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Siemens SPC3 manual Serial Bus Interface, Pulse 48 MHz

Models: SPC3

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PROFIBUS Interface Center	SPC3

8.5.6	Serial Bus Interface

No.	Parameter	MIN	MAX	Unit


	Pulse 48 MHz:
1	RTS − to TxD Setup Time	4T
2	RTS ↓ to TxD Hold Token	4T
T =	Clock pulse cycle (48MHz)

RTS

1

TxD

2

Page 54	V1.3	SPC3 Hardware Description
2003/04		Copyright (C) Siemens AG 2003. All rights reserved.

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Siemens SPC3 manual Serial Bus Interface, Pulse 48 MHz

Contents

Simatic NET Page SIM Atic NET Profibus Interface Center SPC3 Hardware DescriptionVersions Release Date ChangesMode Register Status Register Interrupt Controller Watchdog TimerDPBuffer Structure Description of the DP Services DirectoryPin Assignment Example for the RS 485 Interface 11.3 Diagnostics Processing from the System ViewAsic Test SPC3 Introduction Function Overview Pin Description CmosCPD Cmos with pull down TTLt Schmitt trigger V1.3 5FFH Memory AllocationMemory Area Distribution in the SPC3 Segment Processor Parameters Latches/Register 0EH 0FH Significance Write AccessOCH 0DH Organizational Parameters RAM 1AH 1BH1CH 1DHMode Register Asic InterfaceDisstartcontrol Mode Register 1 Mode-REG1, writable STARTSPC3Exiting the Offline state EOIStatus Register Fdlindst Status Register Bit15 . .readableInterrupt Controller SPC3 IRR IMRDxout IMR IARWatchdog Timer Automatic Baud Rate IdentificationBaud Rate Monitoring Response Time MonitoringPROFIBUS-DP Interface DPBuffer StructureUart RAM Aux-Buffer ManagementSequence for the SetSlaveAddress Utility Description of the DP ServicesSetSlaveAddress SAP55 Parameter Data Processing Sequence SetParam SAP61Parameter Data Structure CheckConfig SAP62 SPC3SPC3 Diagnostics Processing SequenceSlaveDiagnosis SAP60 Writing Outputs Structure of the Diagnostics BufferWriteReadData / DataExchange DefaultSAP Profibus Interface Center Reading InputsUserWatchdogTimer GlobalControl SAP58ReadOutputs SAP57 GetConfig SAP59ReadInputs SAP56 Hardware Interface Universal Processor Bus InterfaceGeneral Description 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 Asic Test Interface SignalsUart Technical Data Maximum Limit ValuesPermitted Operating Values DC-Specifikation of the I/O- DriversCurrent Tabelle 8.5 Leakage current of the output drivers AC-Specification for the Output DriversTabel 8.3 DC-Specifikation of the I/O- Drivers Timing Characteristics SYS Bus InterfaceClock pulse 48 Mhz Clock Pulse TimingReset Timing in the Synchronous C32-ModeST-Vers Min Max Unit TBDSynchronous Intel-Mode, Processor-Read-Timing Synchronous Intel-Mode, Processor-Write-TimingParameter Min Max Timing in the Asynchronous Intel Mode X86 ModeST-Vers Asynchronous Intel-Mode, Processor-Read-Timing XRD XCS XreadyAsynchronous Intel-Mode, Processor-Write-Timing XWR XCS4.1 74.2 Synchronous Motorola-Mode, Processor-Read-TimingSynchronous Motorola-Mode, Processor-Write-Timing Timing in the Asynchronous Motorola-Mode for example, 68HC16Asynchronous Motorola-Mode, Processor-Write-Timing Asynchronous Motorola-Mode, Processor-Read-TimingXCS Xdsack Serial Bus Interface Pulse 48 MHzHousing PQFP-44 Housing SPC3 Hardware Description Symbol Min Typ Max AMI-Vers 13.6513.90 14.15Profibus Interface Pin AssignmentRTS TXDExample for the RS 485 Interface SN65ALS1176Appendix AddressesProfibus User Organisation Technical contact person at ComDeC in GermanyGeneral Definition of Terms Ordering of ASICs10.3.1 SPC3 AMI 10.3.2 SPC3 STAppendix a Diagnostics Processing in Profibus DP Diagnostics Bits and Expanded DiagnosticsIntroduction StatdiagIdentifier Byte 7 has Etc Identifier Byte 0 has Diagnostics Processing from the System View Single DiagnosticsSimatic S5 / COM ET CombiAppendix B Useful Information Data format in the Siemens PLC SimaticPage Siemens Aktiengesellschaft