Timing Characteristics, SYS Bus Interface

PROFIBUS Interface Center	SPC3

8.5 Timing Characteristics

The following is generally applicable: All signals beginning with ‘X’ are ‘low active’. All signal runtimes are based on the capacitive loads specified in the table above.

8.5.1 SYS Bus Interface

Clock Pulse:

No.	Parameter	MIN	MAX	Unit


	Clock pulse 48 Mhz :
1	Clock High Time	6.25	14.6	ns
2	Clock Low Time	6.25	14.6	ns
3	Rise Time		4	ns
4	Fall Time		4	ns

Clock Pulse Timing:

	TCLH
	1
CLK	2,4V
	0,6V
	3

TCLL

Distortions in the clock pulse signal are permitted up to a ratio of 40:60. At a threshold of 1.5 or 3.5 V:

Interrupts:

No.	Parameter	MIN	MAX	Unit


1	Interrupt Inactive Time (for EOI_Timebase = 0)	1	1	μs

	Interrupt Inactive Time	1	1	ms

X/INT

EOI

After acknowledging an interrupt with EO1, a min. of 1 us or 1 ms is expected in SPC3 before a new interrupt is output.

Page 46	V1.3	SPC3 Hardware Description
2003/04		Copyright (C) Siemens AG 2003. All rights reserved.

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Siemens SPC3 manual Timing Characteristics, SYS Bus Interface, Clock pulse 48 Mhz, Clock Pulse Timing, Interrupts

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.

Contents

Simatic NET Page SIM Atic NET Profibus Interface Center SPC3 Hardware Description Versions Release Date Changes Mode Register Status Register Interrupt Controller Watchdog TimerDPBuffer Structure Description of the DP Services Directory 11.3 Diagnostics Processing from the System View Asic TestPin Assignment Example for the RS 485 Interface SPC3 Introduction Function Overview Pin Description Cmos CPD Cmos with pull down TTLt Schmitt trigger V1.3 Memory Allocation Memory Area Distribution in the SPC35FFH Segment Processor Parameters Latches/Register Significance Write Access OCH 0DH0EH 0FH Organizational Parameters RAM 1AH 1BH1CH 1DH Mode Register Asic Interface Disstartcontrol Mode Register 1 Mode-REG1, writable STARTSPC3Exiting the Offline state EOI Status Register Fdlindst Status Register Bit15 . .readable Interrupt Controller SPC3 IRR IMR Dxout IMR IAR Watchdog Timer Automatic Baud Rate IdentificationBaud Rate Monitoring Response Time Monitoring PROFIBUS-DP Interface DPBuffer Structure Uart RAM Aux-Buffer Management Description of the DP Services SetSlaveAddress SAP55Sequence for the SetSlaveAddress Utility SetParam SAP61 Parameter Data StructureParameter Data Processing Sequence CheckConfig SAP62 SPC3 Diagnostics Processing Sequence SlaveDiagnosis SAP60SPC3 Structure of the Diagnostics Buffer WriteReadData / DataExchange DefaultSAPWriting Outputs Reading Inputs UserWatchdogTimer GlobalControl SAP58 GetConfig SAP59 ReadInputs SAP56ReadOutputs SAP57 Hardware Interface Universal Processor Bus InterfaceGeneral Description Bus Interface Unit BIU XINT/MO Mode Bus Interface V1.3 Switching Diagram Principles Low Cost System with 80C32 System X86-Mode SPC3 Application with the 80 C Application with th 80 C Interface Signals UartAsic Test Technical Data Maximum Limit ValuesPermitted Operating Values DC-Specifikation of the I/O- Drivers AC-Specification for the Output Drivers Tabel 8.3 DC-Specifikation of the I/O- DriversCurrent Tabelle 8.5 Leakage current of the output drivers Timing Characteristics SYS Bus InterfaceClock pulse 48 Mhz Clock Pulse Timing Reset Timing in the Synchronous C32-ModeST-Vers Min Max Unit TBD Synchronous Intel-Mode, Processor-Read-Timing Synchronous Intel-Mode, Processor-Write-Timing Timing in the Asynchronous Intel Mode X86 Mode ST-VersParameter Min Max Asynchronous Intel-Mode, Processor-Read-Timing XRD XCS XreadyAsynchronous Intel-Mode, Processor-Write-Timing XWR XCS 4.1 74.2 Synchronous Motorola-Mode, Processor-Read-Timing Synchronous Motorola-Mode, Processor-Write-Timing Timing in the Asynchronous Motorola-Mode for example, 68HC16 Asynchronous Motorola-Mode, Processor-Read-Timing XCS XdsackAsynchronous Motorola-Mode, Processor-Write-Timing Serial Bus Interface Pulse 48 MHz Housing PQFP-44 Housing SPC3 Hardware Description Symbol Min Typ Max AMI-Vers 13.6513.90 14.15 Profibus Interface Pin AssignmentRTS TXD Example for the RS 485 Interface SN65ALS1176 Appendix AddressesProfibus User Organisation Technical contact person at ComDeC in Germany General Definition of Terms Ordering of ASICs10.3.1 SPC3 AMI 10.3.2 SPC3 ST Appendix a Diagnostics Processing in Profibus DP Diagnostics Bits and Expanded DiagnosticsIntroduction Statdiag Identifier Byte 7 has Etc Identifier Byte 0 has Diagnostics Processing from the System View Single DiagnosticsSimatic S5 / COM ET Combi Appendix B Useful Information Data format in the Siemens PLC SimaticPage Siemens Aktiengesellschaft

Siemens SPC3 Timing Characteristics, SYS Bus Interface, Clock pulse 48 Mhz, Clock Pulse Timing

Models: SPC3

PROFIBUS Interface Center

SPC3