Rosemount Smart Wireless Gateway Manuals & Guides

Emerson Wireless 1420 Gateway

Reference Manual

00809-0200-4420, Rev HE

September 2020

Safety Messages

NOTICE

Read this manual before working with the product. For personal and system safety, and for optimum product performance, make
sure you thoroughly understand the Contents before installing, using, or maintaining this product.

WARNING

Failure to follow these installation guidelines could result in death or serious injury.

Ensure only qualified personnel perform the installation.

Explosions could result in death or serious injury.

Verify that the operating atmosphere of the transmitter is consistent with the appropriate hazardous locations certifications.

Electrical shock could cause death or serious injury.

If the device is installed in a high-voltage environment and a fault condition or installation error occurs, high voltage may be
present on transmitter leads and terminals.

Use extreme caution when making contact with the leads and terminals.

This device complies with Part 15 of the FCC Rules. Operation is subject to the following conditions:

This device may not cause harmful interference.
This device must accept any interference received, including interference that may cause undesired operation.
This device must be installed to ensure a minimum antenna separation distance of 20 cm from all persons.

The products described in this document are NOT designed for nuclear-qualified applications. Using non-nuclear qualified
products in applications that require nuclear-qualified hardware or products may cause inaccurate readings.For information on
Rosemount™ nuclear-qualified products, contact your local Emerson Sales Representative.

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Contents

Chapter 1 Introduction.............................................................................................................. 5

1.1 Product overview.........................................................................................................................5

1.2 Using this manual........................................................................................................................ 5

1.3 Product recycling/disposal...........................................................................................................6

Chapter 2 Configuration............................................................................................................ 7

2.1 Overview..................................................................................................................................... 7

2.2 System requirements...................................................................................................................7

2.3 Initial setup..................................................................................................................................7

Chapter 3 Installation...............................................................................................................17

3.1 Overview................................................................................................................................... 17

3.2 Mounting...................................................................................................................................17

3.3 Remote antenna (optional)........................................................................................................19

3.4 Connecting................................................................................................................................23

Chapter 4 Commissioning ....................................................................................................... 35

4.1 Overview................................................................................................................................... 35

4.2 System requirements.................................................................................................................35

4.3 Software installation..................................................................................................................36

4.4 Security Setup Utility................................................................................................................. 36

4.5 AMS Wireless Configurator........................................................................................................ 38

4.6 Licensing and credits................................................................................................................. 40

Chapter 5 Operation and Maintenance.....................................................................................43

5.1 Overview................................................................................................................................... 43

5.2 Network architecture.................................................................................................................43

5.3 Internal firewall..........................................................................................................................46

5.4 Modbus..................................................................................................................................... 47

5.5 EtherNet/IP................................................................................................................................53

Chapter 6 Troubleshooting...................................................................................................... 57

6.1 Service support..........................................................................................................................57

6.2 Troubleshooting Tables............................................................................................................. 57

6.3 Return of materials.................................................................................................................... 61

Chapter 7 Glossary................................................................................................................... 63

Appendix A Specifications and Reference Data............................................................................65

A.1 Functional specifications........................................................................................................... 65

A.2 Physical specifications............................................................................................................... 66

A.3 Communication specifications.................................................................................................. 67

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A.4 Self-organizing network specifications...................................................................................... 68

A.5 System security specifications................................................................................................... 68

A.6 Dimensional drawings............................................................................................................... 70

A.7 Ordering information................................................................................................................ 72

A.8 Accessories and spare parts....................................................................................................... 73

Appendix B Product Certifications.............................................................................................. 75

B.1 European directive information................................................................................................. 75

B.2 Telecommunication Compliance............................................................................................... 75

B.3 FCC and IC................................................................................................................................. 75

B.4 Ordinary location certification ...................................................................................................75

B.5 Installing Equipment in North America.......................................................................................75

B.6 USA............................................................................................................................................75

B.7 Canada...................................................................................................................................... 76

B.8 Europe.......................................................................................................................................76

B.9 International..............................................................................................................................77

B.10 Brazil........................................................................................................................................77

B.11 China....................................................................................................................................... 78

B.12 Japan....................................................................................................................................... 78

B.13 EAC – Belarus, Kazakhstan, Russia............................................................................................78

B.14 Combination............................................................................................................................78

Appendix C DeltaV™ Ready.........................................................................................................79

C.1 Overview................................................................................................................................... 79

C.2 Latency considerations in control logic design and operation.................................................... 79

C.3 Requirements............................................................................................................................79

C.4 Mounting and connecting......................................................................................................... 79

C.5 Setup.........................................................................................................................................80

Appendix D Redundancy.............................................................................................................85

D.1 Overview...................................................................................................................................85

D.2 Requirements............................................................................................................................85

D.3 Setup redundant gateways........................................................................................................85

D.4 Mounting and connections........................................................................................................88

D.5 Diagnostics............................................................................................................................... 92

D.6 Gateway replacement............................................................................................................... 94

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Introduction

1 Introduction

1.1 Product overview

The Emerson™ Wireless 1420 Gateway (Gateway) connects WirelessHART® self-organizing
networks with host systems and data applications. Modbus® communications over RS-485
or Ethernet LAN provide universal integration and system interoperability. The optional
OPC functionality from the Gateway offers a means to connect to newer systems and
applications while providing a richer set of data.

The Gateway provides industry leading security, scalability, and data reliability. Layered
security ensures that the network stays protected. Additional devices can be added at
anytime. There is no need to configure communication paths because the Gateway
manages the network automatically. This feature also ensures that WirelessHART field
devices have the most reliable path to send data.

What is included?

The box containing the Gateway contains several items essential to the complete
installation and operation of the Gateway.

• Emerson Wireless 1420 Gateway

• Quick Start Guide

• Software pack, 2-disk set

• Mounting hardware

• Conduit plugs, four

• Conduit adapters (optional)

If an optional remote antenna has been ordered, it will be in a separate box containing:

• Remote mount antenna

• Mounting hardware

• Lightning arrestor

• Cable (one or two pieces that total 50 ft. [15,2 m] in length)

• Coaxial sealant

1.2 Using this manual

This manual will help to install, configure, operate, and maintain the Gateway.

Introduction introduces the product and describes what components may be found in the

box. It also includes details for services and support as well as return and disposal of the
product.

Configuration describes how to connect to the Gateway for the first time and what

settings should be configured before placing it on a live control network. It is important to

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note that some Gateways are used in stand-alone applications and do not reside on a
network. In these cases, it is still important to configure the items outlined in this section.

Installation describes how to properly mount the Gateway and make electrical

connections, including electrical wiring, grounding, and host system connections. This
section also describes how to mount the optional remote antenna.

Commissioning describes the installation and setup of the optional software included with

the Wireless Gateway. This software will aid in secure host integration as well as wireless
field device configuration.

Operation and Maintenance describes how to connect the Gateway to a host system and

integrate data gathered from the field device network. It covers network architectures,
security, and data mapping.

Troubleshooting provides troubleshooting tips as well as information to contact technical

support over the phone or through email.

Glossary defines terms used throughout this manual or that appear in the web interface of

the Wireless Gateway.

Appendices provide additional and more specific information on a variety of subjects
including Specifications and Reference Data and Product Certifications.

1.3 Product recycling/disposal

Consider recycling equipment and packaging. Dispose of the product and packaging in
accordance with local and national legislation.

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2 Configuration

2.1 Overview

This section describes how to connect to the Emerson™ Wireless 1420 Gateway (Gateway)
for the first time and what settings should be configured before placing it on a live control
network. It is important to note that some Gateways are used in stand-alone applications
and do not reside on a network. In these cases, it is still important to configure the items
outlined in this section.

Before the Gateway can be permanently mounted and connected to a live control
network, it needs to be configured with an IP address. This is done by forming a private
network between the gateway and a PC/laptop. The following items are needed to
complete this section:

• Gateway

• PC/laptop

• 24 VDC (nominal) power supply

Note

If the Gateway was ordered with the DeltaV™ Ready option, it has been configured to
operate on a DeltaV control network, and the Initial Configuration Section does not need
to be completed. Only setting the password is required.

2.2 System requirements

The following requirements apply to the PC/laptop used to configure the Gateway.
Additional requirements may apply if using the optional Security Setup Utility or AMS
Wireless Configurator. See Commissioning for more information.

Web browser applications

• Mozilla Firefox® 1.5 or higher

• Microsoft® Internet Explorer® 7.0 or higher

Ethernet

• 10/100BaseTX Ethernet communication protocol

2.3 Initial setup

Note

For information on connecting a Windows™ 7 PC, see the technical note (document
number 00840-0900-4420).

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2.3.1 Prepare PC/laptop

The PC/laptop will need to be configured to form a private network before communicating
to the Gateway. The network settings can be found in the control panel of the PC/laptop.
To configure these settings:

Procedure

1. Find and open the Control Panel (Generally found from the Start Menu).

2. Open Network Connections.

3. Select Local Area Connection or Network and Sharing Center.

4. Right click the mouse and select Properties from the list.

5. Select Internet Protocol (TCP/IP), then select Properties.

6. From the General tab, select Use the following IP address.

7. Set the IP Address to “192.168.1.12” and select Tab.

8. A Subnet mask of 255.255.255.0 should fill in automatically.

9. Select OK to close the Internet Protocol (TCP/IP) window.

10. Select Close on the Local Area Connection window.

2.3.2

Disable Internet proxies

Internet proxies will need to be disabled through the PC/laptop’s default Internet browser.

Procedure

1. Find and open the default internet browser (typically Microsoft Internet Explorer).

2. From the Tools menu, select Internet Options.

3. From the Connections tab, select LAN Settings.

4. Under Proxy Server, verify the boxes for Automatically Detect Settings and Use a
proxy server for your LAN are unchecked.

5. Select OK to close the Local Area Network (LAN) Settings window.

6. Select OK to close the Internet Options window.

Example

The PC/laptop is now set up to form a private network and to communicate with the
Gateway.

Note

Connecting to the Gateway's secondary Ethernet port will require different network
settings. See Table 2-1 for additional network settings.

Table 2-1: Default IP Addresses

Gateway PC/laptop Subnet

Ethernet 1 192.168.1.10 192.168.1.12 255.255.255.0

Ethernet 2 192.168.2.10 192.168.2.12 255.255.255.0

Ethernet 1 (DeltaV Ready) 10.5.255.254 10.5.255.200 255.254.0.0

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Table 2-1: Default IP Addresses (continued)

Gateway PC/laptop Subnet

Ethernet 2 (DeltaV Ready) 10.9.255.254 10.9.255.200 255.254.0.0

2.3.3 Connections and power

Physically connect the PC/laptop to the Gateway by connecting one end to the Ethernet
port on the back of the PC/laptop. Connect the other end to the Ethernet 1 port on the
Gateway. Figure 2-1 shows the standard terminal block diagram. Once the Gateway and
PC/laptop are connected, wire a 24 VDC (nominal) power supply with a capacity of at least
250 mA to the Gateway power input terminals.

Determining Gateway compatibility with Power over Ethernet (PoE)

Figure 2-1: Legacy Gateway Terminal Block

A. Case
B. Ethernet 2 with power (covered)
C. Ethernet 2 (secondary)

D. Ethernet 1 (primary)

E. 24 VDC (nominal) power input
F. Serial Modbus

G. Not used

®

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Figure 2-2: PoE Compatible Gateway Terminal Block

A. Case
B. Ethernet 2 (secondary)
C. Ethernet 1 (primary)

D. 24 VDC (nominal) power input

E. Serial Modbus

WARNING

When making physical connections to the Gateway it is important to use the electrical
conduit entries located on the bottom of the housing. Connecting through the open
terminal block cover (the lower cover) may stress the connections and damage the
Gateway.

Power over Ethernet

This Gateway is equipped with PoE technology to allow it to source power to a compatible
device over the connecting Ethernet cable (PSE mode) or derive its power from another
PoE device via the Ethernet connection (PD mode). This device complies with the IEEE

802.3at-2009 standard for PSE operation and IEEE 802.3af-2003 or IEEE 802.3at -2009 for
PD operation. These standards require the use of Category 5 Ethernet cable or higher.

In the operation of IEEE 802.3a, PoE power is only transmitted from one device to another
when the proper impedance match is made. This prevents damage to non PoE devices on
the network. In the Gateway, power is transmitted in passive mode over two unused
differential pairs of the Ethernet cable. To use this feature, the Gateway must be
connected over the Ethernet to a matching IEEE 802.3a device. Failure to do this will cause
no power to be sent or sourced.

A set of switches on the power supply board allow the selection of the specific Ethernet
port for PoE and the selection of whether it is a PSE (Power Sourcing Equipment) sourcing
power or a PD (Powered Device) deriving its power from another IEEE 802.9 PSE device.
See Figure 2-3 for the switch diagram required for PoE configuration.

Note

The Gateway can either source or receive power over an Ethernet port; it cannot do both
at the same time.

If using the Gateway as a PSE, the total additional power requirements of the PD must be
factored into the total input power requirements of the power supply for the Gateway. It is

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P D P DP S E

E T H 1 E T H 2 P S E

P S E

E N

D I S

S

A

B

Case

Ethernet 2

Ethernet 1

To Host

Power

Modbus10.5V-30V

Input Power

S

A

B

Modbus10.5V-30V

Input Power

Case

Ethernet 2

Ethernet 1

From PSE Device

Power

P D P DP S E

E T H 1 E T H 2 P S E

P S E

E N

D I S

To Host

Data

P D P DP S E

E T H 1 E T H 2 P S E

P S E

E N

D I S

Power

S

A

B

Case

Ethernet 2

Ethernet 1

To Host

To POE Device

Power

Modbus10.5V-30V

Input Power

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recommended that the power selection mode switch be left in the PD position unless PSE
is needed.

Figure 2-3: Gateway PoE Jumpering

Traditionally powered Gateway

PoE, Gateway as a PD via Ethernet Port 2

PoE, Gateway as a PSE via Ethernet Port 2

• ETH1: Ethernet port 1 selected for PD or PSE

• ETH2: Ethernet port 2 selected for PD or PSE

• PD: Gateway derives power from the Ethernet port selected

• PSE: Gateway derives power from a local power supply and sends power down the

Ethernet port selected to another device

• EN: Enabled; this enables the PSE operation

• DIS: Disabled; this disables the PSE operation

Note

Only one port and one mode of operation (PD or PSE) can be selected at a time; any other
combination of jumpers is invalid.

Note

IEEE 802.3af-2003 PoE standard provides up to 15.4 W of DC power (minimum 44 V DC
and 350 mA) to each device. Only 12.95 W is assured to be available at the powered device
as some power is dissipated in the cable. IEEE 802.3at-2009 PoE standard also known as
“PoE+” or “PoE plus”, provides up to 25.5 W of power. The 2009 standard prohibits a
powered device from using all four pairs for power.

For more information on PoE and frequently asked questions, refer to Emerson Wireless

1420 Gateway with Power over Ethernet Technical Note or Power over Ethernet (PoE).

In order to use both ports for PoE, remember to order option code “2” when selecting
number of Ethernet ports.

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2.3.4 Configure the Gateway

It is now possible to log into the Gateway for the first time and begin configuration for
placement on a live control network. The following items need to be configured:

• Security passwords

• Time settings

• TCP/IP network settings

Use the following procedure to log in to the Gateway:

Procedure

1. Open a standard web browser (typically Microsoft Internet Explorer).

2. Enter “192.168.1.10” in the address bar.

3. Acknowledge the security to proceed.

4. In the User Name field, enter “admin”.

5. In the Password field, enter “default”.

Example

The web browser will now be directed to the Gateway’s default home page. There is a
navigation menu located on the left hand side with four main areas.

• Diagnostics: view status of communications, client server parameters, and more

• Monitor: screens created by the user to view data from field devices

• Explorer: basic view of values from field devices

• Setup: configure the Gateway for operations, security, and host system integration

Security passwords

There are four-role based user accounts for the Gateway with varying levels of access. The
table below describes this access.

Table 2-2: Role Based Access User Accounts

Role User name Web interface access

Executive exec Read-only access

Operator oper Read-only access

Maintenance maint Configure HART® device settings

Configure Modbus® communications
Configure Modbus register mapping
Configure OPC browse tree
Configure Active Advertising

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Table 2-2: Role Based Access User Accounts (continued)

Role User name Web interface access

Administrator admin Includes all maintenance privileges

Configure Ethernet network settings
Configure WirelessHART® network settings
Set passwords
Set time settings
Set home page options
Configure custom point pages
Restart applications

Each of the initial passwords for the user accounts is default. It is recommended, for
security purposes, that these passwords are changed. The administrator password should
be appropriately noted when changed. If it is lost, contact Emerson for technical support.

To change the user accounts passwords:

Procedure

1. Navigate to System Settings → Users → User options.

2. Click Edit.

3. Set the new password for each role based user account, and confirm.

4. Click Submit.

Note

It is suggested that the default security settings in System Settings>Users>User
options be changed to the local IT best practices or the Normal setting after initial
login. Strong or custom settings are available for more robust passwords. For more
information on this screen and others, see the Emerson Wireless Gateway User
Interface Terminology Guide.

Time settings

The Gateway is the timekeeper for the WirelessHART network, so it is imperative that the
Gateway’s time is accurate for timestamp data to be meaningful. Time settings can be
found by navigating to System Settings → Gateway → Time.

There are three ways to set the Gateway time:

• Network Time Protocol (recommended)
— This option uses a Network Time Protocol (NTP) server to adjust the Gateway’s time

in order to match the time of the control network. Enter the IP address for the NTP
server and select the packet version (1, 2, 3, or 4).

• Set with PC Time
— This option will match the Gateway’s time to that of the PC/laptop.

• Manual Entry
— This option allows the user to enter a specific date (MM:DD:YY) and time

(HH:MM:SS).

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Note

Network Time Protocol (NTP) is recommended for the best network performance because
it always adjusts time to match the network time server.

Figure 2-4: Time Settings

TCP/IP network settings

WARNING

Use caution when making changes to the TCP/IP network settings. If they are lost or
improperly configured, it may be impossible to log into the Gateway. Contact the network
administrator for information on the proper TCP/IP network settings to apply.

Prior to the gateway being installed and connected to a live control network, it should be
configured with an IP address, as well as other TCP/IP network settings.

Request the following configuration items from the network administrator:

• Specify an IP address, or use a DHCP server

• Hostname

• Domain Name

• IP address

• Netmask

• Gateway

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Obtaining an IP address from a DHCP server is not recommended, since the Gateway
operation will be dependent upon the availability of the DHCP server. For maximum
gateway availability it is best practice to specify an IP address.

To change the TCP/IP Network Settings:

Procedure

1. Navigate to System Settings → Gateway → Ethernet Communication.

2. Select Specify an IP address (recommended).

3. Enter the following:

• Hostname

• Domain Name

• IP Address

• Netmask

• Gateway

4. Select Save Changes.

5. When prompted, select Restart apps.

6. Select Yes to confirm restart.

7. Close the web browser.

Note

Once the IP Address of the Gateway has been changed, communications to the web
interface will be lost. Restart the web browser, then log back into the Gateway using
the new IP address and other TCP/IP network settings. The PC/laptop TCP/IP
network settings may need to be changed.

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Figure 2-5: Ethernet Settings

2.3.5 System backup

The Gateway has a System Backup and Restore feature that saves all user-configured data.
It is best practice that a System Backup be performed periodically throughout the
installation and configuration process.

Procedure

1. Navigate to System Settings → Gateway → Backup And Restore.

2. Select Save Backup.

3. The Gateway collects the configuration date and when the file download pop up
appears, select Save.

4. Enter a save location and file name.

5. Select Save.

6. Select Return to form.

Note

System backup contains user passwords and keys used for encrypting
communication. Store downloaded system backups in a secure location. These files
themselves are also encrypted.

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3 Installation

3.1 Overview

This section describes how to properly mount the Emerson™ Wireless 1420 Gateway
(Gateway) and make electrical connections, including electrical wiring, grounding, and
host system connections. This section also describes how to mount the optional remote
antenna.

3.1.1 General considerations

The Gateway may be mounted in any general purpose location. Be sure the covers are
secured tightly to prevent exposure of any electronics to moisture and contamination.

The Gateway should be mounted in a location that allows convenient access to the host
system network (process control network) as well as the wireless field device network.

3.1.2

Physical description

For dimensional drawing information refer to Product Certifications. The cast aluminum
housing encloses the electronics circuitry of the Gateway. The front of the enclosure has
an upper cover and a junction box cover. The upper cover provides access to the
electronics and radio. The junction box cover provides access to the terminal block.

To open either cover, use a 1/4-in. bladed screwdriver to remove the appropriate screw on
the unhinged side of the enclosure.

3.2 Mounting

Find a location where the Gateway has optimal wireless performance. Ideally this will be 15
to 25 ft (4,6 to 7,6 m) above the ground or 6-ft. (2 m) above obstructions or major
infrastructure. Figure 3-1 shows an example Gateway installation.

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(4,6 to 7,6 m)

6 ft (2 m)

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Figure 3-1: Gateway Installation

A. Control room
B. Ground
C. Gateway

D. Mast or pipe

E. Infrastructure

3.2.1

Pipe mount

The following hardware and tools are needed to mount the Gateway to a 2-in. pipe:

• Two -in. u-bolts (supplied with Gateway)

• 2-in. mounting pipe

• -in. socket-head wrench

Mount the Gateway using the following procedure:

Procedure

1. Insert one u-bolt around the pipe, through the top mounting holes of the Gateway
enclosure, and through the washer plate.

2. Use a -in. socket-head wrench to fasten the nuts to the u-bolt.

3. Repeat for the second u-bolt and the lower mounting holes.

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Figure 3-2: Pipe Mount

3.2.2 Bracket mount (alternate)

The following hardware and tools are needed to mount the Gateway to a support bracket:

• Four 15/16-in. bolts

• Mounting support bracket

• 3/8-in. drill

• 1/2-in. socket-head wrench

Mount the Gateway using the following procedure:

Procedure

1. Drill four 3/8-in. (9,525 mm) holes spaced 3.06-in. (77 mm) apart horizontally and

11.15-in. (283 mm) apart vertically in the support bracket, corresponding with the
holes on the Gateway enclosure.

2. Using a 1/2-in. socket-head wrench, attach the Gateway to the support bracket with
four 15/16-in. bolts.

3.3 Remote antenna (optional)

The remote antenna options provide flexibility for mounting the Gateway based on
wireless connectivity, lightning protection, and current work practices.

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WARNING

When installing remote mount antennas for the Gateway, always use established safety
procedures to avoid falling or contact with high-power electrical lines.

Install remote antenna components for the Gateway in compliance with local and national
electrical codes and use best practices for lightning protection.

Before installing consult with the local area electrical inspector, electrical officer, and work
area supervisor.

The Gateway remote antenna option is specifically engineered to provide installation
flexibility while optimizing wireless performance and local spectrum approvals. To
maintain wireless performance and avoid non-compliance with spectrum regulations, do
not change the length of cable or the antenna type.

If the supplied remote mount antenna kit is not installed per these instructions, Emerson is
not responsible for wireless performance or non-compliance with spectrum regulations.

The remote mount antenna kit includes coaxial sealant for the cable connections for the
lightning arrestor and antenna.

3.3.1

Find a location where the remote antenna has optimal wireless performance. Ideally this
will be 15–25 ft. (4,6 to 7,6 m) above the ground or 6 ft. (2 m) above obstructions or major
infrastructure. To install the remote antenna use one of the following procedures:

Installation of WL2/WN2 option (outdoor applications)

Procedure

1. Mount the antenna on a 1.5- to 2-in. pipe mast using the supplied mounting
equipment.

2. Connect the lightning arrestor directly to the top of the Gateway.

3. Install the grounding lug, lock washer, and nut on top of the lightning arrestor.

4. Connect the antenna to the lightning arrestor using the supplied coaxial cable
ensuring the drip loop is not closer than 1 ft (0,3 m) from the lightning arrestor.

5. Use the coaxial sealant to seal each connection between the wireless field device,
lightning arrestor, cable, and antenna.

6. Ensure the mounting mast, lightning arrestor, and Gateway are grounded
according to local/national electrical code.

Note

Any spare lengths of coaxial cable should be placed in 12-in. (0,3 m) coils.

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Example

Figure 3-3: Installation of WL2/WN2 Option

Installation

3.3.2

A. Control building
B. Remote antenna
C. Cable

D. Drip loop

E. Lightning arrestor

F. Gateway
G. Ground
H. Earth

Installation of WL3/WL4 Option (indoor to outdoor applications)

Procedure

1. Mount the antenna on a 1.5- to 2-in. pipe mast using the supplied mounting
equipment.

2. Mount the lightning arrestor near the building egress.

3. Install the grounding lug, lock washer, and nut on top of lightning arrestor.

4. Connect the antenna to the lightning arrestor using the supplied coaxial cable
ensuring the drip loop is not closer than 1 ft. (0,3 m) from the lightning arrestor.

5. Connect the lightning arrestor to the Gateway using the supplied coaxial cable.

6. Use the coaxial sealant to seal each connection between the Gateway, lightning
arrestor, cable, and antenna.

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7. Ensure that the mounting mast, lightning arrestor, and Gateway are grounded
according to local/national electrical codes.

Note

Any spare lengths of coaxial cable should be placed in 12-in. (0,3 m) coils.

Example

Figure 3-4: Installation of WL3/WL4 Option

Reference Manual

A. Control building
B. Remote antenna
C. Cable

D. Drip loop

E. Lightning arrestor

F. Gateway
G. Ground
H. Earth

CAUTION

Weather proofing is required!

The remote mount antenna kit includes coaxial sealant for the cable connections for the
lightning arrestor, antenna, and Gateway. The coaxial sealant must be applied to
guarantee performance of the wireless field network. See Figure 3-5 for details on how to
apply weather proofing.

22 Emerson.com/Rosemount

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Figure 3-5: Applying Coaxial Sealant to Cable Connections

Table 3-1: Remote Antenna Kit Options

Kit option Antenna Cable 1 Cable 2 Lightning arrestor

WL2 Wavelength

Dipole Omni­Directional +6
dB Gain

WL3 Wavelength

Dipole Omni­Directional +6
dB Gain

WL4 Wavelength

Dipole Omni­Directional +6
dB Gain

WN2 Wavelength

Dipole Omni­Directional +8
dB Gain

3.4 Connecting

All connections to the Gateway can be made at the terminal block, which is located in the
lower junction box section of the enclosure. The terminal block label is located on the
inside of the lower cover. See Figure 3-6 for the standard terminal block label.

The junction box portion of the enclosure has four conduit entries for power and
communications wiring. Do not run communication wiring in conduit or open trays with
power wiring, or near heavy electrical equipment.

50 ft. (15,2 m)
LMR-400

30 ft. (9,1 m)
LMR-400

40 ft. (12,2 m)
LMR-400

25 ft. (7,6 m)
LMR-400

N/A Head mount, jack to plug

Gas discharge tube

0.5 dB insertion loss

20 ft. (6,1 m)
LMR-400

10 ft. (3,0 m)
LMR-400

N/A Head mount, jack to plug

In-line, jack to jack
Gas discharge tube

0.5 dB insertion loss

In-line, jack to jack
Gas discharge tube

0.5 dB insertion loss

Gas discharge tube

0.5 dB insertion loss

Install the included conduit plugs in any unused conduit openings. For NEMA® 4X and IP65
requirements, use thread seal (PTFE) tape or paste on male threads to provide a watertight
seal.

3.4.1

Grounding

The Gateway enclosure case should always be grounded in accordance with national and
local electrical codes. The most effective grounding method is a direct connection to earth
ground with minimal impedance. Ground the Gateway by connecting the external
grounding lug to earth ground. The connection should be 1Ω or less. The external ground
plug is located below the Gateway enclosure and is identified by the following symbol:

Emerson.com/Rosemount 23

+

+

+++

-

A B

S

SSS

S

A

B

C

D

E

F G

G

G

G

+

- A B

S

A

B C

D

E

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Reference Manual

3.4.2 Ethernet

The Gateway is equipped with two 10/100BaseTX Ethernet communications ports (see

Figure 3-6). These connections can be used to access the Gateway’s web interface and to

communicate Modbus® TCP and OPC protocols.

The primary Ethernet port (Ethernet 1) is used to connect to the host system or other
application systems. The secondary Ethernet port (Ethernet 2) can be used as a back up
connection or a maintenance port for local access to the Gateway.

Figure 3-6: Terminal Block

A. Case
B. Ethernet 2 with power (covered)
C. Ethernet 2 (secondary)

D. Ethernet 1 (primary)

E. 24 VDC (nominal) power input

F. Serial Modbus
G. Not used

Figure 3-7: PoE Compatible Gateway Terminal Block

A. Case
B. Ethernet 2 (secondary)
C. Ethernet 1 (primary)

D. 24 VDC (nominal) power input

E. Serial Modbus

24 Emerson.com/Rosemount

Ethernet connections should use Cat5E or better shielded cable to connect to an Ethernet
hub, switch, or router. The maximum cable length should not exceed 328ft (100 m).

Tx

Rx

Tx

Rx

(A)

(B)

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Note

Unless dual Ethernet ports were specified at the time of order, the secondary Ethernet port
(Ethernet 2) will not be active.

3.4.3 RS-485

The Gateway may be ordered with an optional RS-485 (serial) connection (Figure 3-6). It is
referenced by the A and B Serial Modbus terminals. This connection is used to
communicate Modbus RTU on an RS-485 data bus.

Use 18 AWG single twisted shielded pair wiring to connect the Gateway to the RS-485 data
bus. The total bus length should not exceed 4000 ft. (1220 m). Connect the Tx + (positive,
transmit) wire to terminal A and the Rx - (negative, receive) wire to terminal B. The wiring
shield should be trimmed close and insulated from touching the Gateway enclosure or
other terminations. Only terminated at one end typically at the power supply end.

If the existing data bus uses a 4 wire Full Duplex configuration, see Figure 3-8 to convert to
a 2-wire Half Duplex configuration.

Figure 3-8: Convert from Full to Half Duplex

Emerson.com/Rosemount 25

ON

K40

1

2

3

E

F

G

C

B

D

A

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3.4.4 Terminating resistors

Three DIP switches are provided to enable various terminating resistors to the RS-485 data
bus. The switches are found inside the electronics housing near the top center of the main
circuit board (Figure 3-9).

Figure 3-9: RS-485 Resistor DIP Switches

A. Main circuit board
B. Radio
C. Electronics

D. DIP switches

E. 470Ω pull-down resistor

F. 120Ω terminating resistor
G. 470Ω pull-up resistor

Switches 1 and 3 are connected to pull-up and pull down resistors. Switch 1 is for the Tx +
(A) line and Switch 3 is for the Rx – (B) line. These 470 Ω resistors are used to prevent noise
from being interpreted as valid communications during periods when no actual
communications are occurring. Only one set of pull-up and pull-down resistors should be
active on the RS-485 data bus at time.

Switch 2 is connected to a 120 Ω terminating resistor. This resistor is used to dampen
signal reflections on long cable runs. RS-485 specifications indicate that the data bus
should be terminated at both ends (Figure 3-10). However termination should only be
used with high data rates (above 115 kbps) and long cable runs.

26 Emerson.com/Rosemount

Up to 4000 ft. (1220 m)

Device 1

A

B

Terminators required
only for high data
rates and long cable
runs

Device N
(up to 32
possible)

Device 2

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Figure 3-10: Typical Half Duplex (2-wire) Network

3.4.5 Power

The Gateway is designed to be powered by 24 VDC (nominal) and requires 250 mA of
current. The positive and negative connections are found on the left side of the terminal
block (Figure 3-6). An additional case ground is found on the left side of the junction box
enclosure.

3.4.6

Connect supply power to the positive + and negative – power terminals found on the left
side of the terminal block (Figure 3-6). Recommended torque is 7 in-lb and the gauge is 12
to 22 AWG. An additional internal case ground can be found on the left side of the
enclosure. The wiring should include an external power shut-off switch or circuit breaker
that is located near the Gateway.

Note

Using an uninterruptible power supply (UPS) is recommended to ensure availability should
there be a loss of power.

Note

When using PoE PD, a power supply is not required.

Power over Ethernet (PoE)

The new Gateway hardware supports IEEE 802.3af and IEEE 802.3at PoE.

With the growth of Ethernet, many have wanted to save time and cost on wiring by
sending power down to an Ethernet device over the same Ethernet cable used to haul
data. This is possible because there are four extra wires in an Ethernet cable that are
typically not used. In the past there was no formal standard, people came up with their
own wiring schemes for using these wires to provide power. This resulted in a number of
different schemes to exist and lead to confusion as people were damaging their
computers because they did not know there was power available over the Ethernet cable.

In 2003, IEEE 802.3af standard for PoE was adopted. It specified:

• The wires that would carry power and how

• Devices that could source power and devices that could be powered

• Supplied wattage would be up to 15 Watts (in 2009, IEEE 802.3at was adopted, which

Emerson.com/Rosemount 27

allowed power up to 25 Watts)

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• The voltage used

• A method of protecting against damaging non-PoE devices

There are two types of IEEE 802.3 PoE devices

1. PSE (Power Sourcing Equipment) is a device that acts as a voltage source and
supplies PoE to devices via the Ethernet cable.

2. PD (Powered Device) is a device that is supplied with power via PoE from a PSE
device via the Ethernet cable.

The Gateway can be configured by jumpers to work in either one of the modes referenced
above. Therefore the Gateway can source power or be powered via the Ethernet cable.

Note

The Gateway cannot be a PSE and a PD at the same time. PoE can only be configured on
one Gateway port at a time.

Reference Manual

PoE advantages

To save costs on planning, wiring and installation of networks, devices are supplied with
power directly via the Ethernet cable (e.g. via a Cat 5/5e cable up to 100m). PoE makes the
network planning flexible, independent of power supply cabinets, and junction boxes.
There are no extra costs for the electrical wiring. An advantage of PoE is that you can install
devices with an Ethernet interface in places of difficult access or in areas in which running
cable would be inconvenient. This in turn saves installation time and costs. This
technology is in use today typically in IP telephones, cameras, or wireless transmission
devices such as WLAN Access Points.

An excellent application is a Gateway connected to a Wi-Fi back haul unit; such as a Cisco
or ProSoft® unit. For example a Cisco unit could power the Gateway or in another case the
Gateway could power the ProSoft unit as in a PFN with the addition of an external power
supply.

®

Selecting devices to work with a PoE Gateway

The connecting device to the Gateway whether it is a PSE or a PD must be labeled as
compliant with IEEE 802.3af or IEEE 802.3at. Many companies use labels on their
packaging such as PoE for IEEE 802.3af or PoE+ for IEEE 802.3at. Check the specific
manufacturer's specifications of any device to make sure somewhere it references IEEE

802.3; otherwise it may not work.

The Gateway works as either a PoE PSE for IEEE 802.3af (sourcing 15 Watts) or PoE+ PSE for
IEEE 802.3at (sourcing 25 Watts) depending on the input voltage to the Gateway from the
power supply. For 12 VDC nominal input, the Gateway can source 15 Watts. For 24 VDC
nominal input, the Gateway can source up to 25 Watts. No additional adjustment is
necessary.

In the PoE PD mode, the Gateway draws its power over the selected Ethernet cable from
another PoE IEEE 802.3 device either 802.3af or 802.3at.

Caution is needed in selecting a companion device to the Gateway for PoE. Not all devices
labeled PoE will function. Before 2003, there was no standard and companies developed
their own techniques for powering over an Ethernet cable. These techniques are not
always interoperable. Before the standard, they used the term PoE on many of their

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products. Most new products labeled PoE are IEEE compatible. Cisco products can be
ordered with their old standard (Online Power as it is sometimes referred to) or with the
IEEE 802.3 PoE standard. Check with the appropriate manufacturer if in doubt before
purchasing/installing the connecting equipment.

For reference, Cisco offers the following four versions:

1. Prestandard PoE (Online Power)

2. 802.3af-compliant PoE (15W)

3. 802.3at-compliant PoE Plus (PoE+) (25W)

Universal PoE (UPoE) (60W). (New Cisco standard, which Cisco claims is compatible with
IEEE 802.3af PoE and IEEE 802.3at PoE +)

Note

When using a Gateway as IEEE 802.3 PSE device, check the total power levels of all the PD
equipment connected (including the Gateway itself 3.6 Watts) to make sure the power
supply to the gateway can source enough power. It is always a good design practice to
make sure the power supply has more than enough power capability to handle startup
loads and future expansion.

Installation

IEEE 802.3 PoE gives protection from damaging a computer or another piece of equipment

When using IEEE 802.3 PoE, one of the important new features of this standard is that PSE
devices have a test mechanism to protect connected incompatible devices from being
damaged. Only devices which have an authenticating characteristic based on the IEEE

802.3 standard, receive power via the Ethernet cable. To determine whether a PD is
connected, the input parameters are checked by the PSE. This method is called “Resistive
Power Discovery”. During the discovery process resistance, capacitance, and current are
checked.

If the PSE detects a PD it starts classification, i.e. determination of the power requirement
of the connected device. For this the PSE applies a small defined voltage to the power
input of the PD's and measures the resulting current. The PD is assigned to a power class
based on the value of the current. Only now the total voltage is supplied to the power
input.

This sophisticated system prevents computers and other devices from being damaged
when connected to these cables.

CAUTION

Older non-IEEE standard PoE offerings may not have this protection and could damage
computers and other devices.

Proper PoE installation considerations

In all electrical installations, local codes and prevailing regulations must be observed. Only
use properly trained/licensed installers, approved materials, have installations inspected
as required and if in doubt seek help from a qualified person. PoE+ and the load of the
Gateway (approximately 3 to 4 Watts) can add up to 30 Watts of power; because of this
the proper Ethernet cable must be selected depending on the length of the cable run.

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Check with the manufacturer for the specifications of the cable being used to determine
the power versus length requirements. Multiple powered Ethernet cables running in the
same location must be considered for total temperature rise. Most Ethernet cable
suppliers have charts for PoE usage on their websites.

Typically, Cat 5 should handle most installations with runs up to 100 meters
(approximately 300 feet). The use of Cat 3 is not recommended in any installation PoE or
non-PoE, Cat 3 may work for some lower power short run applications, but overall it has
poorer data handling and lower power capability. Cat 6 and Cat 7 are respectively better
than Cat 5.

Reference Manual

PoE FAQs

Does the old 1420 Gateway hardware have PoE?

No, not IEEE PoE; in the current 1420 Gateway there is a third Ethernet port on the far left
of the connector board (closest to the hinge). This port has a cover on it; in the manual it is
labeled “Ethernet 2 with Power.” This connector is connected to Ethernet port 2 and the
spare Ethernet wires in this connector are bridged to the input power lines to the Gateway.
This was designed for special applications and is not recommended for normal use. This
connector can damage computer and other equipment connected to it if used improperly
and has been removed as it is not needed in the new PoE design.

What do I have to do to order IEEE PoE on a 1420 Gateway?

There is no specific option code for PoE. In time, all 1420 Gateways will have PoE. Initially
PoE will be offered by approvals codes as PoE is approved for that application. For
example, typically N5 or N6 approvals take the least time. These approvals codes when
approved for PoE would automatically ship with the new hardware. Approval codes like N3
or N4, which typically take a longer time, would ship with PoE at a later date. Contact your
Emerson Sales Representative to find out if a particular code has been approved for PoE.

It should be also noted that all PoE units shipped are configured as a PoE PD on port 1. By
using the jumpers included with the unit, the installer configures the unit during
installation as to mode and port of PoE operation if desired. See the #unique_48/

unique_48_Connect_42_Rae17094 for jumpering diagrams.

If I am not using PoE, how should I program the Gateway?

Program the 1420 Gateway as a PoE PD on either port; then connect up the local power
supply (24 or 12 VDC) to the power input terminals of the Gateway. There is no problem if
the Gateway is programed as a PD and has local power too. The Gateway working as a PD
when it sees local power switches to the local power instead of the Ethernet PoE. See

#unique_48/unique_48_Connect_42_Rae17094 for jumpering diagrams.

What type of power supply should I use with the PoE Gateway in the PSE mode?

A Class 1 power supply is strongly recommended for all Gateway applications for improved
safety. The power supply should be a 24 or 12 VDC unit. 24 VDC allows more power to be
sourced in the PSE mode. The power supply should be able to handle at least 30 Watts if
using PSE; for good operating margin it would be advisable to consider at least a 50 Watt
supply.

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Note

Solar or battery power is not recommended for PoE PSE operation as there are additional
power loses caused by the PoE circuitry.

What is the maximum Voltage PoE PSE can source?

Maximum Voltage is normally 48 VDC; up to 25 Watts.

Can you do redundant power with PoE?

Yes, as PoE becomes more popular many network appliance (switch) providers are
supplying innovative switches and other hardware to create redundantly powered
networks. Typically, many switch suppliers offer switches that allow multiple power
inputs. Check your local switch supplier as to available configurations. Also, the Gateway
will work with a local power supply connected to the power input terminals of the
Gateway and as a PD with power coming over the Ethernet at the same time. If both
sources are present, the Gateway selects the local power supply first. If the local power
fails, the Gateway automatically switches to Ethernet power. When the local power is
restored, the Gateway automatically returns to local power.

How do I know if my 1420 Gateway has IEEE PoE capability?

The simplest way to check for IEEE PoE capability is to open the upper door on the 1420
Gateway and the see how the computer board is mounted. In the newer hardware, the
board is mounted horizontally. The old hardware the computer board was mounted
vertically.

Emerson.com/Rosemount 31

P D P DP S E

E T H 1 E T H 2 P S E

P S E

E N

D I S

A

B C

A

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Gateways shipped 2014 to present with N5/N6
option

Gateways shipped
2011 - 2014

A. Computer board
B. 1420 with PoE
C. 1420 without PoE

Are there other changes in the 1420 Gateway with the new hardware?

Emerson's Quality Policy is to continuously improve our products year after year. The
following is a list of some improvements with the new hardware:

• Ethernet connectors in line with conduit holes

• A fast disconnect circuit protects from someone inadvertently wiring Gateway to high

voltage or AC Mains (circuit resets when improper power is removed)

• More area freed up for installer wiring in lower section

• Total number of circuit boards, wires and connectors is greatly reduced

32 Emerson.com/Rosemount

P D P DP S E

E T H 1 E T H 2 P S E

P S E

E N

D I S

P D P DP S E

E T H 1 E T H 2 P S E

P S E

E N

D I S

P D P DP S E

E T H 1 E T H 2 P S E

P S E

E N

D I S

P D P DP S E

E T H 1 E T H 2 P S E

P S E

E N

D I S

PD PDPSE

ETH 1 ETH 2 PS E

PSE

EN

DIS

Computer

board

1420

with PoE

PoE PD on port 1
(Default jumpering for Production.
Used for no PoE also)

PoE PD on port 2

PoE PSE on port 1

PoE PSE on port 2

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Gateway PoE jumpering

Figure 3-11: Jumpering Matrix Located on Gateway Main Board

• ETH1: Ethernet port 1 selected for PD or PSE

• ETH2: Ethernet port 2 selected for PD or PSE

• PD: Gateway gets its power off the Ethernet port selected

• PSE: Gateway gets its power from a local power supply and sends power down the

Ethernet port selected to another device

• EN: Enabled; this enables the PSE operation

• DIS: Disabled; this disables the PSE operation

Note

Only one port and one mode of operation (PD or PSE) can be selected at a time. Any other
combination of jumpers is invalid.

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4 Commissioning

4.1 Overview

This section discusses the installation and setup of the optional software included with the
Emerson™ Wireless 1420 Gateway (Gateway). This software is not required for the wireless
field network to operate; however, it will aid in secure host integration as well as wireless
field device configuration. The following table describes what items are installed and on
which disk they can be found.

Table 4-1: Software Applications

Name Description Location

Security Setup Utility This utility allows the setup of SSL enabled

communications between the Gateway and host
system.

AMS Wireless Configurator This application allows complete configuration of

wireless field devices and provides added security
through drag and drop provisioning.

Network Configuration This application configures AMS Wireless Configurator

to interface to a Wireless Network or a HART® Modem.

Additional system components may be installed depending on the current configuration
of the system.

4.2 System requirements

Table 4-2: PC Hardware

Minimum requirements Recommended requirements

Intel™ Core 2 Duo, 2.0 GHz Intel Core 2 Quad, 2.0 GHz or greater

1 GB memory 3 GB memory or greater

1.5 GB free hard disk space 2 GB or more of free hard disk space

Table 4-3: Supported Operating Systems

Disk 1

Disk 2

Disk 2

Operating system Version

Windows™ XP Professional, Service Pack 3

Windows Server 2003 Standard, Service Pack 2

Windows Server 2003 R2 Standard, Service Pack 2

Windows Server 2008 Standard, Service Pack 2

Windows Server 2008 R2 Standard, Service Pack 1

Windows 7 Professional, Service Pack 1

Windows 7 Enterprise, Service Pack 1

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Note

Only 32-bit versions of the operating systems are supported for AMS Wireless
Configurator.

4.3 Software installation

The software can be found on the two disk pack, included with the Gateway. Depending
on the PC system configuration, installation may take 30–35 minutes. Installing both disks
in order is recommended. The Security Setup Utility is located on Disk 1.

4.3.1 Install the software

To install the software:

Procedure

1. Exit/close all Windows programs, including any running in the background, such as
virus scan software.

2. Insert Disk 1 into the CD/DVD drive of the PC.

3. Follow the prompts.

4.3.2

Install the AMS Wireless Configurator

AMS Wireless Configurator is located on Disk 2. To install the software:

Procedure

1. Exit/close all Windows programs, including any running in the background, such as
virus scan software.

2. Insert Disk 2 into the CD/DVD drive of the PC.

3. Select Install from the menu when the AMS Wireless Configurator setup begins.

4. Follow the prompts.

5. Allow AMS Wireless Configurator to reboot PC.

6. Do not remove the disk from the CD/DVD drive.

7. Installation will resume automatically after login.

8. Follow the prompts.

Note

If the autorun function is disabled on the PC, or installation does not begin
automatically, double click D:\SETUP.EXE (where D is the CD/DVD drive on the PC)
and select OK.

4.4 Security Setup Utility

The Gateway provides significant flexibility by offering many different interface options.
Users should be aware that with this flexibility comes certain risks. Opening the non­secure versions of an industrial protocol can expose significant information, some of it

36 Emerson.com/Rosemount

Security Setup Utility

A

B

C

H I J

D

E

F G

K

L

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sensitive, about the wireless network. For this reason, Emerson encourages end users to
use Emerson’s Security Setup Utility to secure the industrial protocols. Users running non­secure versions of the industrial protocols are encouraged to make sure the Gateway is
running on a secure network and following security best practices.

The Security Setup Utility enables secure communications between the Gateway and host
system, asset management software, data historians, or other applications. This is done by
encrypting the standard data protocols (AMS Wireless Configurator, Modbus TCP,
Ethernet/IP™, and OPC) used by the Gateway and making them available through various
proxies within the Security Setup Utility. These proxies can function as a data server for
other applications on the control network. The Security Setup Utility can support multiple
Gateways at once and each proxy can support multiple client application connects. Figure

4-1 shows a typical system architecture using the Security Setup Utility.

Figure 4-1: Typical Host System Architecture Using Security Setup

Emerson.com/Rosemount 37

A. AMS proxy
B. Modbus proxy

C. OPC proxy
D. Data server
E. Engineering station
F. Asset management

G. Historian
H. Gateway A

I. Gateway B
J. Gateway C
K. Control network
L. Encrypted data

Note

OPC communications requires the use of the Security Setup Utility regardless of whether
encryption is required.

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4.4.1 Setup security settings

In the Security Setup Utility add a new proxy for each Gateway based on the
communication protocol that is being used. For example, add an OPC proxy for each
Gateway that is communicating OPC. Use the following procedure to add a new proxy in
the Security Setup Utility:

Procedure

1. Open the Security Setup Utility.

2. Select EDIT → NEW, then select the type of new proxy to be added.

3. Right click on the new proxy entry and select Properties.

4. Enter the target Gateway’s Hostname and IP Address.

5. Select OK.

6. Select FILE → SAVE.

7. When prompted for authentication, enter the admin password for the target
Gateway.

8. Select OK.

9. Repeat Step 2 - Step 8 to added additional proxies.

10. Select FILE → EXIT to close the Security Setup Utility.

During this process, the Gateway will exchange security certificates (digital
signatures) with the proxy.

Figure 4-2: Security Setup Utility

4.5 AMS Wireless Configurator

AMS Wireless Configurator helps deploy and configure wireless field devices. It provides an
integrated operating environment that leverages the full capabilities of WirelessHART®,
including embedded data trending, charting, and graphical display capabilities provided
by enhanced EDDL technology.

• Display and modify device configuration

• View device diagnostics

• View process variables

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• Provision a wireless device using the drag-and-drop operation so it can join a Gateway’s

self-organizing network

• Enhance AMS Wireless Configurator functionality with the AMS Wireless SNAP-ON

Application

• Restrict access to AMS Wireless Configurator functions through the use of security

permissions

See the release notes for information specific to the current release of AMS Wireless
Configurator. To display the release notes, select START → ALL PROGRAMS → AMS
WIRELESS → CONFIGURATOR → HELP.

™

4.5.1 Setup the AMS Wireless Configurator

AMS Wireless Configurator supports connectivity to a Wireless Network and a HART
Modem. Both of these interfaces must be configured through the Network Configuration
application. To run this application, select START → ALL PROGRAMS → DEVICE MANAGER
→ NETWORK CONFIGURATION.

Note

Do not have the Security Setup Utility running at the same time as the Network
Configuration application or a configuration error might occur.

Use the following procedure to configure a wireless network for AMS Wireless
Configurator:

Procedure

1. Open the Network Configuration application.

2. Select Add.

3. Select Wireless Network and select Install.

4. Select Next.

5. Enter a name for the wireless network and select Next.

6. Enter the HostName or IP Address for the Gateway and select Add.

7. Repeat Step 6 if multiple Gateways need to be added.

8. Check the box to Enable Secure Communications with the Gateway.

9. Select Finish to close the configuration window.

10. Select Close to exit the Network Configuration application.

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Figure 4-3: Wireless Network in the Network Configuration

4.5.2 Setup a HART modem for AMS Wireless Configurator

Use the following procedure to configure a HART modem for AMS Wireless Configurator:

Procedure

1. Open the Network Configuration application.

2. Select Add…

3. Select HART modem and select Install…

4. Select Next.

5. Enter a name for the HART modem and select Next.

6. Select the HART master type (default is AMS Wireless Configurator will be Primary
HART master) and select Next.

7. Select the COM port for the HART modem and select Next.

8. Check the box to Check to support Multi Drop devices.

9. Check the box to Include WirelessHART Adapter.

10. Select Finish to close the configuration window.

11. Select Close to exit the Network Configuration application.

4.6

Licensing and credits

The latest licensing agreements are included on each disk of the software pack.

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“This product includes software developed by the OpenSSL Project for use in the OpenSSL
Toolkit (www.openssl.org)”

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Reference Manual Operation and Maintenance

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5 Operation and Maintenance

5.1 Overview

This section describes how to connect the Emerson™ Wireless 1420 Gateway (Gateway) to
a host system and integrate data gathered from the field device network. It covers
network architectures, security, and data mapping.

In accordance with WirelessHART® security guidelines, the Gateway should be connected
to the host system via a LAN (Local Area Network) and not a WAN (Wide Area Network).

5.2 Network architecture

Physical connection types are important when determining the network architecture and
what protocols can be used for integration. Ethernet is the primary physical connection
type and RS-485 is available as an optional connection type. The following network
architecture diagrams will help when integrating data from the Gateway into the host
system.

5.2.1

Ethernet

An Ethernet connection supports Modbus® TCP, OPC, AMS Wireless Configurator,
Ethernet/IP™, and HART® TCP protocols. Using this connection type, the Gateway is wired
directly to a control network (see Figure 5-1) using a network switch, router, or hub. There
are often two networks for redundancy purposes.

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B

C

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Figure 5-1: Ethernet LAN Architecture

A. Engineering station
B. Primary control network
C. Secondary control network

D. Controller and I/O

E. Gateway

Fiber optic (optional)

A Fiber optic connection supports Modbus TCP, OPC, AMSWireless Configurator, and
HART TCP protocols. Using this connection type, the Gateway is wired to a fiber optic
switch (see Figure 5-2).

Note

A fiber optic connection requires a third party copper Ethernet to fiber optic Ethernet
converter.

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A

B C

D

F

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Figure 5-2: Fiber Optic LAN Architecture

A. Engineering station
B. Primary control network
C. Secondary control network

D. Controller and I/O

E. Fiber optic switch

F. Fiber optic
G. Copper to fiber converter
H. Gateway

RS-485 (serial)

An RS-485 connection supports Modbus RTU protocol. Using this connection type, the
Gateway is wired to an RS-485 bus which typically leads to a serial I/O card or Modbus I/O
card (see Figure 5-3). Up to 31 Gateways can be connected to a single I/O card in this
manner.

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A

B

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D

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Figure 5-3: RS-485 LAN Architecture

A. Engineering station
B. Primary control network
C. Secondary control network

D. Controller and I/O

E. Serial I/O card

F. RS485 bus
G. Gateway

5.3 Internal firewall

The Gateway supports an internal firewall that inspects both incoming and outgoing data
packets. TCP ports for communication protocols are user configurable, including user
specified port numbers and the ability to disable ports.

The Gateway’s internal firewall settings can be found by navigating to System Settings →
Protocols → Protocols and Ports.

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Figure 5-4: Security Protocols Page (Internal Firewall)

5.4 Modbus

The Gateway supports both Modbus RTU over the RS-485 serial port and Modbus TCP over
Ethernet. It functions as a sub device on the Modbus network and must be polled by a
Modbus master or client (host system).

5.4.1

Communication settings

It is import that the Modbus communication settings in the Gateway match the setting in
the Modbus master or client. Refer to host system documentation for more information
on how to configure these settings. The Modbus communication settings can be found by
navigating to System Settings → Protocols → Modbus.

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Figure 5-5: Modbus Communications Page

One Modbus Address: When this option is selected, this address is used by the Gateway for
Modbus RTU communications.

Multiple Modbus Addresses: When this option is selected, a new column for address will
appear on the Modbus mapping page.

Modbus TCP Port: This is the TCP/IP port the Gateway uses for Modbus TCP (Ethernet). To
change TCP/IP port settings, see the Internal Firewall section for more details.

Baud Rate: The data rate or speed of serial communications. This setting is only required
for Modbus RTU.

Parity: This setting determines parity (none, even, or odd) to use for error checking
purposes. This setting is only required for Modbus RTU.

Stop Bits: This setting determines the number (1 or 2) of stop bits to use when ending a
message. This setting is only required for Modbus RTU.

Response delay time (ms): This setting determines how long (ms) the Gateway waits
before responding to a Modbus request. This setting is only required for Modbus RTU.

Unmapped register read response?: This is the value returned by the Gateway if the
Modbus master requests a register with no data assigned to it (empty register). It is
recommended this be set to zero fill to prevent errors.

Floating point representation: This setting determines if the Gateway uses floating point
values or integer values. There are three options for this setting.

• Float uses 32 bit floating point values.

• Round rounds the data value to the nearest whole number.

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• Scaled uses scaled integers to offset negative values or increase decimal point

resolution. The equation for scaled integers is:

y = Ax - (B - 32768)

Where:

y = Scaled integer returned by the Gateway

A = Gain for scaled integer value

x = Measured value from wireless field device

B = Offset for scaled integer value

Use swapped floating point format?: This setting switches which register is sent first for a
floating point value. This setting is only used for floating point values.

Incorporate value’s associated status as error?: This setting will cause the Gateway to
report a predetermined value when a communications or critical diagnostic error is
received from the wireless field device. The value is user configurable depending on which
floating point representation is chosen. See Value reported for error below.

Value reported for error (floating point): This setting determines what value is reported if
the wireless field device reports a failure or stops communicating to the Gateway. This
setting is used for floating point values. The choices are NaN (not a number), +Inf (positive
infinity), -Inf (negative infinity), or Other (user specified).

5.4.2

Value reported for error (rounded and native integer): This setting determines what value
is reported if the wireless field device reports a failure or stops communicating to the
Gateway. This setting is used for rounded or scaled integers. The choice is a user specified
value between -32768 and 65535.

Scaled floating point maximum integer value: This determines the maximum integer value
for the purpose scaling integers. 999-65534

Use global scale gain and offset?: This setting determines if a global gain and offset is
applied for scaled integers or if each value has a unique gain and offset. Unique gain and
offsets are found on the Modbus Mapping page.

Global scale gain: This value is multiplied to the data values for the purpose of scaling
integers. If global scaling is not selected, a gain value will be available for each separate
data value on the Modbus Mapping page.

Global scale offset: This value is added to the data values for the purpose of scaling
integers. If global scaling is not selected, an offset value will be available for each separate
data value on the Modbus Mapping page.

Register mapping

Register Mapping is the process of assigning data points from wireless field devices to
Modbus registers. These registers can then be read by a Modbus master or client. Modbus
register mapping can be found by navigating to System Settings → Protocols → Modbus.

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Figure 5-6: Modbus Register Map Page

To add a new data point to the Modbus register map:

Procedure

1. Select Add New entry.

2. Complete all of the table entries for the new data point (note that the entry
columns may vary based on the Modbus communications settings).

3. Repeat for each new data point.

4. Select Submit.

Example

Address: This is the Modbus RTU address used by the Gateway for this data point. It is
possible to group data points assigning them the same address (i.e. all data points from
the same process unit can have the same address). This column only appears if Multiple
Modbus Addresses is selected on the Modbus Communications page.

Register: This is the Modbus register number used for this data value. Modbus registers
hold two bytes (16 bits) of information; therefore 32 bit floats and integers require two
Modbus registers. Each data point needs a unique Modbus register number, unless they
are assigned different addresses. Register numbers 0-19999 are reserved for Boolean (bit,
coil, binary, etc…) values. Register numbers 20000+ are reserved for floating point or
integer values.

Point Name: This is a two part name for the data point. The first part is the HART Tag of the
wireless field device which is producing the data. The second part is the parameter of the
wireless field device.

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Note

Point Name is entered as <HART Tag.PARAMETER>. Point Name can be entered using the
list of values (…) or manually entered. The following table gives a list of standard device
parameters which may be considered for Modbus register mapping.

Table 5-1: Device Parameters Available

Parameter Description Data type

PV Primary Variable 32-bit float

SV Secondary Variable 32-bit float

TV Tertiary Variable 32-bit float

QV Quaternary Variable 32-bit float

RELIABILITY A measure of connectivity to the Gateway 32-bit float

ONLINE Wireless communications status Boolean

PV_HEALTHY Health status for PV Boolean

SV_HEALTHY Health status for SV Boolean

TV_HEALTHY Health status for TV Boolean

QV_HEALTHY Health status for QV Boolean

PV, SV, TV, and QV (dynamic variables) will vary by device type. Refer to the device’s
documentation for more information on what value is represented by each dynamic
variable.

RELIABILITY and ONLINE relate to wireless communications. RELIABILITY is the percentage
of messages received from the wireless field device. ONLINE is a true/false indication of
whether the device is communicating on the wireless network.

**_HEALTHY parameters are a true/false indication of the health of a particular variable
(** = dynamic variable – PV, SV, etc…). These parameters incorporate critical diagnostics
from the wireless field device as well as communication status.

Note

The **_HEALTHY parameters are a great indication of the health and communications
status of the data values.

State (state value): The value of a data point which drives a Modbus output of 1. For
example, if a data point is reported as either True or False, a state value of True will report a
1 for True and 0 for False. A state of False will report a 0 for True and a 1 for False. State is
only required for register numbers 0-19999 (Boolean, bit, coil, binary, etc…).

Invert: This check box will invert the Modbus output from a 1 to a 0 or a 0 to a 1. Invert is
only used for Boolean values using register numbers 0-19999.

Gain: This value is multiplied to the data value for the purpose of scaling integers. Gain is
only required if scaled is chosen on the Modbus communications page and globe gain and
offset is not chosen.

Offset: This value is added to the data value for the purpose of scaling integers. Offset is
only required if scaled is chosen on the Modbus communications page and globe gain and
offset is not chosen.

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Predefined Modbus registers

In addition to user configurable parameters, the Gateway also supports a list of predefined
Modbus registers with diagnostics and test parameters. The following table is a list of the
predefined Modbus registers.

Table 5-2: Predefined Modbus Registers

Description Register Data type

Current Year (1) 49001 32-bit int

Current Month (1) 49002 32-bit int

Current Day (1) 49003 32-bit int

Current Hour (1) 49004 32-bit int

Current Minute (1) 49005 32-bit int

Current Second (1) 49006 32-bit int

Messages Received 49007 32-bit int

Corrupt Messages Received 49008 32-bit int

Messages Sent With Exception 49009 32-bit int

Messages Sent Count 49010 32-bit int

Valid Messages Ignored 49011 32-bit int

Constant Float 12345.0 49012 32 float

SYSTEM_DIAG.HART_DEVICES 49014 32-bit int

SYSTEM_DIAG.ADDITIONAL_STATUS_0 49015 8-bit unsigned int

SYSTEM_DIAG.ADDITIONAL_STATUS_1 49016 8-bit unsigned int

SYSTEM_DIAG.ADDITIONAL_STATUS_2 49017 8-bit unsigned int

SYSTEM_DIAG.ADDITIONAL_STATUS_3 49018 8-bit unsigned int

SYSTEM_DIAG.ADDITIONAL_STATUS_4 49019 8-bit unsigned int

SYSTEM_DIAG.ADDITIONAL_STATUS_5 49020 8-bit unsigned int

SYSTEM_DIAG.ADDITIONAL_STATUS_6 49021 8-bit unsigned int

SYSTEM_DIAG.ADDITIONAL_STATUS_7 49022 8-bit unsigned int

SYSTEM_DIAG.ADDITIONAL_STATUS_8 49023 8-bit unsigned int

SYSTEM_DIAG.ADDITIONAL_STATUS_9 49024 8-bit unsigned int

SYSTEM_DIAG.ADDITIONAL_STATUS_10 49025 8-bit unsigned int

SYSTEM_DIAG.ADDITIONAL_STATUS_11 49026 8-bit unsigned int

SYSTEM_DIAG.ADDITIONAL_STATUS_12 49027 8-bit unsigned int

SYSTEM_DIAG.UNREACHABLE 49028 32-bit int

SYSTEM_DIAG.UPTIME 49029 32-bit int

SYSTEM_DIAG.TEST_BOOLEAN 49031 Boolean

SYSTEM_DIAG.TEST_BYTE 49032 8-bit int

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Table 5-2: Predefined Modbus Registers (continued)

Description Register Data type

SYSTEM_DIAG.TEST_UNSIGNED_BYTE 49033 8-bit unsigned int

SYSTEM_DIAG.TEST_SHORT 49034 16-bit int

SYSTEM_DIAG.TEST_UNSIGNED_SHORT 49035 16-bit unsigned int

SYSTEM_DIAG.TEST_INT 49036 32-bit int

SYSTEM_DIAG.TEST_UNSIGNED_INT 49038 32-bit unsigned int

SYSTEM_DIAG.TEST_FLOAT 49040 32-bit float

5.5 EtherNet/IP

5.5.1 EtherNet/IP Communication settings

It is important that the Ethernet/IP communication settings in the Gateway match the
setting in the Ethernet/IP master or client. Refer to host system documentation for more
information on how to configure these settings or to the Emerson Wireless Gateway
Integration Reference Manual for Ethernet/IP. The Ethernet/IP communication settings
can be found by navigating to System Settings → Protocols → EtherNet/IP. Network
architectures should reflect that of a DeltaV™system see #unique_72/

unique_72_Connect_42_Ram24704.

Note

Ethernet/IP can be integrated with any approved Ethernet/IP ODVA member. Other
protocols such as HARTIP are still functional within the Gateway. See the Emerson Wireless
Gateway Product Data Sheet for ordering options.

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Figure 5-7: Ethernet/IP Communications Page

Table 5-3: System Settings>Protocols>EtherNet/IP

Terms Description

Assembly Object
Type

Ethernet/IP TCP
Port

Ethernet/IP UDP
Ports

Incorporate
value’s associated
status as error?

Value reported for
error (floating
point)

NaN Not a number is reported if the value’s associated status indicates a critical

+Inf Positive infinity is reported if the value’s associated status indicates a critical

-Inf Negative infinity is reported if the value’s associated status indicates a critical

Other User defined value is reported if the value’s associated status indicates a

Ethernet/IP use Static assembly object.

The TCP Port used to access Ethernet/IP TCP data directly from the Gateway.

The UDP Ports used to access Ethernet/IP UDP data directly from the Gateway.

If the HART variable status indicates a critical failure or if there is a loss of
communications, it will be reported through the Ethernet/IP member.

Chooses what value is reported if the value’s associated status indicates a
critical failure. Only used if the Gateway is using float representation

failure.

failure.

failure.

critical failure.

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Table 5-3: System Settings>Protocols>EtherNet/IP (continued)

Terms Description

Value reported for
error (native
integer)

User defined value is reported if the value’s associated status indicates a
critical failure. Only used if the Gateway is using integer representation.

Unmapped parameter read response?: This is the value returned by the Gateway if the
Ethernet/IP master requests a register with no data assigned to it (empty register). It is
recommended this be set to zero fill to prevent errors.

5.5.2 Parameter mapping

Register Mapping is the process of assigning data points from wireless field devices to
Ethernet/IP registers. These registers can then be read by a Ethernet/IP master or client.
Ethernet/IP register mapping can be found by navigating to System Settings → Protocols
→ EtherNet/IP → EtherNet/IP Member Map.

Figure 5-8: Ethernet/IP Register Map Page

Table 5-4: Summary of Terms Used for the Ethernet/IP Mapping Page

Terms Description

Input Instance Ethernet/IP Input Static Assembly Instance - 496 bytes

Output
Instance

Member Ethernet/IP Instance Member in which data will get produced or consumed

Point Name Assigned data point in the format HARTtag.parameter

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Table 5-4: Summary of Terms Used for the Ethernet/IP Mapping Page (continued)

Terms Description

New entry Creates a new entry in this table

<<First Navigates to the first page of this table

<<Previous Navigates to the previous page of this table

Search Finds the next occurrence of the characters entered into this field

Next>> Navigates to the next page of this table

Last>> Navigates to the last page of this table

Delete
Selected

Select All Selects all table entries

Select None De-selects all table entries

Select Errors Selects all table entries that have an error message

Submit Accepts all changes (highlighted in yellow)

Removes the selected entry from this table

Add a new data point

To add a new data point to the Ethernet/IP register map:

Procedure

1. Select New entry.

2. Complete all of the table entries for the new data point (note that the entry
columns may vary based on the Ethernet/IP communications settings).

3. Repeat for each new data point.

4. Select Submit.

5. When changes have been accepted, select Return to form.

See Table 5-1 for options of parameters that can be mapped.

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6 Troubleshooting

6.1 Service support

Note

For more information see the Emerson Wireless Gateway User Interface Terminology

Guide.

This section provides basic troubleshooting tips for the Emerson Wireless Field Network.
To receive technical support by phone:

Global Service Center Software and Integration Support

United States 1-800-833-8314 International [phone]

Customer Central Technical Support, quoting, and order related questions

United States 1-800-999-9307 (7:00 a.m. to 7:00 p.m. CST) Asia Pacific 65-6777-8211
Europe/ Middle East/Africa 49-8153-9390

Or email the wireless specialists at: [e-mail]

North American Response Center

Equipment service needs

1-800-654-7768 (24 hours—includes Canada)

Outside of the United States, contact your local Emerson representative.

6.2 Troubleshooting Tables

Table 6-1: Troubleshooting Initial Connection

Issue Troubleshooting steps

Web browser
returns page not
found

1. Connect the Gateway and PC/laptop.

2. Verify the Gateway is properly powered, 24 VDC (nominal) and 250 mA.
Open the upper cover and verify if any indicator lights are on.

3. Verify which Ethernet port is being used on the Gateway.

4. Verify the IP address for the Gateway (default primary port is

192.168.1.10, default secondary port is 192.168.2.10 or for DeltaV Ready
Gateway’s default primary port is 10.5.255.254, default secondary port is

10.9.255.254).

5. Verify the IP address of the PC/laptop is in the same subnet range as the
Gateway (i.e. If the Gateway IP is 155.177.0.xxx, then the PC/Lap IP
address should be 155.177.0.yyy).

6. Disable internet browser proxy settings.

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Table 6-1: Troubleshooting Initial Connection (continued)

Issue Troubleshooting steps

Can not find
Gateway after
changing IP
address

Can not find
Gateway using
Secondary
Ethernet Port

Can not log into
the Gateway

1. Verify the IP address of the PC/laptop is in the same subnet range as the
Gateway (i.e. If the Gateway IP is 155.177.0.xxx, then the PC/Lap IP
address should be 155.177.0.yyy).

1. Verify which Ethernet port is being used on the Gateway.

2. Verify the IP address for the Gateway (default primary port is

192.168.1.10, default secondary port is 192.168.2.10).

3. Verify the IP address of the PC/laptop is in the same subnet range as the
Gateway (i.e. If the Gateway IP is 155.177.0.xxx, then the PC/Lap IP
address should be 155.177.0.yyy).

1. Verify the user name and password. The administrator user name is
admin and the default password is default. See Table 2-1.

Table 6-2: Troubleshooting AMS Wireless Configurator

Issue Troubleshooting steps

Gateway does not
appear in AMS
Wireless
Configurator

1. Verify the Security Setup Utility is installed on the same PC as AMS
Wireless Configurator.

2. Setup a wireless network interface using the Network Configuration
application. See Section 4: Commissioning.

3. Verify if the wireless network interface is configured for Secure Gateway
Communications.

Wireless devices
do not appear
under the
Gateway

Wireless device
appears with red
HART® symbol

Device
configuration
items are grayed
out

4. Verify secure/unsecure AMS Wireless Configurator protocol settings in
the Gateway. Log on to the Gateway and navigate to SETUP > SECURITY >
PROTOCOLS.

5. Restart AMS Wireless Configurator data server. Right click on AMS
Wireless Configurator server icon in the Windows system tray (lower right
corner) and select stop server.

1. Verify wireless devices are connected to the Gateway. Log on to the
Gateway and navigate to EXPLORER.

2. Right click on wireless network and select rebuild hierarchy.

1. Install latest device support files from AMS Wireless Configurator. Go to

Emerson.com/Automation/AMS.

1. Verify whether current or historical information is being displayed. This
setting is displayed at the bottom of each device configuration screen.
Configuration requires the Current setting.

2. For security purposes a configuration timeout is applied to sessions that
have been idle for more than 30 minutes. Log back into AMS Wireless
Configurator.

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Table 6-3: Troubleshooting Wireless Field Devices

Issue Troubleshooting steps

Wireless device
does not appear
on the network

Wireless device
appears in the join
failure list

Wireless device
appears with
service denied

1. Verify the device has power.

2. Verify the device is within effect communications range.

3. Verify the proper Network ID has been entered into the device.

1. Re-enter the Network ID and Join Key into the device.

1. Verify the total number of devices on the network (100 max).

2. Go to SETUP → NETWORK → BANDWIDTH and click analyze bandwidth.
(Note: any changes will require the network to reform)

3. Reduce the update rate for the device.

Table 6-4: Troubleshooting Modbus Communications

Issue Troubleshooting steps

Can not communicate
using Modbus RTU

1. Verify the use of RS-485.

2. Verify wiring connections. See Section 3: Installation.

3. Verify if termination is required.

4. Verify that Modbus serial communications setting in the Gateway
match the Modbus Host settings. Log on to the Gateway and
navigate to SETUP → MODBUS → COMMUNICATIONS.

Can not communicate
using Modbus TCP

5. Verify the Modbus address for the Gateway.

6. Verify Modbus register mapping in the Gateway. Log on to the
Gateway and navigate to SETUP → MODBUS → MAPPING.

1. Verify secure / unsecure Modbus protocol settings in the Gateway.
Log on to the Gateway and navigate to SETUP → SECURITY →
PROTOCOLS.

2. Verify the Modbus TCP communications settings in the Gateway.
Log on to the Gateway and navigate to SETUP → MODBUS →
COMMUNICATIONS.

3. Verify Modbus register mapping in the Gateway. Log on to the
Gateway and navigate to SETUP → MODBUS → MAPPING.

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Table 6-4: Troubleshooting Modbus Communications (continued)

Issue Troubleshooting steps

Can not communicate
using secure Modbus
TCP

1. Verify the Security Setup Utility has been installed.

2. Configure a Secure Modbus Proxy for the Gateway. See Section 4:

Commissioning.

3. Verify secure/unsecure Modbus protocol settings in the Gateway.
Log on to the Gateway and navigate to SETUP → SECURITY →
PROTOCOLS.

4. Verify the Modbus TCP communications settings in the Gateway.
Log on to the Gateway and navigate to SETUP → MODBUS →
COMMUNICATIONS.

5. Verify Modbus register mapping in the Gateway. Log on to the
Gateway and navigate to SETUP → MODBUS → MAPPING.

Table 6-5: Troubleshooting OPC Communications

Issue Troubleshooting steps

OPC application can not find a
Gateway OPC server

Gateway OPC server does not
show any Gateways

1. Verify the Security Setup Utility has been installed on the
same PC as the OPC application.

2. Configure an OPC proxy for the Gateway. See Section 4:

Commissioning.

1. Configure an OPC proxy for the Gateway. See Section 4:

Commissioning.

Gateway OPC server does not
show any data tags

1. Configure the Gateway OPC Browse Tree. Log on to the
Gateway and navigate to SETUP → OPC → OPC BROWSE
TREE.

2. Verify the connection status for the OPC proxy in the
Security Setup Utility.

3. Verify if the OPC proxy is configured for secure or unsecure
communications.

4. Verify secure/unsecure OPC protocol settings in the
Gateway. Log on to the Gateway and navigate to SETUP →
SECURITY → PROTOCOLS.

5. Verify network firewall and port settings.

Table 6-6: Troubleshooting EtherNet/IP

Issue Troubleshooting steps

The Gateway is not publishing
the parameters

1. Verify connection is established with Ethernet/IP. Navigate
to SETUP → SECURITY → PROTOCOLS.

2. Reference Emerson Wireless Gateway to Allen-Bradley

Integration Manual.

®

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6.3 Return of materials

To expedite the return process outside of North America, contact your Emerson
representative.

Within the United States, call the Emerson Response Center toll-free number
1-800-654-7768. The center, which is available 24 hours a day, will assist you with any
needed information or materials.

The center will ask for product model and serial numbers, and will provide a Return
Material Authorization (RMA) number. The center will also ask for the process material to
which the product was last exposed.

WARNING

Individuals who handle products exposed to a hazardous substance can avoid injury if they
are informed of, and understand, the hazard. If the product being returned was exposed to
a hazardous substance as defined by OSHA, a copy of the required Material Safety Data
Sheet (MSDS) for each hazardous substance identified must be included with the returned
goods.

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7 Glossary

This glossary defines terms used throughout this manual or that appear in the web
interface of the Emerson™ Wireless 1420 Gateway (Gateway).

Term Definition

Access Control List A list of all devices that are approved to join the network. Each device will

also have a unique join key. Also referred to as a white list.

Active Advertising An operational state of the network manager that causes the entire

wireless field network to send messages looking for new or unreachable
devices to join the network.

Baud Rate Communication speed for Modbus® RTU.

Burst Rate The interval in which a wireless field device transmits measurement and

status data to the Gateway. Same as Update Rate.

Certificate A digital signature used to authenticate a client/server while using

encrypted communications.

Connectivity Typically refers to a combination of communication statistics and link

reliability of a wireless field device. May also refer to the connection
between the Gateway and the Host System.

Device ID A hexidecimal number that provides unique device identification.

DHCP Dynamic Host Configuration Protocol: Used to automatically configure

the TCP/IP parameters of a device.

Domain A unique designator on the internet comprised of symbols separated by

dots such as: this.domain.com.

Gateway Refers to the Smart Wireless Gateway.

HART Tag The device’s electronic tag that the Gateway uses for all host integration

mapping. Refers to the HART® long tag (32 characters, used for HART 6 or
7 devices) or the HART message (32 characters, only used for HART 5
wired devices connected via a WirelessHART® adapter).

Host Name A unique designator in a domain associated with the IP address of a

device such as: device.this.domain.com. In that example the hostname is
device.

HTML Hyper Text Markup Language: The file format used to define pages

viewed with a web browser.

HTTP Hyper Text Transfer Protocol: The protocol that defines how a web server

sends and receives data to and from a web browser.

HTTPS HTTP over an encrypted Secure Sockets Layer (SSL).

Join Failure When a wireless field device fails to join the WirelessHART network. Most

join failures are due to security reasons (missing or incorrect join key, not
on access control list, etc.).

Join Key Hexadecimal security code that allows wireless field devices to join the

wireless field network. This code must be identical in the device and the
Gateway.

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Term Definition

Latency The time from when a message leaves a wireless field device until it

reaches the Gateway.

Netmask A string of 1's and 0's that mask out or hide the network portion of an IP

address leaving only the host component.

Network I.D. Numeric code that associates wireless field devices to the Gateway. This

code must be identical in the device and the Gateway.

Network Manager Operational function within the Gateway that automatically handles all

device connections and scheduling of wireless data.

NTP Network Time Protocol. Used to keep the system time synchronized with

a network time server.

Path A wireless connection between two devices in a wireless network. Also

referred to as a hop.

Path Stability A measure of connectivity between two devices in the wireless network.

Calculated as the ratio of the number of received messages over the
number of expected messages.

Primary Interface Ethernet 1 or Fiber Optic port that is used for primary host

communications.

Private Network/LAN A local connection between a Gateway and a PC/laptop. This network is

used for commissioning and configuration of the Gateway.

Reliability A measure of connectivity between the Gateway and a wireless field

device. Calculated as the ratio of the number of received messages over
the number of expected messages. Takes into account all paths.

RSSI Received signal strength indication (dBm) for the wireless field device.

Secondary Interface Ethernet 2 port used for backup connection or a maintenance port for

local access.

Security Setup Utility A software application that enables secure communications between the

Gateway and host system, asset management software, data historians,
or other applications.

Self-Organizing
Network

Service Denied The device has been denied bandwidth and can not publish its regular

TCP/IP Transmission Control Protocol/Internet Protocol. The protocol that

Update Rate The interval in which a wireless field device transmits measurement and

Mesh network technology in which a network manager automatically
handles all device connections and scheduling of wireless data.

updates.

specifies how data is transmitted over Ethernet.

status data to the Gateway. Same as Burst Rate.

Wireless Field
Device(s)

Wireless Field Network WirelessHART network, consisting of Gateway and multiple wireless field

Wireless Plant Network Industrial Wi-Fi network, used to integrate the Wireless Field Network

64 Emerson.com/Rosemount

WirelessHART field devices that are a part of the wireless field network.

devices.

into the control network.

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A Specifications and Reference Data

A.1 Functional specifications

A.1.1 Input power

10.5–30 VDC (must be a Class 2 power supply)

A.1.2 Power over Ethernet

Note

The current consumption is for Gateway operation only. If using PSE, calculations will need
to be made to include the device being powered.

Input voltage

A.1.3

Normal Operation (no PSE or IEEE 802.3af): 10.5–30 VDC

PoE + PSE Operation (IEEE 802.3at): 17.5–30 VDC

Current draw

Operating current draw is based on 3.6 Watts power consumption.

A. Current (mA)
B. Voltage (VDC)

Momentary startup current draw up to twice operating current draw.

A.1.4

Emerson.com/Rosemount 65

Radio frequency power output from antenna

Maximum of 10 mW (10 dBm) EIRP

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Maximum of 40 mW (16 dBm) EIRP for WN2 High Gain option

A.1.5 Environmental

Operating temperature range

–40 to 158 °F (–40 to 70 °C)

Operating humidity range

10–90 percent relative humidity

A.1.6 EMC performance

Meets all industrial environment requirements of EN61326 and NAMUR NE-21. Maximum
deviation <1% span during EMC disturbance.

Note

During surge event, device may exceed maximum EMC deviation limit or reset; however,
device will self-recover and return to normal operation within specified start-up time.

A.1.7

Antenna options

Integrated Omni-directional Antenna Optional remote mount Omni-directional Antenna

A.2 Physical specifications

A.2.1 Weight

10 lb. (4.54 kg)

A.2.2

Material of construction

Housing

Low-copper aluminum, NEMA® 4X

Paint

Polyurethane

Cover gasket

Silicone Rubber

Antenna

Integrated Antenna: PBT/PC

Remote Antenna: Fiber Glass

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Certifications

Class I Division 2 (U.S.)

Equivalent Worldwide

A.3 Communication specifications

A.3.1 Isolated RS485

2-wire communication link for Modbus® RTU multidrop connections

Baud rate: 57600, 38400, 19200, or 9600

Protocol: Modbus RTU

Wiring: Single twisted shielded pair, 18 AWG. Wiring distance is approximately 4000 ft
(1,524 m)

A.3.2

A.3.3

Ethernet

10/100base-TX Ethernet communication port

Protocols: Modbus TCP, OPC, EtherNet/IP™, HART-IP™, https (for Web Interface)

Wiring: Cat5E shielded cable

Wiring distance: 328 ft (100 m)

Modbus

Supports Modbus RTU and Modbus TCP with 32-bit floating point values, integers, and
scaled integers.

Modbus Registers are user-specified.

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A.3.4 OPC

OPC server supports OPC DA v2, v3

A.3.5 EtherNet/IP

Supports EtherNet/IP protocol with 32-bit Floating Point values and Integers. EtherNet/IP
Assembly Input-Output instances are user configurable. EtherNet/IP specifications are
managed and distributed by ODVA.

A.4 Self-organizing network specifications

A.4.1 Protocol

IEC 62591(WirelessHART®), 2.4 - 2.5 GHz DSSS.

A.4.2

A.4.3

A.4.4

A.4.5

Maximum network size

100 wireless devices at eight seconds. 50 wireless devices at four seconds. 25 wireless
devices at two seconds. 12 wireless devices at one seconds.

Supported device update rates

1, 2, 4, 8, 16, 32 seconds or 1–60 minutes

Network size/latency

100 Devices: less than 10 seconds 50 Devices: less than five seconds.

Data reliability

>99 percent

A.5 System security specifications

A.5.1 Ethernet security specifications

Secure Sockets Layer (SSL) enabled (default) TCP/IP communications

A.5.2

68 Emerson.com/Rosemount

Gateway access

Role-based Access Control (RBAC) including Administrator, Maintenance, Operator, and
Executive. Administrator has complete control of the Gateway and connections to host
systems and the self-organizing network.

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A.5.3 Self-organizing network

AES-128 Encrypted WirelessHART, including individual session keys. Drag and drop device
provisioning, including unique join keys and white listing.

A.5.4 Internal firewall

User Configurable TCP ports for communications protocols, including Enable/Disable and
user specified port numbers. Inspects both incoming and outgoing packets.

A.5.5 Third party certification

Wurldtech: Achilles Level 1 certified for network resiliency

National Institute of Standards and Technology (NIST): Advanced Encryption Standard
(AES) Algorithm conforming to Federal Information Processing Standard Publication 197
(FIPS-197).

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2.93

(74,42)

A

3.51
(89)

2.96
(75)

9.02

(229)

2.81

(71,4)

2.525

(64,14)

11.15
(283)

12.03
(306)

6.72

(171)

4.78

(121)

3.08
(78)

1.59
(40)

3.99

(101)

B

C

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A.6 Dimensional drawings

Figure A-1: Gateway

A. Lower cover (remove for electrical connections)
B. Ground lug
C. 1/2-in. NPT conduit connection (four places)

Dimensions are in inches (millimeters).

70 Emerson.com/Rosemount

WL2

WL4

WL3

WN2

A A A A

B

C

D

D

D

D

E

E

F

G

H I

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Figure A-2: Remote Omni-Antenna Kit

A.6.1

A. Antenna
B. 2 ft. (6,1 m) cable
C. 10 ft. (3,0 m) cable

D. Lightning arrestor

E. Interchangeable cables

F. 50 ft. (15,2 m) cable
G. 30 ft. (9,1 m) cable
H. 40 ft. (12,2 m) cable

I. 25 ft. (7,6 m) cable

Remote omni-antenna kit

The remote omni-antenna kit includes sealant tape for remote antenna connection, as
well as mounting brackets for the antenna, lightning arrestor, and the Smart Wireless
Gateway.

Lightning protection is included on all the options. WL3 and WL4 provide lightning
protection along with the ability to have the Gateway mounted indoors, the antenna
mounted outdoors, and the lightning arrestor mounted at the building egress.

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Note

The coaxial cables on the remote antenna options WL3 and WL4 are interchangeable for
installation convenience.

A.7 Ordering information

Table A-1: Emerson Wireless 1420 Gateway Ordering Information

The starred offerings (★) represent the most common options and should be selected for best
delivery. The non-starred offerings are subject to additional delivery lead time.

Model Product Description

1420 Smart Wireless Gateway

Power Input

A 24 VDC nominal (10.5-30 VDC) ★

Ethernet Communications - Physical Connection

(1) (2)

1

2

(3) (4)

Ethernet ★

Dual Ethernet ★

Wireless Update Rate, Operating Frequency, and Protocol

A3 User configurable update rate, 2.4 GHz DSSS, WirelessHART ★

Serial Communication

N None ★

(5)

A

Modbus RTU via RS485 ★

Ethernet Communication - Data Protocols

2 Webserver, Modbus TCP/IP, AMS Wireless Configurator ready,

HART-IP

4 Webserver, Modbus TCP/IP, AMS Wireless Configurator ready,

HART-IP, OPC

(6)

5

(6)

6

DeltaV™ ready ★

Ovation™ ready ★

8 Webserver, EtherNet/IP, AMS Wireless Configurator ready,

HART-IP

9 Webserver, EtherNet/IP, Modbus TCP/IP, AMS Wireless

Configurator ready, HART-IP

Options (include with selected model number)

Product Certifications

N5

U.S.A. Division 2

★

★

★

★

★

N6 CSA Division 2, Non-incendive ★

(7)

N1

ND

(7)

ATEX Type n ★

ATEX Dust ★

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Table A-1: Emerson Wireless 1420 Gateway Ordering Information (continued)

(7)

N7

(7)

NF

(7)

KD

(7)

N3

(7)

N4

NM Technical Regulation Customs Union (EAC) Type N ★

Redundancy Options

RD Gateway redundancy ★

Adapters

J1 CM 20 conduit adapters ★

J2 PG 13.5 conduit adapters ★

J3 NPT conduit adapters ★

Antenna Options

IECEx Type n ★

IECEx Dust ★

FM & CSA Division 2, Non-incendive and ATEX Type n ★

China Type n ★

TIIS Type n ★

(8) (9) (10)

(11)

WL2 Remote antenna kit, 50 ft. (15,2 m) cable, lightning arrestor ★

WL3 Remote antenna kit, 20 ft. (6,1 m) and 30 ft. (9,1 m) cables,

lightning arrestor

WL4 Remote antenna kit, 10 ft. (3,0 m) and 40 ft. (12,2 m) cables,

lightning arrestor

(12)

WN2

High-gain, remote antenna kit, 25 ft. (7,6 m) cable, lightning
arrestor

Typical Model Number: 1420 A 2 A3 A 2 N5

(1) Single active 10/100 baseT Ethernet port with RJ45 connector.
(2) Additional ports disabled.
(3) Dual active 10/100 baseT Ethernet ports with RJ45 connectors.
(4) Multiple active ports have separate IP addresses, firewall isolation, and no packet forwarding.
(5) Convertible to RS232 via adaptor, not included with Gateway.
(6) Includes Webserver, Modbus TCP, AMS Ready, HART-IP, and OPC.
(7) Options may or may not come with POE. See terminal block configuration for determination if

the device is compatible with POE.

(8) Requires the selection of Dual Ethernet option code 2.
(9) Not available with DeltaV Ready option code 5.
(10) Not available with EtherNet/IP option codes 8 and 9.
(11) The WL2, WL3, WL4, and WN2 options require minor assembly.
(12) Not available in all countries.

A.8 Accessories and spare parts

★

★

Table A-2: Accessories

Item description Part number

AMS Wireless SNAP-ON™, 1 Gateway license 01420-1644-000

1

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Table A-2: Accessories (continued)

Item description Part number

AMS Wireless SNAP-ON, 5 Gateway licenses 01420-1644-000

2

AMS Wireless SNAP-ON, 10 Gateway licenses 01420-1644-000

3

AMS Wireless SNAP-ON, 5-10 Upgrade licenses 01420-1644-000

4

Serial Port HART modem and cables only 03095-5105-000

1

USB Port HART modem and cables only 03095-5105-000

2

Table A-3: Spare Parts

Item description Part number

Spare kit, WL2 replacement
Lightning arrestor

Spare kit, WL3 replacement
and Lightning arrestor

Spare kit, WL4 replacement
and Lightning arrestor

Spare kit, WN2 replacement
cable, and Lightning arrestor

(1)

, Remote antenna, 50 ft (15,2 m) cable, and

(1)

, Remote antenna, 20/30 ft (6,1/9,1 m) cables,

(1)

, Remote antenna, 10/40 ft (3,0/12,2 m) cables,

(1)

, High Gain, Remote antenna, 25 ft (7,6 m)

(2)

01420-1615-030
2

01420-1615-030
3

01420-1615-030
4

01420-1615-040
2

(1) Can not upgrade from integral to remote antenna.
(2) Not available in all countries.

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B Product Certifications

Rev 2.0

B.1 European directive information

A copy of the EU Declaration of Conformity can be found at the end of the Quick Start
Guide. The most recent revision of the EU Declaration of Conformity can be found at

Emerson.com/Rosemount.

B.2 Telecommunication Compliance

All wireless devices require certification to ensure that they adhere to regulations
regarding the use of the RF spectrum. Nearly every country requires this type of product
certification. Emerson™ is working with governmental agencies around the world to supply
fully compliant products and remove the risk of violating country directives or laws
governing wireless device usage.

B.3 FCC and IC

This device complies with Part 15 of the FCC Rules. Operation is subject to the following
conditions: This device may not cause harmful interference. This device must accept any
interference received, including interference that may cause undesired operation. This
device must be installed to ensure a minimum antenna separation distance of 20 cm from
all persons.

B.4 Ordinary location certification

As standard, the transmitter has been examined and tested to determine that the design
meets the basic electrical, mechanical, and fire protection requirements by a nationally
recognized test laboratory (NRTL) as accredited by the Federal Occupational Safety and
Health Administration (OSHA).

B.5 Installing Equipment in North America

The US National Electrical Code® (NEC) and the Canadian Electrical Code (CEC) permit the
use of Division marked equipment in Zones and Zone marked equipment in Divisions. The
markings must be suitable for the area classification, gas, and temperature class. This
information is clearly defined in the respective codes.

B.6 USA

N5 U.S.A. Division 2

Certificate:

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Standards:

Markings:

Special Conditions for Safe Use (X):

1. Explosion Hazard. Do not disconnect equipment when a flammable or combustible
atmosphere is present.

B.7 Canada

N6 Canada Division 2

Certificate:

Standards:

Markings:

Special Conditions for Safe Use (X):

FM Class 3600 – 2011, FM Class 3611 – 2004, FM Class 3616 – 2011, UL 50 ­11th Ed, ANSI/ISA 61010-1 - 2012

NI CL 1, DIV 2, GP A, B, C, D T4; Suitable for use in CL II, III, DIV 2, GP F, G T4;
T4 (–40 °C ≤ Ta ≤ 60 °C) Nonincendive outputs to remote antenna when
connected per Rosemount drawing 01420-1011; Type 4X

CSA 70010780

CAN/CSA C22.2 No. 0-M91 (R2001), CAN/CSA Std C22.2 No. 94-M91
(R2001), CSA Std C22.2 No. 142-M1987, CSA Std C22.2 No. 213-M1987,
CSA C22.2 No. 61010-1 - 2012

Suitable for Class 1, Division 2, Groups A, B, C, and D, T4; when connected
per Rosemount drawing 01420-1011; Type 4X

1. Explosion Hazard. Do not disconnect equipment when a flammable or combustible
atmosphere is present.

B.8 Europe

N1 ATEX Type n

Certificate:

Standards:

Markings:

Special Conditions for Safe Use (X):

1. The equipment is not capable of withstanding the 500 V insulation test required by
clause 6.5.1 of EN 60079-15:2010. This must be taken into account when installing
the equipment.

2. The surface resistivity of the antenna is greater than 1 GΩ. To avoid electrostatic
charge build-up, it must not be rubbed with a dry cloth or cleaned with solvents.

ND ATEX Dust

Certificate:

Standards:

Baseefa07ATEX0056X

EN 60079-0: 2012, EN 60079-15: 2010

II 3 G Ex nA IIC T4 Gc, T4(–40 °C ≤ Ta ≤ +65 °C), V

Baseefa07ATEX0057X

EN 60079-0: 2012, EN 60079-31: 2009

MAX

= 28Vdc

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Markings:

Special Conditions for Safe Use (X):

1. The surface resistivity of the antenna is greater than 1 GΩ. To avoid electrostatic
charge build-up, it must not be rubbed with a dry cloth or cleaned with solvents.

II 3 D Ex tc IIIC T135 °C Dc, (-40 °C ≤ Ta ≤ +65 °C)

B.9 International

N7 IECEx Type n

Certificate:

Standards:

Markings:

Special Conditions for Safe Use (X):

1. The apparatus is not capable of withstanding the 500 V electrical strength test as
defined in Clause 6.5.1 of IEC 60079-15:2012. This must be taken into account
during installation.

2. The surface resistivity of the antenna is greater than 1 GΩ. To avoid electrostatic
charge build-up, it must not be rubbed with a dry cloth or cleaned with solvents.

NF IECEx Dust

IECEx BAS 07.0012X

IEC 60079-0: 2011, IEC 60079-15: 2010

Ex nA IIC T4 Gc, T4(–40 °C ≤ Ta ≤ +65 °C), V

MAX

= 28Vdc

Certificate:

Standards:

Markings:

Special Conditions for Safe Use (X):

1. The surface resistivity of the antenna is greater than 1 GΩ. To avoid electrostatic
charge build-up, it must not be rubbed with a dry cloth or cleaned with solvents.

B.10 Brazil

N2 UL-BR 15.0350X

Certificate:

Standards:

Markings:

Special Conditions for Safe Use (X):

1. See certificate for special conditions.

IECEx BAS 07.0013X

IEC 60079-0: 2011, IEC 60079-31: 2008

Ex tc IIIC T135 °C Dc, (–40 °C ≤ Ta ≤ +65 °C)

UL-BR 15.0350X

ABNT NBR IEC 60079-0:2008 + Errata 1:2011, IEC 60079-15:2012

Ex nA IIC T4 Gc, T4(–40°C ≤ Ta ≤ +65°C)

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B.11 China

N3 China Type n

Certificate:

Standards:

Markings:

Special Conditions for Safe Use (X):

1. See certificate for special conditions.

CNEx16.1795X

GB3836.1 - 2010, GB3836.8 - 2014

Ex nA IIC T4 Gc, T4(–40°C∼+65°C)

B.12 Japan

N4 TIIS Type n

Certificate:

Markings:

T64855

Ex nA nL IIC T4

B.13 EAC – Belarus, Kazakhstan, Russia

NM Technical Regulation Customs Union (EAC) Type n

Certificate:

Markings:

RU C-US.ГБ05.B.00578

2Ex nA IIC T4 X; T4(–40 °C ≤ Ta ≤ +65 °C) IP66

Special Conditions for Safe Use (X):

1. See certificate for special conditions.

B.14 Combination

KD Combination of N1, N5, and N6

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™

Ready

C DeltaV™ Ready

C.1 Overview

Native integration with DeltaV enables the Emerson™ Wireless 1420 Gateway (Gateway) to
be autosensed and easily commissioned for seamless integration with all DeltaV
applications: Explorer, Diagnostics, and Control Studio. WirelessHART® devices can be
easily added to the wireless field network and then reconciled through DeltaV Explorer and
assigned to analog channels through drag and drop assignment.

C.2 Latency considerations in control logic design

and operation

Since the DeltaV wireless I/O scanner software requests updates for of the devices each
second, DeltaV receives updates on a particular field device once every five seconds. That
is not necessarily synchronized with the update rate of the field device. Also, there is some
latency between when the field device takes a process sample and when it is permitted to
pass its value onto the wireless network. Status update responses can also increase latency
in some instances. So for example, if a device updates once every eight seconds, and
wireless network latency is two seconds, the amount of time that could pass between
when an event occurred in the field and before it is available to the DeltaV I/O bus is
between zero and 15 (8+2+5) seconds. The update period of the DeltaV control module
should be added to that total to determine the range of latencies before an event in the
field can be acted upon by the control system.

Operators should be made aware that the update rate of wireless measurements on
operator screens are somewhat slower than those from wired devices. For example, if the
operator initiates a valve movement, it can be five to 15 seconds before confirming
feedback appears on the operator screen. Any control logic designed along the same
principles should also take the update rates and latencies into account as well.

C.3 Requirements

DeltaV

Version 10.3 or newer.

Gateway

DeltaV Ready option (Data Protocol option 5). See Ordering information.

C.4 Mounting and connecting

Mount the DeltaV Ready Gateway in the same manner as a standard Gateway. (Mounting).
The Gateway should be mounted in a location that allows convenient access to the DeltaV
control network as well as the wireless field network.

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Connect the Gateway’s primary Ethernet port (Ethernet 1) into the DeltaV primary control
network. If the dual Ethernet option (Physical Connection code 2) was ordered with the
Gateway, connect the secondary Ethernet port (Ethernet 2) into the DeltaV secondary
control network.

Figure C-1: Delta V Control Network Architecture

A. Pro+ engineering station
B. Primary control network
C. Secondary control network

D. Controller and I/O

E. Gateway

C.5 Setup

Out of the box the Gateway is pre-configured for use on the DeltaV control network. In the
DeltaV Explore application, the Gateway will automatically appear in the Decommissioned
Nodes folder.

C.5.1

Setup a wireless network

To setup a wireless network will require three steps:

Procedure

1. Commission the Gateway.

2. Assign wireless device tags.

3. Assign Gateway to controller and download.

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Figure C-2: Decommissioned Nodes Folder within DeltaV Explorer

C.5.2 Commission the gateway

Commission the Gateway using the following procedure:

Procedure

1. Navigate to START>PROGRAMS>DELTAV>ENGINEERING> DELTAV EXPLORE to
launch the DeltaV Explorer application.

2. Expand the folder SYSTEM CONFIGURATION >PHYSICAL
NETWORK>DECOMMISSIONED NODES.

3. Right click on the Smart Wireless Gateway and select Commission.

4. Enter a name for the Gateway and select OK.

5. Select YES when prompted to Auto-Sense Wireless Gateway.

At this time the Reconcile I/O window will appear. The purpose of this screen is to
assign WirelessHART devices to DeltaV I/O channel. This allows the wireless device
to be referenced in other DeltaV applications like Control Studio.

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™

Ready Reference Manual

Figure C-3: Assign WirelessHART Devices to DeltaV I/O Channel

C.5.3 Assign wireless device tags

Assign wireless device tags using the following procedure:

Procedure

1. Drag and drop WirelessHART device from the Unassigned Wireless HART Devices:
list to the Channels: list.

2. Repeat this process for each wireless device until all have been assigned.

3. Select OK to continue.

C.5.4

Assign the gateway to a DeltaV controller

Next the Gateway will need to be assigned to a DeltaV Controller and download all. Assign
and download the Gateway using the following procedure:

Procedure

1. Right click on the Gateway and select Assign…

2. Use the browse window and select the desired controller.

3. Select OK to close the assignment window.

4. Right click on the Gateway and select Download.

5. Follow the download dialog.

6. Select OK to close the download window.

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Example

Figure C-4: Gateway Context Menu (Right Click)

Now the Gateway and wireless devices are fully commissioned and available to use in
other DeltaV applications. When new devices are added to the wireless network, they will
need to be assigned to DeltaV channels through the reconcile process (right click on
Gateway and select configure IO).

Note

Logging in to the Gateway is not possible using the default TCP/IP network setting. If the
Gateway is decommissioned, use an IP address 10.5.255.254. If the Gateway is
commissioned, right click on the Gateway in DeltaV Explore and select Wireless Gateway
Web Interface.

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Redundancy

D Redundancy

D.1 Overview

Redundancy for the Emerson™ Wireless 1420 Gateway (Gateway) increases the availability
of the wireless field network by providing two sets of physical hardware which operate as a
single Gateway system. This section covers setup and installation of a redundant Gateway
system. It also covers diagnostics and integration to help monitor the health of the
redundant Gateway system.

• Where to mount the respective antennas

• Illustration of maximum redundancy including dual switch and UPS

• Understanding how the fail over works and experience to expect

• How to leverage the multimaster capability for Modbus® integrations

D.2 Requirements

Gateway

• Firmware Version 4.3.19 or greater is recommended

• RD option for Gateway Redundancy

• Static IP Address

• Must have matching output protocols (e.g. Modbus or OPC) on each Gateway

Host system

• Ethernet connection for Modbus TCP or OPC DA communications

• Serial (RS-485) connection for Modbus RTU communications

D.3 Setup redundant gateways

When configuring redundant Gateways, it is only necessary to configure one system. The
other Gateway will be configured automatically when it is paired with the first Gateway.

Choose one Gateway as the starter Gateway. For the purposes of this document, it will be
referred to as Gateway A. The other Gateway will be referred to as Gateway B.

D.3.1

Configure redundancy system settings

To configure redundancy system settings:

Procedure

1. Connect a PC/laptop to the Ethernet 1 port on Gateway A.

2. Log in using the admin user account.

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3. Navigate to System Settings → Gateway → Redundancy.

• Gateway A’s factory serial number will be assigned to Gateway A.

• Gateway B’s factory serial number will be assigned to Gateway B.

Example

The Gateway names will be used in diagnostic messages and host system integration to
help identify each Gateway. It is recommended that these names be marked on each
physical Gateway, in addition to the configuration settings.

Selecting left or right for Gateway A is for visualization purposes only. It has no effect on
performance or functionality.

Figure D-1: System Settings>Gateway>Redundancy

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Figure D-2: Redundancy Status

D.3.2 Pair both gateways

After the redundancy system settings have been configured, the two Gateways must be
connected and undergo a pairing process.

To pair both Gateways and form a redundant system:

Procedure

1. Connect a PC/laptop to the primary Ethernet port on Gateway A.

2. Log in using the admin user account.

3. Navigate to Diagnostics → Advanced → Redundancy Status.

4. Connect the secondary Ethernet port on Gateway A to the secondary Ethernet port
on Gateway B (see Figure D-3, Figure D-3).

5. A dialog will appear on the page; select Form redundant pair.

6. Wait for the Pairing to redundant peer status to turn green.

7. Select Return to page.

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Example

Figure D-3: Redundancy Setup Connections

A. Gateway A
B. Gateway B
C. PC/Laptop

D. Primary Ethernet

E. Secondary Ethernet

Reference Manual

Once the Gateways have finished the pairing process, Gateway A will appear as the current
active Gateway on the left hand side and Gateway B will be the standby Gateway on the
right (note that left/right hand appearance can be changed on the Redundancy System
Settings page). If significant configuration changes need to be downloaded to the standby
Gateway, it may temporarily go offline shortly after the pair process is complete. This is
expected behavior and does not represent instability in the system.

D.4 Mounting and connections

Redundant Gateways follow similar mounting and connection practices as a standalone
Gateway. Refer to Installation for more information. In addition to the standard practices,
the following considerations should be taken when installing redundant Gateways.

D.4.1

Mounting

The redundant Gateways should be mounted in a location that allows convenient access
to the process control network as well and provides good coverage for the wireless field
network.

The redundant Gateway antennas should be mounted at the same height and be spaced
between 3–9 ft. (1–3 m) horizontally. This is to ensure that they provide identical coverage
for the wireless field network and to help eliminate coverage gap in the event of a switch
over.

D.4.2

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Ethernet

An Ethernet connection to the host system will support Modbus TCP, OPC, AMS™ Wireless
Configurator, and HART-IP™ protocols. When using this architecture, connect the
secondary Ethernet port on Gateway A directly to the secondary Ethernet port on Gateway
B. Then connect the primary Ethernet ports for both Gateways to a process control

A

B

C

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network using separate/redundant network switches. See Figure D-4 Ethernet Connection
Architecture.

Figure D-4: Ethernet Connection Architecture

A. Engineering station
B. Process control network
C. Gateway A

D. Gateway B

E. Primary Ethernet
F. Secondary Ethernet

Note

The primary Ethernet port for each Gateway should be connected to separate network
switches on the same process control network. Consult a control system administrator for
more details about available redundant network switches.

D.4.3

Simplex RS-485

A simplex RS-485 host connection supports Modbus RTU protocol. When using this
architecture, connect the secondary Ethernet port on Gateway A directly to the secondary
Ethernet port on Gateway B. Then wire the RS-485 ports for both Gateways in parallel to a
single serial card at the host system. See Figure D-5 Simplex RS-485 Architecture.

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B

C

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Figure D-5: Simplex RS-485 Architecture

A. Engineering station
B. Process control network
C. Controller and I/O

D. Serial card

E. RS-485 bus
F. Secondary Ethernet

Note

In either a simplex or dual RS-485 architecture, the primary Ethernet ports can be
connected to an asset management network to provide connectivity to AMS Device
Manager or AMS Wireless Configurator.

D.4.4

Dual RS-485

A Dual RS-485 host connection support Modbus RTU protocol. When using this
architecture, connect the secondary Ethernet port on Gateway A directly to the secondary

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Ethernet port on Gateway B. Then wire the RS-485 ports for both Gateways separately to
dual serial cards at the host system. See Figure D-6 Dual RS-485 Architecture.

Figure D-6: Dual RS-485 Architecture

A. Engineering station
B. Process control network
C. Controller and I/O

D. Dual serial card

E. RS-485 bus
F. Secondary Ethernet

Note

By default, only the active Gateway in a redundant system will respond to Modbus polling
requests. If simultaneous polling is desired, login to the Gateway web interface, navigate
to Setup>Modbus>Communications and set “Respond when running as redundant
standby?” to Yes. Only use this setting in a dual RS-485 architecture.

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D.4.5 Power

Power for the redundant Gateways should be applied after all primary and secondary
Ethernet and RS-485 connections have been made. Using separate uninterruptable power
supplies (UPS) is recommended to ensure availability of the redundant Gateway system.

D.5 Diagnostics

The redundant system will perform many diagnostic checks to verify the health and
connectivity of the system. In the event of a failure, it can take up to 30 seconds for the
Gateway to trade positions.

Figure D-7: Redundancy Status (Diagnostics>Advanced>Redundancy Status)

These diagnostics can also be mapped to Modbus registers or OPC tags. The following
table covers what diagnostics are included on the Redundancy Status page as well as how
they can be mapped as parameters in Modbus or OPC.

Table D-1: Redundancy Diagnostics

Parameter Description Data type

REDUNDANT_HEALTHYOverall redundancy status indicating the system is ready for a switch-

over

RF_COVERAGE_FAILURECheck to verify that both Gateways have the same RF coverage of the

wireless field network

REDUNDANT_A_ONLINEOperational status of Gateway A Boolean

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Boolean

Boolean

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Table D-1: Redundancy Diagnostics (continued)

Parameter Description Data type

REDUNDANT_A_MAS
TER

REDUNDANT_A_PING Indication if Gateway A is able to ping designated host IP address Boolean

REDUNDANT_A_ETH0 Electrical connection status of the primary Ethernet port for Gateway A 8-bit unsigned int

REDUNDANT_B_ONLINEOperational status of Gateway B Boolean

REDUNDANT_B_MAS
TER

REDUNDANT_B_PING Indication if Gateway B is able to ping designated host IP address Boolean

REDUNDANT_B_ETH0 Electrical connection status of the primary Ethernet port for Gateway A 8-bit unsigned int

Indication if Gateway A is the active system Boolean

Indication if Gateway B is the active system Boolean

D.5.1 Configure network connectivity

In addition to the redundancy diagnostics, an additional check may be configured to test
network connectivity to a host system or other application. The redundant system will use
this check to determine the best connectivity option and which Gateway should be set to
the active Gateway.

To configure network connectivity check:

Procedure

1. Navigate to System Settings → Gateway → Ethernet Communication.

2. Enter the host system IP address in the Check Network Connectivity IP Address field.

3. Select Save Changes.

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Example

Figure D-8: Network Connectivity Check (System Settings>Gateway>Ethernet
Communication)

D.6 Gateway replacement

When replacing or reintroducing a Gateway in a redundant system, always connect both
the primary and secondary Ethernet connections before powering the standby Gateway. If
the Gateway is being reintroduced (i.e. it was a part of the original redundant system), it
will automatically rejoin the redundant system. If the Gateway is new or has been set to
default configuration, it will need to be paired to the current active Gateway. Navigate to
System Settings>Gateway>Redundancy and follow the recommended actions on that
page or follow the procedure above to pair Gateways and form a redundant system.

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Rev. HE

2020

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