Installing and Starting the Ethernet CP with STEP 7

Table 2-1 Settings in the “Options” Tab , continued

 

Option

Meaning / Effect

 

 

 

S

Individual Network Settings

Here, you can make fixed network settings, when necessary. As

 

 

default, “Automatic Setting” is selected and this setting generally

 

 

guarantees problem-free communication in most situations.

 

 

If problems occur in communication (for example, when connections

 

 

are not established or when there are often disturbances on the

 

 

network), the reason may be that the selected or automatic network

 

 

settings are not suitable. You can then select a network setting to suit

 

 

your network configuration.

 

 

 

 

S

Send Keepalives for

Here, you can set the interval at which keepalives are sent to the

 

Connections

partner of a communications connection. This setting decides the

 

 

latest time after which the failure of a communications partner is

 

 

detected.

 

 

 

For all connection-oriented services, the Ethernet CP is configured so

 

 

that keepalives are sent. This guarantees that connections are

 

 

closed if a communications partner fails and that the connection

 

 

resources are released. The setting made here applies to all TCP

 

 

and ISO-on-TCP connections operated via the CP; a

 

 

connection-oriented setting is not possible.

 

 

Possible values:

 

 

 

Default Setting:

30 seconds

 

 

Turn keepalives off:

0 seconds

 

 

Maximum value:

65535 seconds

 

 

Notes / Recommendations:

 

 

 

Remember that the keepalive mechanism can keep underlying

 

 

connections established (for example, an ISDN telephone

 

 

connection) although no user data are actually being transmitted. If

 

 

this is not required, set the interval so high that the underlying

 

 

connection is closed down when no further user data are sent before

 

 

a keepalive is sent.

 

 

 

 

 

SIMATIC NET NCM S7 for Industrial Ethernet

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Siemens S7 appendix Default Setting

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.