To change a controllerÕs mode | Omega Engineering #M3350/0101

7.Changing Controller Mode and Using Autotune

7.1Introduction

The CN8-SW system provides operators with an easy, reliable way of changing a controllerÕs mode without using the unitÕs front panel. This ability to change mode includes placing the controller in Autotune. Before putting a controller in Autotune, be sure to read the manual supplied with the controller. Autotune will not work correctly unless you prepare the process and the controller as described in the controller manuals.

7.2Procedure

To change a controllerÕs mode:

1.While logged in as MULTI (or another operator with View/Change Parameters privileges), select the controller by clicking on its image in the main graphic display. The border of the controller will be highlighted.

2.Select Controller Standby (or Manual or Tune). (If you attempt to put the controller into Autotune mode, a confirmation message will be displayed. Before using Autotune, you should read the manual supplied with the controller and comply with the Autotune guidelines provided in that manual. After you acknowledge the confirmation message, the Autotune command will be sent to the controller.)

3.The image of the controller on the main display will match the controllerÕs display in the new mode. For example, in Standby mode the PV value will alternate with the message ÒStbYÓ as shown in the following picture (see the ÒZone 4Ó controller).

7-1

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Omega Engineering #M3350/0101 manual Changing Controller Mode and Using Autotune, To change a controllerÕs mode

Contents

CN8-SW Table of Contents Configuring and Running Ramp and Soak Recipes Changing Controller Mode and Using AutotuneViewing and Changing Controller Configuration Parameters CN8-SWUserÕs Guide Table of Contents 11-1 CN8-SWUserÕs Guide Features Transforms a PC into an Operator Station Graphical Interface Logging Storing and Loading Configuration Parameter SetsAutomated Ramp and Soak Cycles Introduction 1 CN8-SW Computer Local AlarmsHardware and Software Requirements Controllers Overview of Setup Tasks Step Task Section This Manual CN8-SWUserÕs Guide Step Task Section in this Manual File Menu Overview of CN8-SW MenusAvailability of Functions Function Purpose Section Edit Menu View MenuController Menu Alarms Options Menu Ramp/Soak MenuHelp Menu General Instructions for Using CN8-SW Windows Menu Convention Used in This Manual CN8-SWUserÕs Guide Wiring the Network and Connecting the Computer Introduction Connecting Controllers and the Computer to the Network Introduction2 RS-232 Interface Wiring the Network and Connecting the Computer 3 RS-485 Network CN8-SWUserÕs Guide Installing the Software and Logging Installing the SoftwareTo install the software CN8-SWUserÕs Guide Installing the Software and Logging Starting the Software Logging In to CN8-SW Using the Default Account To log Changing the Password for the Default Account To change the password Setting Up Operator Accounts Permissions AvailableTo see the permissions available to a user account Procedure To add an operator login account Editing an Operator Account Deleting an Operator AccountLogging Out of the CN8-SW Application Establishing Communication with Controllers Communication Parameters Network Addresses Establishing Communication with Controllers Configuring Communication Parameters for CN8-SW System To configure the CN8-SW communication settings Establishing Communication with Controllers Automatically Using the Find Controllers Option Recognizing Controllers with the CN8-SW Software To use the automatic function If any controllers were not recognized Page Manually Using the Controller Menu To add a controller manually Deleting a Controller To delete a controller Changing Baud Rate after Communication Has Been Established Establishing Communication with Controllers Closing an .MCS File Naming ControllersSaving the .MCS File Creating a New .MCS File Opening an Existing .MCS File CN8-SWUserÕs Guide Configuring Local Alarms Procedure CN8-SWUserÕs Guide Viewing Process Values and Changing Setpoint Viewing PV and SP in the Main Window Viewing PV and SP in a Graph To view the real-time trend graph Changing the Setpoint Using the Setpoint Dialog Box To change a controllerÕs setpointSetpoint Configuring and Invoking the Single-Step Ramp Function CN8-SWUserÕs Guide To invoke the single step ramp function Changing Controller Mode and Using Autotune To change a controllerÕs mode CN8-SWUserÕs Guide Using Configuration Parameter Displays Viewing and Changing Controller Configuration ParametersAccessing Configuration Parameter Displays To access the parameter displays CN8-SWUserÕs Guide Configuring and Running Ramp and Soak Recipes Configuring CN8-SW Recipes Creating a New Recipe Configuring and Running Ramp and Soak Recipes Editing an Existing Recipe Running CN8-SW Recipes Starting to Run a RecipeTo run a CN8-SW Ramp/Soak recipe Holding Pausing Recipe Execution To hold execution of a CN8-SW recipe Resuming Recipe Execution To resume execution of a ÒheldÓ recipe Stopping Recipe Execution To stop execution of a CN8-SW recipe Configuring Controller Ramp and Soak Parameters CN8-SWUserÕs Guide Configuring and Running Ramp and Soak Recipes Running Controller Ramp and Soak Cycles Storing and Loading Controller Configurations Storing Configuration Storing and Loading Controller Configurations Loading Configuration Storing and Loading Controller Configurations 10-6 Turning On the Logging Function To turn on the logging function Viewing and Printing Log Files Turning Off the Logging FunctionTo turn off the logging function Index 12-2