Omega M3350-0101 User Manual

UserÕs Guide

CN8-SW

OMEGA #M3350/0101

Table of Contents

1. Introduction...............................................................................................1-1

1.1 Features..................................................................................................................1-1

1.1.1 Transforms a PC into an Operator Station ....................................................1-1

1.1.2 Graphical Interface.......................................................................................... 1-2

1.1.3 Automated Ramp and Soak Cycles ............................................................... 1-3

1.1.4 Logging............................................................................................................1-3

1.1.5 Storing and Loading Configuration Parameter Sets......................................1-3

1.1.6 Local Alarms....................................................................................................1-4

1.2 Hardware and Software Requirements .................................................................1-4

1.2.1 CN8-SW Computer ......................................................................................... 1-4

1.2.2 Controllers ....................................................................................................... 1-4

1.3 Overview of Setup Tasks .......................................................................................1-5

1.4 Overview of CN8-SW Menus.................................................................................1-7

1.4.1 Availability of Functions ..................................................................................1-7

1.4.2 Menu Convention Used in This Manual.......................................................1-11

1.5 General Instructions for Using CN8-SW Windows .............................................1-11

2. Wiring the Network and Connecting the Computer.................................2-1

2.1 Introduction ............................................................................................................. 2-1

2.2 Connecting Controllers and the Computer to the Network................................... 2-2

2.2.1 Introduction...................................................................................................... 2-2

2.2.2 RS-232 Interface............................................................................................. 2-2

2.2.3 RS-485 Network.............................................................................................. 2-3

3. Installing the Software and Logging In ...................................................3-1

3.1 Installing the Software............................................................................................3-1

3.2 Starting the Software.............................................................................................. 3-3

3.3 Logging In to CN8-SW Using the Default Account ...............................................3-4

3.4 Changing the Password for the Default Account .................................................. 3-5

3.5 Setting Up Operator Accounts ............................................................................... 3-6

3.5.1 Permissions Available..................................................................................... 3-6

3.5.2 Procedure........................................................................................................ 3-7

3.6 Editing an Operator Account.................................................................................. 3-8

3.7 Deleting an Operator Account ...............................................................................3-8

3.8 Logging Out of the CN8-SW Application...............................................................3-8

4. Establishing Communication with Controllers........................................4-1

4.1 Introduction ............................................................................................................. 4-1

4.2 Configuring Communication Parameters and Assigning Network Addresses in

Controllers .......................................................................................................................... 4-2

900M048U00 REVISION ÒBÓ Ó Omega Engineering i

CN8-SWÔ UserÕs Guide

4.2.1 Communication Parameters...........................................................................4-2

4.2.2 Network Addresses.........................................................................................4-3

4.3 Configuring Communication Parameters for CN8-SW System............................ 4-4

4.4 Recognizing Controllers with the CN8-SW Software............................................4-6

4.4.1 Introduction...................................................................................................... 4-6

4.4.2 Automatically Using the Find Controllers Option........................................... 4-6

4.4.3 Manually Using the Controller Menu............................................................4-10

4.5 Deleting a Controller.............................................................................................4-11

4.6 Changing Baud Rate after Communication Has Been Established................... 4-12

4.7 Naming Controllers...............................................................................................4-14

4.8 Saving the .MCS File............................................................................................4-14

4.9 Closing an .MCS File............................................................................................4-14

4.10 Creating a New .MCS File ...................................................................................4-14

4.11 Opening an Existing .MCS File............................................................................4-15

5. Configuring Local Alarms.........................................................................5-1

5.1 Introduction ............................................................................................................. 5-1

5.2 Procedure ...............................................................................................................5-1

6. Viewing Process Values and Changing Setpoint ...................................6-1

6.1 Introduction ............................................................................................................. 6-1

6.2 Viewing PV and SP in the Main Window............................................................... 6-2

6.3 Viewing PV and SP in a Graph..............................................................................6-3

6.4 Changing the Setpoint Using the Setpoint Dialog Box ......................................... 6-4

6.5 Configuring and Invoking the Single-Step Ramp Function ..................................6-5

7. Changing Controller Mode and Using Autotune......................................7-1

7.1 Introduction ............................................................................................................. 7-1

7.2 Procedure ...............................................................................................................7-1

8. Viewing and Changing Controller Configuration Parameters.................8-1

8.1 Introduction ............................................................................................................. 8-1

8.2 Accessing Configuration Parameter Displays.....................................................8-12

8.3 Using Configuration Parameter Displays .............................................................. 8-3

9. Configuring and Running Ramp and Soak Recipes ................................9-1

9.1 Introduction ............................................................................................................. 9-1

9.2 Configuring CN8-SW Recipes ............................................................................... 9-2

9.2.1 Creating a New Recipe...................................................................................9-2

9.2.2 Editing an Existing Recipe..............................................................................9-4

9.3 Running CN8-SW Recipes ....................................................................................9-5

9.3.1 Starting to Run a Recipe ................................................................................9-5

9.3.2 Holding (Pausing) Recipe Execution .............................................................9-6

9.3.3 Resuming Recipe Execution .......................................................................... 9-7

9.3.4 Stopping Recipe Execution ............................................................................9-8

9.4 Configuring Controller Ramp and Soak Parameters ............................................ 9-9

9.5 Running Controller Ramp and Soak Cycles .......................................................9-12

10. Storing and Loading Controller Configurations.................................10-1

ii Ó Omega Engineering 900M048U00 REVISION ÒBÓ

Table of Contents

10.1 Introduction ........................................................................................................... 10-1

10.2 Storing Configuration............................................................................................10-2

10.3 Loading Configuration .......................................................................................... 10-4

11. Logging PV and SP Values..................................................................11-1

11.1 Introduction ........................................................................................................... 11-1

11.2 Turning On the Logging Function ........................................................................ 11-1

11.3 Viewing and Printing Log Files ............................................................................11-2

11.4 Turning Off the Logging Function ........................................................................ 11-2

12. Index.....................................................................................................12-1

Limited Warranty................................................................. Error! Bookmark not defined.

900M048U00 REVISION ÒBÓ Ó Omega Engineering iii

CN8-SWÔ UserÕs Guide

iv Ó Omega Engineering 900M048U00 REVISION ÒBÓ

1.1 Features

1.1.1 Transforms a PC into an Operator Station

The CN8-SW software makes it easy for operators to use a personal computer to monitor networked Omega controllers. Linked to the controllers by an RS-485 network, the PC can be used to read process values, change setpoints and other parameters, change controller mode, and monitor for alarms. single controller in a lab or service department, using an RS-232 link.

The CN8-SW application can communicate with any Omega controller that supports the Omega Plus Protocol or the original Omega Protocol. All the configuration parameter values stored in non-volatile memory in a controller that supports Omega Plus Protocol can be saved to the PC for backup, and loaded to the same or different controllers.

CN8-SW is also ideal for quickly configuring a

1. Introduction

Up to 32 controllers can be included on an RS-485 network without using a network repeater device.

The CN8-SW software can address up to 254 controllers.

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CN8-SWÔ UserÕs Guide

1.1.2 Graphical Interface

The CN8-SW software uses a graphical user interface and familiar point-and-click techniques. The main CN8-SW display shows PV and SP of every controller. The CN8SW system can be set up to show all controllers on the network on a single display, or only selected controllers. Any message that can be displayed on a controllerÕs front panel will also be shown on the CN8-SW display. Operators can see at a glance if a controller is in standby or other special mode, and if the controller detects a problem such as an open sensor.

Double-clicking (left button) on any controller in the main display will call up a display of all the parameters in Omega Plus Protocol-compliant controllers, and the most important parameters in controllers that support the original Omega Protocol. A right-click on a controller displays the form used to change its setpoint. A left-click on a controller selects the controller for functions on the Controller menu. Many additional functions are accessible using the other CN8-SW menus.

A Òtext onlyÓ view is available for operators who prefer to see the controller setpoints and process variables in list form. A left-click on a controller in the list selects the controller for functions on the Controller menu.

1-2

1.1.3 Automated Ramp and Soak Cycles

Use the CN8-SW Ramp and Soak function to configure any number of recipes consisting of any number of ramp and soak steps. These recipes are stored on the CN8-SW computer. Under the direction of CN8-SW, any controller on the network can execute your choice of recipe, even models that do not support configuration and execution of ramp and soak cycles using the controller front panel.

The CN8-SW displays also provide a quick way to configure and run recipes that use the controllerÕs own recipe parameters.

1.1.4 Logging

The CN8-SW application supports optional logging of SP and PV for all controllers at configurable intervals. Logs are saved in ASCII text files with comma-separated-value format. These files can be viewed, printed, and manipulated with other applications, such as word processing and spreadsheet software.

1.1.5 Storing and Loading Configuration Parameter Sets

All the configuration parameter values stored in non-volatile memory in a controller that supports Omega Plus Protocol can be saved to the PC and loaded to the same or different controllers. Backing up a unique controller configuration on a PC is always prudent. If a controller is damaged later and must be replaced, its custom configuration can be loaded quickly to a spare controller, minimizing down time.

Introduction

In large installations where many controllers use the same (or almost the same) configuration, its easy to configure one controller using the CN8-SW display, save the parameter set to the PC, then load the same parameter set to many other controllers on the network. The time saved by eliminating the need to configure each controller at its front panel more than pays for the CN8-SW package.

The ability to store and load a controller configuration also enables you to reuse tuning parameter values that have proved to be best for certain process conditions. If the responsiveness of your process is altered at times, you may find it desirable to save sets of tuning parameters to be used under different circumstances.

For example, if you autotune the controller for optimum control of the temperature of an engraving cylinder while one size is in use, save the parameter set before installing a larger or smaller cylinder. The different size cylinder may heat at a different rate, requiring different tuning parameters to be used for optimum control. Save the new tuning as a parameter set with a different name. When the day comes that you have to reinstall the first cylinder, reload the parameter set, including the tuning parameters that were optimized for that cylinder.

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CN8-SWÔ UserÕs Guide

1.1.6 Local Alarms

If a controller that supports the Omega Plus Protocol is in alarm, the A1 or A2 indicator on the controllerÕs Òfront panelÓ on the main display will appear to be lit (red), matching the behavior of the A1 and A2 indicators on the controller faceplate. The process value on the CN8-SW graphic display will also change color from magenta (normal) to red (alarm).

As a bonus, the CN8-SW supports Òlocal alarmsÓ. These two process alarms can be configured in CN8-SW for each controller on the network, including controllers that do not provide an alarm function of their own, and controllers that support the original Omega Protocol.

If a controllerÕs PV exceeds (high alarm) or falls below (low alarm) the configured local alarm limit, the alarm indicators on the main graphic display will ÒlightÓ and the PV will change to red.

1.2 Hardware and Software Requirements

1.2.1 CN8-SW Computer

The computer used to run the CN8-SW software must meet the following requirements:

· 4 8 6 S X o r b e t t e r p r o c e s s o r

· 1 M B o f d i s k s p a c e f o r C N 8 - S W s o f t w a r e ( p l u s a d d i t i o n a l s p a c e f o r l o g f i l e s )

· W i n d o w s 9 5 o r W i n d o w s 9 8

· Available COM (serial) port or RS-485 port. Communication between the PC and an

RS-485 network can be accomplished using a COM port and an RS-232-to-RS-485 converter. Communication with a single controller using a COM port for an RS-232 link does not require a converter, but does require an adapter.

1.2.2 Controllers

Any controller that uses the Omega Plus Protocol, and has an appropriate communication option card can communicate with the CN8-SW computer.

· O n e - t o - o n e c o m m u n i c a t i o n w i t h t h e C N 8 - S W c o m p u t e r r e q u i r e s a n

R S - 2 3 2 o r R S - 4 8 5 c a r d .

· T o b e p a r t o f a m u l t i - d r o p n e t w o r k , t h e c o n t r o l l e r m u s t h a v e a n R S - 4 8 5 o p t i o n

c a r d i n s t a l l e d .

At the time of publication, the following controllers support the Omega Plus Protocol: Series CN8500 (1/16 DIN, 1/8 DIN and _ DIN). If you have a question about the protocol supported by a new model, please call your Omega sales / service representative at: 1-800-826-6342 in the U.S.A. and Canada and (95) 800-TC-OMEGA

in Mexico and Latin America.

1-4

1.3 Overview of Setup Tasks

The following tasks must be performed in this sequence to use the CN8-SW application successfully with an RS-485 network. The same basic process applies to using the CN8SW application to communicate with a single controller over an RS-232 link. In the case of RS-232 links, the ÒnetworkÓ consists of only the controller and the PC.

Introduction

S t e p T a s k

S e c t i o n i n

t h i s M a n u a l

1 Connect the controllers to the network. 2

and controller

2 Connect the personal computer to the network. 2

3 Install the CN8-SW software and log in. 3

4 Change the password on the default account ÒMULTIÓ (not required, but

strongly recommended).

5 Set up operator accounts and assign passwords. 3

6 If any of the Omega Plus controllersÕ communication parameters have been

changed from the factory defaults, use the front panel of each controller to set each controllerÕs configuration parameters to the defaults.

For controllers that support the original Omega Protocol, use each instrumentÕs front panel to set the controller to use 8 data bits, no parity, 1 stop bit. Configure each controller to match the baud rate you plan to use for the network. If you plan to use the automatic Òfind controllersÓ option described in Step 11, set the Omega Protocol controllers to 9600 baud.

8 Use the front panel of all controllers (Omega Protocol and Omega Plus

Protocol) to assign a unique address (between 1 and 254) to each controller.

Configure the CN8-SW communication parameters and port selection. (The CN8-SW communication settings will override, but not change, the operating system settings for the selected port on your PC.)

and controller

manuals

10 Use the CN8-SW software to recognize each controller on the network

automatically. In the process, the CN8-SW software will set the baud rate in all Omega Plus controllers to 9600. (By default, not all Omega controllers are set to the same baud rate.)

12 Save the .MCS (CN8-SW system) file so that the process of recognizing the

13 Set up local alarms (optional).5

At this point you are ready to configure new controllers, or to begin monitoring process variables with the CN8-SW computer.

To change setpoints, see Section 6.

To change controller mode, including use of Autotune, see Section 7.

Name the controllers (optional, but recommended). By default, each controllerÕs name will be its network address.

controllers does not have to be repeated if CN8-SW is restarted.

You had to use the controller front panel in Step 8 to set the baud rate of controllers that support the original Omega Protocol, because that protocol supports reading the baud rate, but not changing it.

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CN8-SWÔ UserÕs Guide

S t e p T a s k

To view and change controller configuration parameters, see Section 8.

To configure and run ramp/soak recipes, see Section 9.

To save and load controller configuration parameter sets, see Section 10.

To log PV and SP values, see Section 11.

S e c t i o n i n

t h i s M a n u a l

1-6

1.4 Overview of CN8-SW Menus

1.4.1 Availability of Functions

The following tables provide an overview of the functions available on the CN8-SW menus. Not all functions are available all the time. If a function is not available, its name is displayed on the CN8-SW window in gray instead of black. If a keyboard shortcut is available for a function, the shortcut appears on the menu to the right of the function name.

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

Introduction

New Start a new CN8-SW Setup (.MCS) file4. This function can also

be invoked using the

Open Open an existing CN8-SW Setup (.MCS) file. This function can

also be invoked using the

Close Close the CN8-SW Setup (.MCS) file open now. 4.9

Save Save the Mutli-Comm Setup (.MCS) file open now using the

same file name. This function can also be invoked using the

button on the toolbar.

Save As

Logout Log out of the CN8-SW application without closing the

Recent File

Exit Exit the CN8-SW application. If you have not saved the current

Save the Mutli-Comm Setup (.MCS) file open now to a file with a different name.

application.

Once you have saved your CN8-SW setup to an .MCS file, this placeholder will be replaced by the name of the most recently used .MCS file. Up to four additional file names will appear on this menu.

setup to an .MCS file, you will be prompted to save before the application is closed.

button on the toolbar.

4.10

4.11

4.8

3.8

The contents of the .MCS file determine what controllers appear on the main display. The ability to create, save, and open a variety of .MCS files enables you to create displays that do not include all the controllers on the network hosted by the PC. For example, if Operator A is only interested in Controllers 1, 2, and 9, you can create an .MCS file that would cause the CN8-SW display to show only those controllers when Operator A uses that file. Operator B could use a different .MCS file to see a different custom display, one containing only Controllers 3, 4, 6, and 9, for example.

If the CN8-SW toolbar is not visible, use the View menuÕs Toolbar item to display the toolbar.

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CN8-SWÔ UserÕs Guide

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

Operator

Password Enables operators to change their own passwords. 3.4

Allows ÒSuper UsersÓ (CN8-SW Administrators) to set up operator login accounts and specify what CN8-SW features each operator will be allowed to use.

3.5

and

3.6

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

Graphic Display images of controller front panels on main CN8-SW

display.

Text

Toolbar Turn on and turn off display of CN8-SW toolbar. --

Status Bar Turn on and turn off display of CN8-SW status bar at the

Display a list of controllers, their setpoints, and process variables on the main CN8-SW display.

bottom of the window. The right side of this status bar shows what address number is being checked when the Option menu ÒStart Find ControllersÓ function is used. During normal operation the left side of the status bar displays the name of the controller that the CN8-SW software is polling.

C o n t r o l l e r M e n u

B e f o r e y o u c a n u s e a f u n c t i o n m a r k e d w i t h a n a s t e r i s k ( * ) b e l o w , y o u m u s t s e l e c t a c o n t r o l l e r o n t h e m a i n g r a p h i c d i s p l a y ( o r t e x t v i e w ) b y u s i n g t h e l e f t b u t t o n t o c l i c k o n t h e c o n t r o l l e r Õ s i m a g e ( o r n a m e i n t e x t v i e w ) .

F u n c t i o n P u r p o s e S e c t i o n

Add *

Delete *

Delete All Sever communication with all controllers. Once this function

Select All Reserved for future use. --

Unselect All Reserved for future use. --

Configure * Access the window used to change the name or network

Establish communication with a single controller. To use this function you must know the controllerÕs network address.

Sever communication with a single controller. Once this function has been used and the .MCS file saved, the CN8SW computer will not be able to communicate with the controller until you use the Add function on this menu, or the Start Find Controllers function on the Options menu.

has been used and the .MCS file saved, the CN8-SW computer will not be able to communicate with the controllers until you use the Add function on this menu, or the Start Find Controllers function on the Options menu.

address of a controller with which the CN8-SW computer can communicate.

4.4.3

4.5

4.7

1-8

Introduction

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

Alarms* Configure the local alarms. 5.5

Graph* Display a graph showing the controllerÕs SP and PV in real-

time.

Setpoint* Access the window used to change the controllerÕs setpoint. 6.4

Parameters*

Standby* Place the controller in Standby mode. The PV for the

Manual Control*

Tune*

Start Recipe*

Access the window used to view and change the controllerÕs configuration parameters. A shortcut for accessing the parameter display is double-clicking (left button) on the controller on main graphic display.

controller in Standby will alternate with the display of ÒStbYÓ. This item will be checked on the menu when accessed after selecting a controller in Standby mode.

Place the controller in Manual mode. The PV for the controller in Manual will alternate with the display of ÒFOPÓ. This item will be checked on the menu when accessed after selecting a controller in Manual mode.

Place the controller in Autotune mode. The PV for the controller in Autotune will alternate with the display of ÒAtunÓ. This item will be checked on the menu when accessed after selecting a controller in Autotune mode. Before putting a controller in Standby mode, 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 manual.

The functionality of this item depends on the features the controller supports and how the controller is configured (for multi-step ramp, single-step ramp, or ramping disabled).

If the controller supports a multi-step ramp and soak recipe based on parameter values stored in the controller and the feature is enabled, Start Recipe is used to start running that

multi-step ramp and soak recipe.

If the controller supports use of the single-step ramp to setpoint function at times other than at startup and the feature is enabled, Start Recipe item is used to ramp the

current process variable to the current setpoint over the time period specified using the appropriate parameter.

If the controller supports use of the single-step ramp to setpoint function at times other than at startup and the feature is disabled, Start Recipe can also be used to ramp

the current process variable to the current setpoint. However, if ramping is set to ÒdisabledÓ, then a confirmation message is displayed before the PV is ramped using the default ramp time, one minute.

6.3

8.2

7.7

7.2

6.5

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CN8-SWÔ UserÕs Guide

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

Communications

Logging [Stop Logging]

Start Find Controllers [Stop Find Controllers]

Access the window used to specify PC port and communication parameters to be used by the CN8-SW software. These parameters will override (but not change) the communication settings in your operating system for the selected port.

Access the window used to specify the time interval at which PV and SP for all controllers should be written to a log file, name the file, and turn on logging. When logging is active, this menu item becomes Stop Logging.

Start the process used by the CN8-SW software to poll each possible address on the network to see if there is a controller at that address. When this process is active, this menu item becomes Stop Find Controllers. The alternative to using this automatic process to enable the CN8-SW computer to recognize controllers is to recognize controllers one at a time using the Controller menu Add function.

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

New Access the window used to begin the process of

configuring a new ramp and soak recipe to be executed under the direction of CN8-SW.

4.4

4.4.2

S e c t i o n

9.2.1

Edit

Run Access the window used to select an existing recipe to

Hold

Resume

Stop Access the window used to stop (terminate) the execution

Access the window used to select an existing recipe (on any accessible drive) for edit.

run on one or more controllers.

Access the window used to hold (pause) execution of an active (running) recipe on one or more controllers. While a controller is in hold, its setpoint will not be changed.

Access the window used to resume (continue) execution of a ÒheldÓ recipe in one or more controllers.

of an active or ÒheldÓ recipe in one or more controllers.

H e l p M e n u

F u n c t i o n P u r p o s e

About CN8-SW

Access CN8-SW version information. If you phone for technical support, be ready to supply this number.

9.2.2

9.3.1

9.3.2

9.3.3

S e c t i o n

1-10

1.4.2 Menu Convention Used in This Manual

The instructions in this manual use the following format to tell you to use a particular item from a menu: <menu name> | <function>. For example, to tell you to access the Alarms function on the Controller menu, the instructions will say ÒSelect Controller |

AlarmsÓ.

1.5 General Instructions for Using CN8-SW Windows

When the instructions refer to ÒCN8-SW main windowÓ, this is a reference to the

graphic display showing images of controller front panels.

To select an item on display, move the cursor over the item and use the left button to click (or double-click when directed) on a display item to select it, unless the instructions in this manual specifically tell you to use the right button on your mouse.

Introduction

To select an item from a dropdown list, click on the

A list of choices will be displayed. Select an item from the list by placing the cursor on top of the item, then clicking the left mouse button.

To enter text or a numeric value, place the cursor somewhere in the text entry box and click to Ògain focusÓ on the box, then type in your text or value. If you make a mistake, use the Delete key to remove characters to the right of the cursor or the Backspace key to remove items to the left of the cursor.

To move the cursor from one text entry box to another in the same window, use the Tab key.

button next to a text entry box.

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CN8-SWÔ UserÕs Guide

1-12

2.1 Introduction

For communication to be established between the personal computer running the CN8SW software and an Omega controller that supports Omega Plus Protocol (or the original Omega Protocol), the computer and the controller must be connected to the same network. (See 1.2 for hardware and software requirements for the personal computer.)

Communication between a single controller and the CN8-SW computer can be established using an RS-232 interface. This requires:

· a n R S - 2 3 2 o p t i o n c a r d i n t h e c o n t r o l l e r

· a n a v a i l a b l e s e r i a l ( C O M ) p o r t o n t h e P C

· a n a d a p t e r t o m a k e t h e c o r r e c t p i n c o n n e c t i o n s f o r t h e t r a n s m i t , r e c e i v e ,

a n d s i g n a l g r o u n d a t t h e P C s e r i a l p o r t Õ s D - c o n n e c t o r .

2. Wiring the Network and

Connecting the Computer

Communication between the CN8-SW computer and multiple controllers can be established using an RS-485 interface.

· a n R S - 4 8 5 o p t i o n c a r d i n t h e c o n t r o l l e r

· a n a v a i l a b l e R S - 4 8 5 p o r t o n t h e P C , o r a n a v a i l a b l e s e r i a l ( C O M ) p o r t a n d

a n R S - 2 3 2 - t o - R S - 4 8 5 a d a p t e r ( p / n 2 2 3 A 0 0 1 U 0 1 )

This requires:

A T T E N T I O N : Al l wi r i n g sh o u l d b e do n e b y an ex p e r i e n c e d t e c h n i c i a n an d

b e i n s t a l l e d i n ac c o r d a n c e wi t h na t i o n a l a n d l o c a l el e c t r i c a l c o d e s . T o av o i d s e r i o u s p e r s o n a l i n j u r y a n d d a m a g e t o e q u i p m e n t , f o l l o w al l wa r n i n g s an d ca u t i o n s pr o v i d e d i n t h e c o n t r o l l e r ma n u a l s .

Up to 32 controllers can be included on an RS-485 network without using a network repeater device. The CN8-SW software can address up to 254 controllers.

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CN8-SWÔ UserÕs Guide

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.

Less than 50 ft.

Computer DB25 DB9

2 TX 3 3 RX 2

TxRx

13 14

11 12

Gnd

7 GND 5

Use a DB25 male or DB9 female connector.

RS-232 Communication:

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

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2.2.3 RS-485 Network

If your computer is equipped with an RS-485 interface, connect to the controller network in accordance with the instructions provided with that option card.

If you plan to use a serial (COM) port to connect to your network, install an RS-232-toRS-485 converter on the port (see diagram below). A suitable converter is available from Omega.

Wiring the Network and Connecting the Computer

Data cable assembly DB 9 to

RS-232/RS-485 converter; Omega part number 223A001U01*

DB 25, or DB 9 to DB 9

ending on your computer

Up to 2000 ft

(B) (A)

Other controllers

* Converter is supplied with a wallplug-mounted power transformer.

To Controller Terminal 14

To Controller Terminal 13

(A)

(B)

Computer

RS-232 port

Wire directly to screw terminals on converter. B on converter goes to A on unit, A on converter goes to B

+12 V

GND

RD(B)

RD(A)

TD(B)

TD(A)

RS-485 Communication:

One-to-many connection between an RS-232 port (with converter) and multiple

controllers; if the computer has an RS-485 port, no converter is needed

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CN8-SWÔ UserÕs Guide

2-4

3. Installing the Software and

3.1 Installing the Software

The CN8-SW software is supplied on a 3.5 inch diskette. Before installing the software, please read the licensing agreement. Installing the software indicates that you accept the terms of the agreement. Note that registered users are permitted to make one backup copy from the master diskette for their own use.

To install the software:

1. Optional, but recommended: Close any other applications that are running.

2. Put the CN8-SW diskette in the drive.

3. Select Start | Run. The Run window will open.

4. Type in the letter of your 3.5 inch drive, followed by :\Winstall. (For example, if your floppy drive is A, then type A:\Winstall.) The first installation window will be displayed.

Logging In

5. Click on OK to proceed. The next installation window will open.

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CN8-SWÔ UserÕs Guide

6. Select the drive where the software will be installed. Click on OK. The next installation window will open.

7. This window is used to specify the name of the directory in which the CN8-SW software will be installed. To accept the default name ÒMULTICOMÓ click on OK. To use a different name, type it in the box provided, then click on OK. Once you click on OK, the next installation window will open.

8. This window is used to specify the name of the software category that will be created on your operating systemÕs Program menu. To accept the default name ÒCN8-SWÓ, click on OK. To use a different name, type it in the box provided, then click on OK. Once you click on OK, the next installation window will open.

9. This window is a status window. You do not have to do anything more to install the software. If you want to stop the installation process, use the ESC key.

When the installation process has been completed successfully, the following window will be displayed.

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10. To close the window and exit the installation program, click on OK.

3.2 Starting the Software

Start the software as you would any other installed application.

Installing the Software and Logging In

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