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Omega Engineering #M3350/0101 2.2 Connecting Controllers and the Computer to the Network

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CN8-SWÔ UserÕs Guide

2-2

2.2 Connecting Controllers and the Computer to the Network

2.2.1 Introduction

The manual supplied with each controller identifies the terminals to be used for RS-232

or RS-485 communications. Consult those manuals before attempting to connect the

controllers to the network.

2.2.2 RS-232 Interface

Follow the instructions in the controller manual for making an RS-232 connection to the

instrument. Refer to the diagram below to see how an adapter should route signals to

and from the computerÕs serial port.

RS-232 Communication:

One-to-one connection between the controller and an RS-232 port

13 14

11 12

TxRx

Computer

DB25 DB9

2 TX 3

3 RX 2

7 GND 5

Use a DB25 male or DB9 female

connector.

Gnd

Less than 50 ft.

Contents

Main Table of Contents 2. Wiring the Network and Connecting the Computer.................................2-1 3. Installing the Software and Logging In...................................................3-1 4. Establishing Communication with Controllers........................................4-1 6. Viewing Process Values and Changing Setpoint ...................................6-1 10. Storing and Loading Controller Configurations.................................10-1 7. Changing Controller Mode and Using Autotune......................................7-1 8. Viewing and Changing Controller Configuration Parameters.................8-1 9. Configuring and Running Ramp and Soak Recipes................................9-1 Page Page 1. Introduction 1.1 Features 1.1.1 Transforms a PC into an Operator Station 1.1.2 Graphical Interface 1.1.3 Automated Ramp and Soak Cycles 1.1.4 Logging 1.1.5 Storing and Loading Configuration Parameter Sets 1.1.6 Local Alarms 1.2 Hardware and Software Requirements 1.2.1 CN8-SW Computer 1.2.2 Controllers 1-5 1.3 Overview of Setup Tasks Page 1-7 1.4 Overview of CN8-SW Menus 1.4.1 Availability of Functions F i l e M e n u F u n c t i o n P u r p o s e S e c t i o n E d i t M e n u F u n c t i o n P u r p o s e S e c t i o n V i e w M e n u F u n c t i o n P u r p o s e S e c t i o n C o n t r o l l e r M e n u C o n t r o l l e r M e n u F u n c t i o n P u r p o s e S e c t i o n 1-10 O p t i o n s M e n u F u n c t i o n P u r p o s e S e c t i o n R a m p / S o a k M e n u F u n c t i o n P u r p o s e S e c t i o n H e l p M e n u 1.5 General Instructions for Using CN8-SW Windows Page 2. Wiring the Network and Connecting the Computer 2.1 Introduction 2.2 Connecting Controllers and the Computer to the Network 2.2.1 Introduction 2.2.2 RS-232 Interface RS-232 Communication: One-to-one connection between the controller and an RS-232 port Wiring the Network and Connecting the Computer 2.2.3 RS-485 Network (B) (B) (A) Page 3. Installing the Software and Logging In 3.1 Installing the Software Page Page 3.3 Logging In to CN8-SW Using the Default Account 3.4 Changing the Password for the Default Account 3.5 Setting Up Operator Accounts 3.5.1 Permissions Available 3.5.2 Procedure 3.6 Editing an Operator Account 3.7 Deleting an Operator Account 3.8 Logging Out of the CN8-SW Application 4. Establishing Communication with Controllers 4.1 Introduction 4.2 Configuring Communication Parameters and Assigning Network Addresses in Controllers 4.2.1 Communication Parameters 4.2.2 Network Addresses 4.3 Configuring Communication Parameters for CN8-SW System Page 4.4 Recognizing Controllers with the CN8-SW Software 4.4.1 Introduction 4.4.2 Automatically Using the Find Controllers Option Page Page Page 4.4.3 Manually Using the Controller Menu 4.5 Deleting a Controller 4.6 Changing Baud Rate after Communication Has Been Established Page 4.7 Naming Controllers 4.8 Saving the .MCS File 4.9 Closing an .MCS File 4.10 Creating a New .MCS File Page Page 5. Configuring Local Alarms 5.1 Introduction 5.2 Procedure Page Page Page 6.3 Viewing PV and SP in a Graph 6.4 Changing the Setpoint Using the Setpoint Dialog Box 6.5 Configuring and Invoking the Single-Step Ramp Function Page 7. Changing Controller Mode and Using Autotune 7.1 Introduction 7.2 Procedure Page 8. Viewing and Changing Controller Configuration Parameters 8.1 Introduction 8.2 Accessing Configuration Parameter Displays 8.3 Using Configuration Parameter Displays Page Page 9.2 Configuring CN8-SW Recipes 9.2.1 Creating a New Recipe Page 9.2.2 Editing an Existing Recipe 9.3 Running CN8-SW Recipes 9.3.1 Starting to Run a Recipe 9.3.2 Holding (Pausing) Recipe Execution 9.3.3 Resuming Recipe Execution 9.3.4 Stopping Recipe Execution 9.4 Configuring Controller Ramp and Soak Parameters Page Page 9.5 Running Controller Ramp and Soak Cycles 10. Storing and Loading Controller Configurations 10.1 Introduction 10.2 Storing Configuration Page 10.3 Loading Configuration Page Page 11. Logging PV and SP Values 11.1 Introduction 11.2 Turning On the Logging Function Page 12-1 12. Index A B C D N O P R S