Allen-Bradley ControlNet-to-DeviceNet 1788-CN2DN Installation Instructions Manual

1788-5.2B - October 1999

Installation Instructions

ControlNet-to-DeviceNet Linking Device

Catalog No. 1788-CN2DN

Product Overview

The ControlNet-to-DeviceNet (CN2DN) linking device connects a ControlNet™

network to a DeviceNet™ network. The DeviceNet network consists of multiple

DeviceNet devices, such as RediSTATIONs, photoeyes, etc. The ControlNet

network consists of controllers, such as PLC® processors, HMIs, drives, I/O

devices, and so on.

The CN2DN linking device has two broad functions, supporting closed-loop

control, and configuration and monitoring.

To the Installer

Use this document as a guide when you install the 1788-CN2DN.

.

Topic Page

System Requirements 3

CN2DN Hardware Description 4

Installing the CN2DN Module 4

ControlNet Connections 6

DeviceNet Connections 9

Setting the DNet Data Rate 11

Setting the Node Address Switches 10

The Example Installation 12

RSLogix5000™ Setup 12

ControlNet Setup Using RSNetWorx for ControlNet 17

DeviceNet Setup Using RSNetWorx for DeviceNet 21

Interpreting the Status Indicators 27

Compliance to European Union Directives 31

CSA Hazardous Location Approval 32

Specifications 34

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Handling the CN2DN

We recommend that you adhere to this precautionary information.

Precautionary Statements - Important User Information

Because of the variety of uses for the products described in this publication, those

responsible for the application and use of this control equipment must satisfy

themselves that all necessary steps have been taken to assure that each

application and use meets all performance and safety requirements, including any

applicable laws, regulations, codes, and standards.

The illustrations, charts, sample programs, and layout examples shown in this

guide are intended solely for purposes of example. Since there are many

variables and requirements associated with any particular installation,

Allen-Bradley does not assume responsibility or liability (to include intellectual

property liability) for actual use based upon the examples shown in this

publication.

Allen-Bradley publication SGI-1.1, Safety Guidelines for the Application,

Installation, and Maintenance of Solid State Control (available from your local

Allen-Bradley office), describes some important differences between solid-state

equipment and electromechanical devices that should be taken into consideration

when applying products such as those described in this publication.

Reproduction of the contents of this copyrighted publication, in whole or in part,

without the written permission of Allen-Bradley Company, Inc., is prohibited.

!

ATTENTION: This module contains ESD (Electrostatic

Discharge) sensitive parts and assemblies. Static control

precautions are required when installing or testing this assembly.

Component damage may result if these procedures are not

followed.

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System Requirements

This section describes the required hardware and software components you need

before you can use the CN2DN linking device.

Hardware

• ControlNet-to-DeviceNet linking device

• PC access to ControlNet through RSLinx™

• ControlNet and DeviceNet cabling

Software

•

Windows NT® 4.0 with service pack 3 or higher

•

RSLinx 2.10 or later; this is the driver for the Allen-Bradley PC interfaces.

•

RSNetWorx™ for ControlNet version 2.0 or later; this is the ControlNet

configuration tool.

•

RSNetWorx™ for DeviceNet version 2.11 or later; this is the DeviceNet

configuration tool.

Compatibility Information

The 1788-CN2DN linking device is compatible with DeviceNet and ControlNet

specifications as of this writing.

Related Publications

Title Publication Number

ControlNet Cable System, Planning and Installation Manual 1786-6.2.1

DeviceNet Cable System, Planning and Installation Manual DN-6.7.2-MAY99

ControlLogix ControlNet Bridge Installation Manual 1756-5.71

ControlLogix ControlNet Interface Module User Manual 1756-6.5.3

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CN2DN Hardware Description

Figure 1 shows the components of the CN2DN linking device.

Figure 1 CN2DN Linking Device

The CN2DN module is designed to be mounted on a 35 mm steel DIN rail. End

anchors are provided to keep the module in position.

The device has one ControlNet port with support for redundant media as well as

a ControlNet network access port. Rotary switches are used to set the ControlNet

node address. The CNet Status LEDs display the current status of each of the

redundant media channels.

The CN2DN has one DeviceNet port. Rotary switches are used to set the

DeviceNet node address and the data rate. DNet LEDs display the current status

of the network and the I/O channel.

Module Status and Linking Activity LEDs are also provided. For information

about the LEDs, see “Interpreting the Status Indicators” beginning on page 27.

The power supply connector is wired to 24V dc.

30901-M

Status LEDs

Power Supply

Connector

ControlNet Port

Network

Access

Port

DeviceNet

Port

Rotary

Switches

End Anchor

DIN Rail

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Installing the CN2DN Module

The CN2DN module has a clip for mounting on a standard 35 mm steel DIN rail.

Follow these steps to mount the CN2DN onto the DIN rail.

Important: You must use a steel DIN rail (A-B P/N 199-DR1 or equivalent) to

meet vibration specifications listed on page 34.

1. Press the module straight onto the DIN rail at the desired location. Be sure

that both latches snap into place.

Figure 2 Mounting the CN2DN Module on the DIN Rail

2. Use the supplied end anchors to lock the module into place.

Figure 3 End Anchors and Mounting Tabs

Note that for very high shock applications the module may be bolted to the panel

through the four mounting tabs on the base.

DIN Rail

CN2DN Module

PRESS ON

Wall or Support

30901-M

Mounting Tabs

End Anchor

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Removing the CN2DN module

To remove the CN2DN module, simultaneously pull the 2 DIN rail latches away

from the rail and pull the module off the panel. (Note: This may require two

screwdrivers to open the latches.)

Connecting Power

The CN2DN linking device requires 18-26V dc input power. The CN2DN filters

and regulates the supplied power. The power connector is a 4-pin redundant

screw terminal connector. The pinout for the power connector is shown in

Figure 4.

Figure 4 Power Connector Pinout

Connect the primary power supply to the left + and - pair. The right + and - pair

may be used to chain the primary power supply to other devices.

Important: The connection to downstream devices will not be made unless the

connector is plugged in to the CN2DN.

ControlNet Connections

BNC Connectors

The BNC connectors on the unit should be connected to a ControlNet network

through a tap. The BNC connectors must be used to connect the CN2DN linking

device to the ControlNet network.

30906-M

+ - + -

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Refer to publication number 1786-6.2.1, ControlNet Cable System Planning and

Installation Manual, for further information.

Figure 5 ControlNet Connections

Network Access Port (NAP)

The CN2DN includes a Network Access Port (NAP) with an RJ-45 connector for

connecting programming terminals to devices on the ControlNet network. You

can use the NAP to temporarily connect a device such as a laptop computer to the

network.

Important: Do not connect the CN2DN to more than one ControlNet network

at a time. Attempting to connect to a second network will cause the

CN2DN to operate erratically.

!

ATTENTION: If you connect the product to a cable system that

does not support redundant media, connect the tap dropline to the

BNC connector labeled channel A. channel B is left open when

using single media.

If the cable system is redundant, connect all channel A connectors

to one cable, and all channel B connectors to the other cable.

30904-M

Network Access Port (NAP)

BNC Connectors

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Figure 6 shows an example of a typical ControlNet network connection.

Figure 6 Typical CN2DN Connections to a ControlNet Network

trunk cable A =

trunk cable B =

A

B

30907-M

ControlNet Device

Linking

Device

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DeviceNet Connections

The location of the DeviceNet connector is shown in figure 7.

Figure 7 DeviceNet Connector on the CN2DN

Use an open-style 5- or 10-position linear plug to connect to the DeviceNet

network. An open-style 10-position linear plug is provided with your CN2DN.

Wire the connector as shown in figure 8.

Figure 8 Connector Pinout to CN2DN

Refer to publication number DN-6.7.2, DeviceNet Cable System Planning and

Installation Manual, for further information.

30902-M

DeviceNet Connector

Black

Blue

White

Red

Bare

DeviceNet Drop Line

g

Red

White

Clear

Blue

Black

10-position pluge 5-position pluge

30919-M

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Setting the Node Address Switches

Important: When using a 1788-CN2DN, the ControlNet network must have an

“Active Keeper” to keep track of network scheduling, clock

synchronization, etc.

Refer to publication 1756-5.71, ControlLogix ControlNet Bridge, for

information on configuring a 1756-CNB module.

CN2DN ControlNet Address

Choose and set a ControlNet network address for the CN2DN. Refer to figure 9.

Important: ControlNet addresses must be in the range 01-99.

Figure 9 CNet Node Address Switches

CN2DN DeviceNet Address

Choose and set a DeviceNet network address for the CN2DN. Refer to figure 10:

Important: DeviceNet addresses must be in the range 00-63.

Figure 10 DNet Node Address Switches

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Setting the DNet Data Rate

Set the data rate for your DeviceNet network: 125K, 250K, or 500K. Data rate

settings in the PGM area are not supported.

Refer to figure 11:

Figure 11 DNet Data Rate Switch

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The Example Installation

This installation manual provides an example showing how to link the DeviceNet

network to a ControlNet network to communicate with a Logix5550 controller. A

1756-CNB interface module must be in the chassis with the Logix5550

controller. Note that this is but one example. The CN2DN linking device can be

used with any Allen-Bradley controller that is provided with a ControlNet

interface.

RSLogix5000

™

Setup

1. Open the RSLogix5000 software.

2. From the File menu select New.

The

New Controller pop-up window will appear.

3. Enter the appropriate information in the following fields:

•Name (enter a controller name of your choice)

• Chassis Type (select the chassis size from the pull-down list)

• Slot Number (select the controller’s slot number from the pull-down list)

• Description (this field is optional)

•Create In (select the folder where the project will be saved)

4. Click on OK.

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The software will save the New Controller data and the following screen will

appear:

I/O Configuration

Next, you must add the 1756-CNB interface module to the I/O configuration of

the controller. Then you will add the 1788-CN2DN linking device as a “child” of

the 1756-CNB module.

To add the 1756-CNB module to the I/O Configuration, perform the following

steps:

1. Right-click on the I/O Configuration folder at the bottom of the project

window, as seen in the figure above.

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The following pop-up menu will appear.

2. Select New Module.

The Select Module Type window will appear:

3. Select the 1756 ControlNet Bridge from the list and click on OK.

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The Module Properties window will appear:

4. Enter a Name for the ControlNet 1756-CNB module and select the chassis

Slot it occupies.

5. Disable Electronic Keying.

6. Click on the button.

The 1756-CNB module will be added to the I/O Configuration folder.

Now add the 1788-CN2DN linking device to the I/O configuration by performing

the following steps:

1. Right-click on the 1756-CNB module you have just created.

2. Select New Module from the pop-up window.

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The Select Module Type window will appear.

3. Select the 1788-CN2DN ControlNet to DeviceNet Linking Device and click

on OK (the 1788-CN2DN_04 Device is recommended).

The

Module Properties window will appear.

4. Enter a Name of you choice for the 1788-CN2DN module.

5. Select the ControlNet Node address that you have set with the faceplate

switches.

6. Disable Electronic Keying.

7. Click on the button.

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The I/O configuration should now appear as shown below:

ControlNet Setup Using RSNetWorx for ControlNet

If you are using a ControlLogix 5550 processor, the following can be used as part

of your setup.

1. Open the RSNetWorx for ControlNet software.

2. Check the Edits Enabled box and click on the Online button

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The Browse for Network window will appear. Your window may appear

different from that shown below depending upon the drivers you have

installed in your system, but you should have a ControlNet driver (e.g., a

1784-KTCX15 card) configured.

3. Select the ControlNet driver.

The software will browse the ControlNet network for connected devices.

When it is finished browsing, your network should appear similar to that

shown below.

4. Verify that the 1756-CNB module is node 1 on the network (required for

Active Keeper).

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5. Select Network from the RSNetWorx for ControlNet main menu bar.

6. Select Properties from the pull-down menu.

The following window will appear:

7. Set the following parameters to appropriate values for your system:

• Network Update Time - 10 ms is a typical value

• Max Scheduled Address - set to the highest node address of scheduled

devices on your ControlNet

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• Max Unscheduled Address - set to the highest node address used on your

ControlNet (i.e., do not set to 99 unless you

have 99 nodes on your network).

8. Click on OK.

9. From the File menu, select Save.

The following prompt will appear:

10.Select “Optimize and re-write schedule for all connections” and click on OK.

The ControlNet network is now configured and scheduled, and the controller is

able to communicate with the ControlNet devices.

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