to meet the specific needs of various applications. Users can increase the number of input/output channels or integrate additional modules without significant downtime. This adaptability makes the NCM S7 an ideal choice for both small-scale operations and large industrial environments.

Moreover, the user-friendly interface simplifies configuration and programming tasks, allowing engineers and technicians to set up and troubleshoot the system with ease. Siemens has also invested in comprehensive support and training resources to help users maximize the system’s potential.

In conclusion, the Siemens NCM S7 stands out as a pivotal element in modern industrial automation. With its robust connectivity, advanced data processing capabilities, cybersecurity features, and flexibility, it empowers businesses to optimize their production processes and embrace the future of Industry 4.0.