Siemens manual Memory Allocation, Memory Area Distribution in the SPC3, 5FFH

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SPC3

PROFIBUS Interface Center

 

 

 

 

 

 

4Memory Allocation

4.1 Memory Area Distribution in the SPC3

The figure displays the division of the SPC3 1.5k internal address area.

The internal latches/register are located in the first 21 addresses. The internal latches/register either come from the controller or influence the controller. Certain cells can be only read or written. The internal work cells to which the user has no access are located in RAM at the same addresses.

The organizational parameters are located in RAM beginning with address 16H. The entire buffer structure (for the DP-SAPS) is written based on these parameters. In addition, general parameter setting data (station address, Ident no., etc.) are transferred in these cells and the status displays are stored in these cells (global control command, etc.).

Corresponding to the parameter setting of the organizational parameters, the user-generated buffers are located beginning with address 40H. All buffers or lists must begin at segment addresses (48 bytes segmentation).

Address

Function

 

 

 

 

 

 

 

000H

Processor parameters

 

internal work cells

 

Latches/register

 

 

 

 

(22 bytes)

 

 

 

016H

Organizational

 

 

 

 

parameters

 

 

 

 

(42 bytes)

 

 

 

040H

DP- buffer:

Data In (3)

*

 

 

 

Data Out (3) *

 

 

Diagnostics (2)

 

 

Parameter setting data (1)

5FFH

 

Configuration data (2)

 

 

Auxiliary buffer (2)

 

 

SSA-buffer(1)

Figure 4.1: SPC3 Memory Area Distribution

Caution:

The HW prohibits overranging the address area. That is, if a user writes or reads past the memory end, 400H is subtracted from this address and the user therefore accesses a new address. This prohibits overwriting a process parameter. In this case, the SPC3 generates the RAM access violation interrupt. If the MS overranges the memory end due to a faulty buffer initialization, the same procedure is executed.

*Data In is the input data from PROFIBUS slave to master Data out is the output data from PROFIBUS master to slave

SPC3 Hardware Description

V1.3

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Copyright (C) Siemens AG 2003 All rights reserved.

 

2003/04

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Contents Simatic NET Page SIM Atic NET SPC3 Hardware Description Profibus Interface CenterRelease Date Changes VersionsStatus Register Interrupt Controller Watchdog Timer Mode RegisterDPBuffer Structure Description of the DP Services DirectoryAsic Test 11.3 Diagnostics Processing from the System ViewPin Assignment Example for the RS 485 Interface SPC3 Introduction Function Overview Cmos Pin DescriptionCPD Cmos with pull down TTLt Schmitt trigger V1.3 Memory Area Distribution in the SPC3 Memory Allocation5FFH Segment Processor Parameters Latches/Register OCH 0DH Significance Write Access0EH 0FH Organizational Parameters RAM 1BH 1AH1CH 1DHAsic Interface Mode RegisterDisstartcontrol STARTSPC3 Mode Register 1 Mode-REG1, writableExiting the Offline state EOIStatus Register Status Register Bit15 . .readable FdlindstSPC3 IRR IMR Interrupt ControllerDxout IAR IMRAutomatic Baud Rate Identification Watchdog TimerBaud Rate Monitoring Response Time MonitoringDPBuffer Structure PROFIBUS-DP InterfaceUart Aux-Buffer Management RAMSetSlaveAddress SAP55 Description of the DP ServicesSequence for the SetSlaveAddress Utility Parameter Data Structure SetParam SAP61Parameter Data Processing Sequence SPC3 CheckConfig SAP62SlaveDiagnosis SAP60 Diagnostics Processing SequenceSPC3 WriteReadData / DataExchange DefaultSAP Structure of the Diagnostics BufferWriting Outputs Reading Inputs GlobalControl SAP58 UserWatchdogTimerReadInputs SAP56 GetConfig SAP59ReadOutputs SAP57 Universal Processor Bus Interface Hardware InterfaceGeneral Description Bus Interface Unit BIUBus Interface V1.3 XINT/MO ModeLow Cost System with 80C32 Switching Diagram PrinciplesSystem X86-Mode Application with the 80 C SPC3Application with th 80 C Uart Interface SignalsAsic Test Maximum Limit Values Technical DataPermitted Operating Values DC-Specifikation of the I/O- DriversTabel 8.3 DC-Specifikation of the I/O- Drivers AC-Specification for the Output DriversCurrent Tabelle 8.5 Leakage current of the output drivers SYS Bus Interface Timing CharacteristicsClock pulse 48 Mhz Clock Pulse TimingTiming in the Synchronous C32-Mode ResetST-Vers Min Max Unit TBDSynchronous Intel-Mode, Processor-Write-Timing Synchronous Intel-Mode, Processor-Read-TimingST-Vers Timing in the Asynchronous Intel Mode X86 ModeParameter Min Max XRD XCS Xready Asynchronous Intel-Mode, Processor-Read-TimingAsynchronous Intel-Mode, Processor-Write-Timing XWR XCSSynchronous Motorola-Mode, Processor-Read-Timing 4.1 74.2Timing in the Asynchronous Motorola-Mode for example, 68HC16 Synchronous Motorola-Mode, Processor-Write-TimingXCS Xdsack Asynchronous Motorola-Mode, Processor-Read-TimingAsynchronous Motorola-Mode, Processor-Write-Timing Pulse 48 MHz Serial Bus InterfaceHousing PQFP-44 Housing SPC3 Hardware Description 13.65 Symbol Min Typ Max AMI-Vers13.90 14.15Pin Assignment Profibus InterfaceRTS TXDSN65ALS1176 Example for the RS 485 InterfaceAddresses AppendixProfibus User Organisation Technical contact person at ComDeC in GermanyOrdering of ASICs General Definition of Terms10.3.1 SPC3 AMI 10.3.2 SPC3 STDiagnostics Bits and Expanded Diagnostics Appendix a Diagnostics Processing in Profibus DPIntroduction StatdiagIdentifier Byte 7 has Etc Identifier Byte 0 has Single Diagnostics Diagnostics Processing from the System ViewSimatic S5 / COM ET CombiData format in the Siemens PLC Simatic Appendix B Useful InformationPage Siemens Aktiengesellschaft

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.
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