Siemens 505-2557 Description, 100 Ohm, 10 Ohm, 120 Ohm RTDs, or Millivolt Inputs

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		Chapter 1
		Description

1.1	Operating Modes	. . . . . . . . . . . . . . . . . . . . 1-2
	Asynchronous Operation	. . . . . . . . . . . . . . . . . . . . 1-2
	Compatability with Immediate I/O	. . . . . . . . . . . . . . . . . . . . 1-2
	100 Ohm, 10 Ohm, 120 Ohm RTDs, or Millivolt Inputs	. . . . . . . . . . . . . . . . . . . . 1-2
	Digital Word Map	. . . . . . . . . . . . . . . . . . . . 1-3
1.2	RTD Input to Digital Conversion	. . . . . . . . . . . . . . . . . . . . 1-4
	Engineering Units	. . . . . . . . . . . . . . . . . . . . 1-4
	Scale Units	. . . . . . . . . . . . . . . . . . . . 1-4
	Effect of Out-of-Range Input Signals	. . . . . . . . . . . . . . . . . . . . 1-5
	Resolution	. . . . . . . . . . . . . . . . . . . . 1-7

SIMATIC 505±2557 Installation and Operation Guide

Description

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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 Approval Agency ApprovalsEuropean Community CE100 Ohm, 10 Ohm, 120 Ohm RTDs, or Millivolt Inputs DescriptionOperating Modes Word Input to the PLC from the Module Scale Units RTD Input to Digital ConversionOut-of-Range Input SignalsEffect Effect of Voltage Input 10 Ohm Copper Input Resolution ResolutionSelecting 2 and 3 Wire or 4 Wire Operation Installing and Configuring the ModuleCalculating the I/O Base Power Budget Installing and Configuring the Module Configuring Millivolt Input Temperature orSelecting Selecting Data Selecting DegreesCelsius or FahrenheitConfiguration Jumper Locations Base InsertingModule Into Copper Wire Table at 25 Degrees Celsius Wiring the Input ConnectorsPress 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 Advanced Advanced Software FunctionsIntroduction OverviewJumper Setting the ModuleConfiguration Memory LoggingController I/O Input Channel Data Internal Register StructuresInput and Output Register Offsets Input RegistersPeak/Valley Hold Input Words Input Flag BitsAveraging Output Data RegistersInputs Function Enable BitsControl Registers Discrete Handshake Inputs Data Identification Bits OutputsData Loading Process Loading Data into the Simatic 505±2557 ModuleSample 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 Constraints When UsingTiming Overhead for Functions Enabled Timing ConsiderationsAdditional Information about Each Function Default ValuesDefault Function Values Default Function Values for Simatic 505±2557Degrees Fahrenheit Alarm SetpointsDegrees Centigrade orDigital Filtering Hold AveragingPeak and Valley Flag Bits Hold ResetPrecedence FunctionTroubleshooting Symptom Probable Cause Corrective Action 10 Troubleshooting Flow Diagram17 I/O Register Quick Reference I/O Register Quick ReferenceOr K Memory Configuration Tables Page Addressing Worksheet 18 Open RTD Status Bits Items Unique to the Simatic 505±2557 ModuleTroubleshooting Table B-1 Specifications SpecificationsSpecifications subject to change without notice Jumper Settings Log Sheet Customer Response Business Reply Mail