Siemens 505-2557 installation and operation guide Output Data Registers, Averaging

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Output Registers The SIMATIC 505±2557 module also utilizes 32 WY registers. These registers are used to transfer the scaling values, the alarm setpoints, the filtering time constants, and the averaging count values to each of the sixteen channels.

After the data is loaded into the module, these registers then enable each of the functions on a channel-by-channel basis. These WY registers become control words for enabling each channel for special operations (Table 3-4).

Table 3-4 Output Data Registers

		WY65	Channel 1	Low alarm setpoint
		.
		.
	Alarms	WY80	Channel 16	Low alarm setpoint
	Alarms	WY81	Channel 1	High alarm setpoint
		WY81	Channel 1	High alarm setpoint
		.
		.
		WY96	Channel 16	High alarm setpoint

		WY65	Channel 1	Scaling low setpoint
		.
		.	Channel 16
	Scaling	WY80	Channel 16	Scaling low setpoint
	Scaling	WY81	Channel 1	Scaling high setpoint
		WY81	Channel 1	Scaling high setpoint
		.
		.	Channel 16
		WY96	Channel 16	Scaling high setpoint

		WY65	Channel 1	Settling time
	Digital Filtering	.
	Digital Filtering	.
		.	Channel 16	Settling time
		WY80	Channel 16	Settling time

		WY81	Channel 1	Average sample counts
	Averaging	.
	Averaging	.
		.
		WY96	Channel 16	Average sample counts

SIMATIC 505±2557 Installation and Operation Guide

Advanced Function Programming

3-7

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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 European Agency ApprovalsCommunity CE Approval100 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 ConversionEffect SignalsOut-of-Range Input Effect of Voltage Input 10 Ohm Copper Input Resolution ResolutionCalculating the I/O Base Power Budget Installing and Configuring the ModuleSelecting 2 and 3 Wire or 4 Wire Operation Installing and Configuring the Module Configuring Selecting Temperature orMillivolt Input Celsius or Selecting DegreesFahrenheit Selecting DataConfiguration Jumper Locations Module Into InsertingBase 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 Introduction Advanced Software FunctionsOverview AdvancedConfiguration Setting the ModuleJumper Controller I/O Logging Memory Input and Output Register Offsets Internal Register StructuresInput Registers Input Channel DataPeak/Valley Hold Input Words Input Flag BitsAveraging Output Data RegistersControl Registers Function Enable BitsInputs 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 Overhead for Functions Enabled When UsingTiming Considerations Timing ConstraintsDefault Function Values Default ValuesDefault Function Values for Simatic 505±2557 Additional Information about Each FunctionDegrees Alarm SetpointsCentigrade or Degrees FahrenheitDigital Filtering Peak and Valley AveragingHold 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