Programming FCs (Functions) and FBs for S7 Ethernet CPs

Table 5-2 AG_SEND / AG_LSEND Codes

DONE

ERROR

STATUS

Meaning

 

 

 

 

0

1

8F7FH

Internal error, e.g. illegal ANY reference.

 

 

 

e.g. parameter LEN=0

 

 

 

 

0

1

8090H

No module with this address exists or the CPU is in the STOP

 

 

 

mode.

 

 

 

 

0

1

8091H

Logical base address not at a double word boundary.

 

 

 

 

0

1

8092H

In the ANY reference, a type other than BYTE is specified.

 

 

 

(S7-400 only)

 

 

 

 

0

1

80A4H

The communication bus connection between the CPU and CP is

 

 

 

not established. (Only with newer CPU versions)

 

 

 

 

0

1

80B0H

The module does not recognize the data record.

 

 

 

 

0

1

80B1H

The specified length (in the LEN parameter) is incorrect.

 

 

 

 

0

1

80B2H

The communication bus connection between the CPU and CP is

 

 

 

not established.

 

 

 

 

0

1

80C0H

The data record cannot be read.

 

 

 

 

0

1

80C1H

The specified data record is currently being processed.

 

 

 

 

0

1

80C2H

There are too many jobs pending.

 

 

 

 

0

1

80C3H

CPU resources (memory) occupied.

 

 

 

 

0

1

80C4H

Communication error (occurs temporarily and a repetition in the

 

 

 

user program will often remedy the problem).

 

 

 

 

0

1

80D2H

Module base address incorrect.

 

 

 

 

158

SIMATIC NET NCM S7 for Industrial Ethernet

C79000-G8976-C129–06

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Siemens S7 appendix 8F7FH

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.