Siemens SPC3 manual Uart, Asic Test, Interface Signals

Page 45

 

 

SPC3

PROFIBUS Interface Center

 

 

 

 

 

 

7.1.6 Interface Signals

The data bus outputs are high-resistance during the reset phase. All outputs are switched to high-resistance in the test mode. (See block test.)

Name

Input/ Output

Type

Comments

DB(7..0)

 

I/O

Tristate

High-resistance for RESET

AB(10..0)

 

I

 

AB(10) has a pull down resistor.

MODE

 

I

 

Setting: syn/async interface

XWR/E_CLOCK

 

I

 

Intel: Write /Motorola: E-Clk

XRD/R_W

 

I

 

Intel: Read /Motorola: Read/Write

XCS

 

I

 

Chip Select

ALE/AS

 

I

 

Intel/Motorola: Address Latch Enable

DIVIDER

 

I

 

Scaling factor 2/4 for CLKOUT 2/4

X/INT

 

O

Tristate

Polarity programmable

XRDY/XDTACK

 

O

Tristate

Intel/Motorola: Ready-Signal

CLK

 

I

 

48 MHz

XINT/MOT

 

I

 

Setting: Intel/Motorola

CLKOUT2/4

 

O

Tristate

24/12 MHz

RESET

 

I

Schmitt-Trigger

Minimum of 4 clock pulse cycles

Figure 7.2: Microprocessor Bus Signals

7.2 UART

The transmitter converts the parallel data structure into a serial data flow. Request-to-Send (RTS) is generated before the first character. The XCTS input is available for connecting a modem. After RTS active, the transmitter must hold back the first telegram character until the XCTS modem activates.

The receiver converts the serial data flow into the parallel data structure. The receiver scans the serial data flow with the four-fold transmission speed. Stop bit testing can be switched off for test purposes („DIS_STOP_CONTROL = 1“, in mode register 0 or ‘SetParam-Telegram’ for DP). One requirement of the PROFIBUS protocol is that no rest states are permitted between the telegram characters. The SPC3 transmitter ensures that this specification is maintained. This following start bit test is switched off with the parameter setting „DIS_START_CONTROL = 1“ (in moderegister 0 or ‘Set_Param telegram’ for DP).

Specified by the four-fold scan, a maximum distortion of the serial input signal of X = -47% to y = +22% is permissible.

7.3 ASIC Test

All output pins and I/O pins can be switched in the high-resistance state via the XTESTO test pin. An additional XTEST1 input is provided (more information upon request) to test the block internally with test automatic devices (not in the target hardware environment!).

Pin No.

Name

Function

 

34

XTEST0

VSS (GND)

All outputs high-resistance

 

 

VDD (+5V)

Normal SPC3 function

35

XTEST1

VSS (GND)

Various test modes

 

 

VDD (+5V)

Normal SPC3 function

Figure 7.3: Test Support

XTEST0 and XTEST1 must be placed on VDD (+5V) via external pull-up resistors.

SPC3 Hardware Description

V1.3

Page 43

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 Directory11.3 Diagnostics Processing from the System View Asic TestPin Assignment Example for the RS 485 Interface SPC3 Introduction Function Overview Cmos Pin DescriptionCPD 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 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 RAMDescription of the DP Services SetSlaveAddress SAP55Sequence for the SetSlaveAddress Utility SetParam SAP61 Parameter Data StructureParameter Data Processing Sequence SPC3 CheckConfig SAP62Diagnostics Processing Sequence SlaveDiagnosis SAP60SPC3 Structure of the Diagnostics Buffer WriteReadData / DataExchange DefaultSAPWriting Outputs Reading Inputs GlobalControl SAP58 UserWatchdogTimerGetConfig SAP59 ReadInputs SAP56ReadOutputs 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 Interface Signals UartAsic Test Maximum Limit Values Technical DataPermitted Operating Values DC-Specifikation of the I/O- DriversAC-Specification for the Output Drivers Tabel 8.3 DC-Specifikation of the I/O- 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-TimingTiming in the Asynchronous Intel Mode X86 Mode ST-VersParameter 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-TimingAsynchronous Motorola-Mode, Processor-Read-Timing XCS XdsackAsynchronous 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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