Contents

1	Communication via Ethernet CPs in S7 Stations		13
	1.1	Industrial Ethernet	14
	1.2	SIMATIC S7 Communication with S7 Ethernet CPs	15
	1.3	PG/OP Communication via Industrial Ethernet	19
	1.3.1	PG Communication with STEP 7 over Industrial Ethernet	21

1.3.2OP Operation: Connecting Operator Interface Devices via Industrial

Ethernet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

1.4	S7 Communication on Industrial Ethernet	23
1.5	S5-compatible Communication (SEND/RECEIVE Interface)	27
1.6	FETCH/WRITE Services (Server)	30
1.7	Networking Stations with STEP 7	31
1.7.1	Network/Project Variant: One Subnet – One Project	33

1.7.2Network/Project Variant: SIMATIC S5 and Non-SIMATIC Devices

		on the Subnet	34
	1.7.3	Network/Project Variant: Two or More Subnets – One Project	35
	1.7.4	Network/Project Variant: One Subnet – More Than One (Sub)Project . . .	36
	1.7.5	Network/Project Variant: Several Subnets in Several (Sub) Projects . . . .	39
	1.7.6	Network/Project Variant: Connections between Subnets (TCP/IP)	41
2	Installing and Starting the Ethernet CP with STEP 7		43
	2.1	General Information About the NCM S7 for Industrial Ethernet Option . .	44
	2.2	Procedure	45
	2.2.1	Creating an Industrial Ethernet Subnet	46
	2.2.2	Entering an Ethernet CP in the Hardware Configuration	49
	2.2.3	Displaying the Network Attachments of a Station	52
	2.2.4	Setting Further CP Properties	54
	2.2.5	“Substitute Objects” in the STEP 7 Project	60
	2.2.6	Configuring Communication Services	63
	2.3	Assigning Addresses for the First Time (Applies to Latest CPs)	64
	2.3.1	Addressing by Selecting the Target System in the SIMATIC Manager . . .	65
	2.3.2	Addressing using the Properties Dialog in HW Config or NetPro	68
	2.4	Downloading the Configuration Data to the Target System	69
3	SEND/RECEIVE Interface in the User Program		73
	3.1	How the SEND/RECEIVE Interface Works on the CPU	74
	3.2	Programming the SEND/RECEIVE Interface	75
	3.3	Data Exchange S7 CPU <–> Ethernet CP	78
	3.4	Additional Information	80
	3.4.1	Programming Data Transfer on TCP Connections	80
	3.4.2	Recommendations for Use with a High Communications Load	81
4	Configuring Communication Connections		83
	4.1	Procedure	84

10	SIMATIC NET NCM S7 for Industrial Ethernet
	C79000-G8976-C129–06

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.

Siemens S7 appendix Contents

Models: S7

S7 specifications