Glossary

Functions (FCs)

STEP 7 code blocks of the type ”function”.

Gateway

Intelligent connectivity device that connects local area–> networks of different types at the ISO Layer 7 level.

Industrial Ethernet

A LAN system complying with IEEE 802.3 (ISO 8802–2)

Multicast

A multicast is like ”calling all group stations”: Using one multicast frame, you can reach all the nodes that belong to the multicast group and that are prepared to receive frames.

NCM S7 for Industrial Ethernet

Configuration software for configuration and diagnostic functions on an Ethernet CP.

NCM S7 for PROFIBUS

Configuration software for configuration and diagnostic functions on a

PROFIBUS CP.

Network

A network consists of one or more interconnected –> subnets with any number of –> nodes. Several networks can exist side by side.

PG operation

A mode of the PROFIBUS/Ethernet CP in which the SIMATIC S7-CPU is pro- grammed, configured or diagnosed over PROFIBUS/Ethernet. This mode is handled by the S7 functions.

Process image

The process image is a special memory area in the programmable logic control- ler. At the start of the cyclic program, the signal states of the input modules are transferred to the process input image. At the end of the cyclic program, the pro- cess output image is transferred as a signal state to the output modules.

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Siemens appendix Gateway, Multicast, NCM S7 for Industrial Ethernet, NCM S7 for Profibus, Network, PG operation

S7 specifications

The Siemens S7 series represents a cornerstone in the realm of programmable logic controllers (PLCs), developed by Siemens, a leading company in industrial automation. Widely used across various industries, the S7 series offers robust solutions for controlling machinery and processes, thanks to its reliable performance, flexibility, and scalable architecture.

One of the key features of Siemens S7 PLCs is the modularity of their design. Each system can be configured to meet specific application requirements due to the ability to mix various input/output modules, CPUs, and communication processors. This modular approach allows for the customization of systems to suit diverse automation tasks, providing end users with the adaptability required for modern manufacturing environments.

The S7 series encompasses several models, including the S7-1200, S7-300, and S7-1500. The S7-1200 is particularly suited for small to medium-sized applications, offering a compact design and integrated communication interfaces. In contrast, the S7-300 is designed for more extensive and complex control systems, making it ideal for large-scale industrial applications. The S7-1500 stands out with its advanced performance metrics, rich feature set, and high-speed processing capabilities, making it perfect for demanding applications that require real-time control and extensive data handling.

Siemens also emphasizes the importance of communication technologies within the S7 series. With options such as PROFINET, PROFIBUS, and EtherNet/IP, the S7 PLCs can seamlessly integrate into existing automation infrastructures, ensuring smooth data exchange between devices. The incorporation of web-based technologies and cloud connectivity further enables remote monitoring and control of systems, enhancing operational efficiency.

Another notable characteristic of Siemens S7 PLCs is the use of TIA Portal (Totally Integrated Automation Portal), an innovative software platform that simplifies the engineering process. TIA Portal allows users to program, configure, and diagnose their automation devices in a single environment, reducing setup times and improving productivity.

In conclusion, the Siemens S7 series stands out due to its modular design, range of models suitable for various applications, advanced communication technologies, and user-friendly programming software. This combination of features and characteristics makes S7 PLCs a preferred choice for industries seeking reliable and efficient automation solutions. As industrial demands continue to evolve, Siemens S7 PLCs remain at the forefront, adapting to technological advancements and setting benchmarks in the automation field.