Siemens 505-2557 installation and operation guide Iv Contents

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3.2	Internal Register Structures	3-5
	Description of the I/O Registers	3-5
	Input Registers	3-5
	Output Registers	3-7
	Control Registers	3-8
	Inputs	3-8
	Outputs	3-10
	Loading Data into the SIMATIC 505±2557 Module	3-11
3.3	Loading Programs into the I/O Module	3-15
3.4	Timing Considerations	3-18
	Timing Constraints When Using Advanced Functions	3-18
3.5	Additional Information about Each Function	3-19
	Default Values	3-19
	Degrees Centigrade or Degrees Fahrenheit	3-20
	Scaling	3-20
	Alarm Setpoints	3-20
	Digital Filtering	3-21
	Averaging	3-22
	Peak and Valley Hold	3-22
	Peak and Valley Hold Reset	3-23
	Flag Bits	3-23
	Advanced Function Precedence	3-24
3.6	Troubleshooting	3-25
	Troubleshooting the System	3-25
3.7	I/O Register Quick Reference	3-27
3.8	V or K Memory Configuration Tables	3-28
3.9	Addressing Worksheet	3-30
3.10	Items Unique to the SIMATIC 505±2557 Module	3-31

Appendix A Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1

Appendix B Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1

Appendix C Jumper Settings Log Sheet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-1

ivContents

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Contents Simatic Copyright 1998 by Siemens Energy & Automation, Inc Manual Publication History List of Effective Pages Contents Iv Contents List of Figures List of Tables Preface Community CE Agency ApprovalsEuropean ApprovalDescription 100 Ohm, 10 Ohm, 120 Ohm RTDs, or Millivolt InputsOperating Modes Word Input to the PLC from the Module RTD Input to Digital Conversion Scale UnitsSignals EffectOut-of-Range Input Effect of Voltage Input 10 Ohm Copper Resolution Input ResolutionInstalling and Configuring the Module Calculating the I/O Base Power BudgetSelecting 2 and 3 Wire or 4 Wire Operation Installing and Configuring the Module Configuring Temperature or SelectingMillivolt Input Fahrenheit Selecting DegreesCelsius or Selecting DataConfiguration Jumper Locations Inserting Module IntoBase Wiring the Input Connectors Copper Wire Table at 25 Degrees CelsiusPress In Wiring Connector Wiring Diagram for 2, 3, or 4 Wire RTD Wiring Diagram for Millivolt Measurements Cable Grounding Example I/O Configuration Chart Advanced Function Programming Overview Advanced Software FunctionsIntroduction AdvancedSetting the Module ConfigurationJumper Logging Controller I/OMemory Input Registers Internal Register StructuresInput and Output Register Offsets Input Channel DataInput Flag Bits Peak/Valley Hold Input WordsOutput Data Registers AveragingFunction Enable Bits Control RegistersInputs Discrete Handshake Inputs Outputs Data Identification BitsLoading Data into the Simatic 505±2557 Module Data Loading ProcessSample Low and High Alarm Setpoints Identifying the Data Being Transferred 11 Enabling the Functions Loaded Loading Programs into the I/O Module 13 Startup Relay Ladder Logic Page Timing Considerations When UsingTiming Overhead for Functions Enabled Timing ConstraintsDefault Function Values for Simatic 505±2557 Default ValuesDefault Function Values Additional Information about Each FunctionCentigrade or Alarm SetpointsDegrees Degrees FahrenheitDigital Filtering Averaging Peak and ValleyHold Hold Reset Flag BitsFunction PrecedenceTroubleshooting 10 Troubleshooting Flow Diagram Symptom Probable Cause Corrective ActionI/O Register Quick Reference 17 I/O Register Quick ReferenceOr K Memory Configuration Tables Page Addressing Worksheet Items Unique to the Simatic 505±2557 Module 18 Open RTD Status BitsTroubleshooting Specifications Table B-1 SpecificationsSpecifications subject to change without notice Jumper Settings Log Sheet Customer Response Business Reply Mail