Communication via Ethernet CPs in S7 Stations

SS7 communication

S7 communication forms a simple and efficient interface between SIMATIC S7 stations and PGs/PCs using communication function blocks.

SS5-compatible communication with SEND/RECEIVE interface

Depending on the CP type, the SEND/RECEIVE interface allows program-controlled communication on a configured connection from a SIMATIC S7 PLC to another SIMATIC S7 PLC, to a SIMATIC S5 PLC, to PCs/PGs, and to any other station.

Depending on the CP type, the following communications services are available on the SEND/RECEIVE interface:

ISO Transport

optimized for top performance at the self-contained manufacturing level

TCP/IP for internetwork communication with ISO-on-TCP connections (RFC 1006), TCP connections and UDP datagram service (including broadcast / multicast).

Sending E-mail

The controller is capable of sending messages triggered by process events (refer to the IT-CP manual for details /5/).

SS5-compatible communication with FETCH/WRITE services (server)

The FETCH/WRITE services (server) allow direct access to the system memory areas on the SIMATIC S7 CPU from SIMATIC S5 or from devices of other ranges.

Depending on the CP type, the following communications services are available for FETCH/WRITE access:

ISO Transport

optimized for top performance at the self-contained manufacturing level

TCP/IP for internetwork communication with ISO-on-TCP connections (RFC 1006), TCP connections.

SPROFInet communication

PROFInet is a standard of the PROFIBUS Users organization defining a heterogeneous communications and engineering model.

An S7-300 station equipped with a CP capable of PROFInet can be interconnected as a PROFInet component in SIMATIC iMap.

TCP connections are used for the PROFInet communication. For more detailed information on PROFInet, refer to /23/.

SHTML process control

With an IT-CP, use the supplied functions and HTML pages to query important system data using a Web browser (you should also refer to the instructions on the IT-CP /5/).

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SIMATIC NET NCM S7 for Industrial Ethernet

C79000-G8976-C129–06

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Siemens appendix S7 communication, S5-compatible communication with SEND/RECEIVE interface, PROFInet communication

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.