Siemens SPC3 manual Function Overview

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PROFIBUS Interface Center

SPC3

 

 

 

 

 

 

 

2Function Overview

The SPC3 makes it possible to have a price-optimized configuration of intelligent PROFIBUS-DP slave applications.

The processor interface supports the following processors:

Intel:

80C31, 80X86

Siemens:

80C166/165/167

Motorola:

HC11-,HC16-,HC916 types

In SPC3, the transfer technology is integrated (Layer 1), except for analog functions (RS485 drivers), the FDL transfer protocol (Fieldbus Data Link) for slave nodes (Layer 2a), a support of the interface utilities (Layer 2b), some Layer 2 FMA utilities, and the complete DP slave protocol (USIF: User Interface, which makes it possible for the user to have access to Layer 2). The remaining functions of Layer 2 (software utilities and management) must be handled via software.

The integrated 1.5k Dual-Port-RAMserves as an interface between the SPC3 and the software/application. The entire memory is subdivided into 192 segments, with 8 bytes each. Addressing from the user takes place directly and from the internal microsequencer (MS) by means of the so-alled base pointer. The base-pointer can be positioned at any segment in the memory. Therefore, all buffers must always be located at the beginning of a segment.

If the SPC3 carries out a DP communication the SPC3 automatically sets up all DP-SAPs. The various telegram information is made available to the user in separate data buffers (for example, parameter setting data and configuration data). Three change buffers are provided for data communication, both for the output data and for the input data. A change buffer is always available for communication. Therefore, no resource problems can occur. For optimal diagnostics support, SPC3 has two diagnostics change buffers into which the user inputs the updated diagnostics data. One diagnostics buffer is always assigned to SPC3 in this process.

The bus interface is a parameterizable synchronous/asynchronous 8-bit interface for various Intel and Motorola microcontrollers/processors. The user can directly access the internal 1.5k RAM or the parameter latches via the 11-bit address bus.

After the processor has been switched on, procedural-specific parameters (station address, control bits, etc.) must be transferred to the Parameter Register File and to the mode registers.

The MAC status can be scanned at any time in the status register.

Various events (various indications, error events, etc.) are entered in the interrupt controller. These events can be individually enabled via a mask register. Acknowledgement takes place by means of the acknowledge register. The SPC3 has a common interrupt output.

The integrated Watchdog Timer is operated in three different states: ‘Baud_Search’, ‘Baud_Control,’ and ‘DP_Control’.

The Micro Sequencer (MS) controls the entire process.

Procedure-specific parameters (buffer pointer, buffer lengths, station address, etc.) and the data buffer are contained in the integrated 1.5kByte RAM that a controller operates as Dual-Port-RAM.

In UART, the parallel data flow is converted into the serial data flow, or vice-versa. The SPC3 is capable of automatically identifying the baud rates (9.6 kBd - 12 MBd).

The Idle Timer directly controls the bus times on the serial bus cable.

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V1.3

SPC3 Hardware Description

2003/04

 

Copyright (C) Siemens AG 2003. All rights reserved.

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Contents Simatic NET Page SIM Atic NET Profibus Interface Center SPC3 Hardware DescriptionVersions Release Date ChangesDPBuffer Structure Description of the DP Services Mode RegisterStatus Register Interrupt Controller Watchdog Timer DirectoryAsic Test 11.3 Diagnostics Processing from the System ViewPin Assignment Example for the RS 485 Interface SPC3 Introduction Function Overview Pin Description CmosCPD 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 1CH 1AH1BH 1DHMode Register Asic InterfaceDisstartcontrol Exiting the Offline state Mode Register 1 Mode-REG1, writableSTARTSPC3 EOIStatus Register Fdlindst Status Register Bit15 . .readableInterrupt Controller SPC3 IRR IMRDxout IMR IARBaud Rate Monitoring Watchdog TimerAutomatic Baud Rate Identification Response Time MonitoringPROFIBUS-DP Interface DPBuffer StructureUart RAM Aux-Buffer ManagementSetSlaveAddress SAP55 Description of the DP ServicesSequence for the SetSlaveAddress Utility Parameter Data Structure SetParam SAP61Parameter Data Processing Sequence CheckConfig SAP62 SPC3SlaveDiagnosis SAP60 Diagnostics Processing SequenceSPC3 WriteReadData / DataExchange DefaultSAP Structure of the Diagnostics BufferWriting Outputs Reading Inputs UserWatchdogTimer GlobalControl SAP58ReadInputs SAP56 GetConfig SAP59ReadOutputs SAP57 General Description Hardware InterfaceUniversal Processor Bus Interface Bus Interface Unit BIUXINT/MO Mode Bus Interface V1.3Switching Diagram Principles Low Cost System with 80C32System X86-Mode SPC3 Application with the 80 CApplication with th 80 C Uart Interface SignalsAsic Test Permitted Operating Values Technical DataMaximum Limit 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 Clock pulse 48 Mhz Timing CharacteristicsSYS Bus Interface Clock Pulse TimingST-Vers Min Max Unit ResetTiming in the Synchronous C32-Mode TBDSynchronous Intel-Mode, Processor-Read-Timing Synchronous Intel-Mode, Processor-Write-TimingST-Vers Timing in the Asynchronous Intel Mode X86 ModeParameter Min Max Asynchronous Intel-Mode, Processor-Write-Timing Asynchronous Intel-Mode, Processor-Read-TimingXRD XCS Xready XWR XCS4.1 74.2 Synchronous Motorola-Mode, Processor-Read-TimingSynchronous Motorola-Mode, Processor-Write-Timing Timing in the Asynchronous Motorola-Mode for example, 68HC16XCS Xdsack Asynchronous Motorola-Mode, Processor-Read-TimingAsynchronous Motorola-Mode, Processor-Write-Timing Serial Bus Interface Pulse 48 MHzHousing PQFP-44 Housing SPC3 Hardware Description 13.90 Symbol Min Typ Max AMI-Vers13.65 14.15RTS Profibus InterfacePin Assignment TXDExample for the RS 485 Interface SN65ALS1176Profibus User Organisation AppendixAddresses Technical contact person at ComDeC in Germany10.3.1 SPC3 AMI General Definition of TermsOrdering of ASICs 10.3.2 SPC3 STIntroduction Appendix a Diagnostics Processing in Profibus DPDiagnostics Bits and Expanded Diagnostics StatdiagIdentifier Byte 7 has Etc Identifier Byte 0 has Simatic S5 / COM ET Diagnostics Processing from the System ViewSingle Diagnostics CombiAppendix B Useful Information Data format in the Siemens PLC SimaticPage 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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