Siemens 505-2557 installation and operation guide Enabling the Functions Loaded

Page 44

Internal Register Structures (continued)

5.The functions are enabled with the enable bits. WY65 and WY66 are set to all 1's with a MOVW instruction (see Figure 3-11).

					MOVW
					A V301


X16			C2		B WY65	V301=65,535	C3
					B WY65
					N=2
						V302=65,535

Figure 3-11 Enabling the Functions Loaded

6.With the Data_Ready bit, data is transferred with Y32 (see Figure 3-12).

	MWIR
	A	V303
C3	B	Y17	V303=1	Y32
	N=3

Data_Ready

Figure 3-12 Loading the Enable Bits

3-14 Advanced Function Programming

SIMATIC 505±2557 Installation and Operation Guide

Image 44

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 Agency Approvals EuropeanCommunity CE 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 UnitsOut-of-Range Input SignalsEffect Effect of Voltage Input 10 Ohm Copper Resolution Input 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 Degrees Celsius orFahrenheit Selecting DataConfiguration Jumper Locations Base InsertingModule Into 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 Advanced Software Functions IntroductionOverview AdvancedJumper Setting the ModuleConfiguration Memory LoggingController I/O Internal Register Structures Input and Output Register OffsetsInput Registers Input Channel DataInput Flag Bits Peak/Valley Hold Input WordsOutput Data Registers AveragingInputs Function Enable BitsControl Registers Discrete Handshake Inputs Outputs Data Identification Bits Loading 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 When Using Timing Overhead for Functions EnabledTiming Considerations Timing ConstraintsDefault Values Default Function ValuesDefault Function Values for Simatic 505±2557 Additional Information about Each FunctionAlarm Setpoints DegreesCentigrade or Degrees FahrenheitDigital Filtering Hold AveragingPeak and Valley 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