ReadInputs SAP56, ReadOutputs SAP57, GetConfig SAP59

PROFIBUS Interface Center			SPC3
PROFIBUS Interface Center			SPC3


Bit	Designation	Significance
0	Reserved
1	Clear_Data	With this command, the output data is deleted in ‘D’ and is changed
		to ‘N.’
2	Unfreeze	With „Unfreeze,“ freezing input data iscancelled.
3	Freeze	The input data is fetched from ‘N’ to ‘D’and „frozen“. New input data
		is not fetched again until the master sends the next ‘Freeze’
		command.
4	Unsync	The „Unsync“ command cancels the „Sync“ command.
5	Sync	The output data transferred with a WRITE_READ_DATA telegram is
		changed from ‘D’ to ‘N.’ The following transferredoutput data is kept
		in ‘D’ until the next ‘Sync’ command is given.
6,7	Reserved	The „Reserved“ designation specifies hat these bits are reserved for
		future function expansions.

Figure 6.15: Data Format for the Global_Control Telegram

If the Control_Comand byte changed at the last received Global_Control telegram, SPC3 additionally generates the ‘New_GC_Command’ interrupt. During nitialization, SPC3 presets the ‘R_GC_Command’ RAM cell with 00H. The user can read and evaluate this cell.

So that Sync and Freeze can be carried out, these functions must be enabled in the mode register.

6.2.7 Read_Inputs (SAP56)

SPC3 fetches the input data like it does for the Write_Read_Data Telegram. Prior to sending, ‘N’ is shifted to ‘D,’ if new input data are available in ‘N.’ For ‘Diag.Freeze_Mode = 1,’ there is no buffer change.

6.2.8 Read_Outputs (SAP57)

SPC3 fetches the output data from the Dout buffer in ‘U’. The user must preset the output data with 0’‘ during start-up so that no invalid data can be sent here. If there is a buffer change from ‘N’ to ‘U’(through the Next_Dout_Buffer_Cmd) between the first call-up and the repetition, the new output data is sent during the repetition.

6.2.9 Get_Config (SAP59)

The user makes the configuration data available in the Read_Cfg buffer. For a change in the configuration after the Check_Config telegram, the user writes the changed data in the Cfg buffer, sets ‘EN_Change_Cfg_buffer = 1’ (see Mode-Register1), and SPC3 then exchanges the Cfg buffer for the Read_Cfg buffer. (See Section 3.2.3.) If there is a change in the configuration data (for example, for the modular DP systems) during operation, the user must return with ‘Go Offline’ (see Mode Register1) to ‘Wait_Prm’ to SPC3.

Page 36	V1.3	SPC3 Hardware Description
2003/04		Copyright (C) Siemens AG 2003. All rights reserved.

SPC3 specifications

Siemens SPC3 is a state-of-the-art solution designed to enhance industrial automation, providing businesses with a robust platform for managing complex processes efficiently. This device epitomizes Siemens' commitment to innovation, blending cutting-edge technology with user-friendly features to deliver optimized performance across various applications.

One of the standout features of the Siemens SPC3 is its advanced processing capabilities. Equipped with high-performance processors, it can handle various tasks simultaneously, ensuring seamless operation even in demanding environments. This performance is complemented by enhanced memory capacity, which allows for increased data handling and improved execution speed, crucial for real-time monitoring and control applications.

The Siemens SPC3 also integrates a modular design, enabling flexibility and scalability. This characteristic allows users to customize their systems according to specific operational needs, adding or removing components as required. This adaptability is particularly beneficial for businesses that aim to scale their operations without incurring the substantial costs associated with overhauling existing systems.

Furthermore, the SPC3 employs the latest communication technologies, ensuring interoperability with various devices and systems. It supports industry-standard protocols, facilitating efficient data exchange between components. This connectivity is vital for establishing smart factories and enhancing overall productivity by creating a unified ecosystem.

Another significant aspect of the Siemens SPC3 is its focus on security. As cyber threats in industrial settings become increasingly sophisticated, Siemens prioritizes safeguarding user data and system integrity. The SPC3 incorporates advanced security features, including encryption and access control measures, to protect against unauthorized access and ensure data confidentiality.

Siemens has also emphasized ease of use in the SPC3. The interface is designed to be intuitive, allowing operators to navigate and configure the system effortlessly. Coupled with comprehensive software tools, users are empowered to implement changes swiftly while minimizing downtime.

In terms of energy efficiency, the SPC3 incorporates technologies that allow for optimized energy consumption, aligning with sustainability goals prevalent in today’s industries. By reducing energy waste, businesses not only lower operational costs but also contribute to environmental conservation.

In summary, Siemens SPC3 represents a significant advancement in industrial automation technology. Its high-performance processing, modular adaptability, advanced communication capabilities, robust security measures, and user-friendly design make it an ideal choice for businesses striving for efficiency and innovation in their operations. The SPC3 is more than just a control device; it is a comprehensive solution that meets the evolving demands of modern industries.

Siemens SPC3 manual ReadInputs SAP56, ReadOutputs SAP57, GetConfig SAP59

Models: SPC3

PROFIBUS Interface Center

SPC3