Communication via Ethernet CPs in S7 Stations

Configuring S7 Connections

Create S7 connections to use S7 communication for data exchange between two SIMATIC S7 stations.

For more detailed information, refer to the STEP 7 Description /6/ /8/.

Notice

S7 connections via routers are supported only within a STEP 7 project but not between partners in different STEP 7 projects of a multiproject!

Interface in the User Program of the S7 Station

You use SFBs (for S7-400) and FBs (for S7-300) in the user program.

 

Block Type

Client

Server

Described in

 

 

 

 

 

 

SFB / FB12

 

BSEND

x

STEP 7

 

 

 

 

 

Documentation /9/

SFB / FB13

 

BRCV

 

x

 

 

 

 

 

 

 

 

 

SFB / FB15

 

PUT

x

1)

 

SFB / FB14

 

GET

x

1)

 

SFB / FB8

 

USEND

x

 

 

 

 

 

 

 

SFB / FB9

 

URCV

x

 

 

 

 

 

 

 

SFC / FC62

 

CONTROL (S7-400) /

x

x 2)

 

 

 

C_CNTRL (S7-300)

 

 

 

 

 

 

 

 

 

1)you do not need to configure a connection on the server

2)for S7-300

Notice

Please remember the following points regarding data consistency in your user pro- gram:

In the CPU of the S7 station, the read or written information is taken from the S7 user program into the operating system or copied from the operating system to the S7 user program in blocks of 8 or 32 bytes (depending on the firmware version).

If information in the word or double-word format is located across such bounda- ries, data inconsistency may arise during transmission using S7 communication!

For more detailed information, refer to the STEP 7 documentation /9/.

SIMATIC NET NCM S7 for Industrial Ethernet

27

Release 6/2003

C79000–G8976–C129–07

Page 27
Image 27
Siemens NCM S7 appendix Configuring S7 Connections, Interface in the User Program of the S7 Station

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.