B&B Electronics ESR902W User Manual

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(RS-232/422/485)

Vlinx Wireless

Serial Servers

Models:

ESR901W232, ESR901W485,

ESR902W, ESR904W

Documentation Number: ESR90xW-4905m

pn#6876-rev001

B&B Electronics Mfg Co Inc – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100- Fax815-433-5104www.bb-elec.com B&B Electronics Ltd – Westlink Commercial Park – Oranmore, Galway, Ireland – Ph +35391-792444– Fax +35391-792445www.bb-europe.com

Documentation Number: ESR90xW-4905m

B&B Electronics Mfg Co Inc – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100- Fax815-433-5104www.bb-elec.com B&B Electronics Ltd – Westlink Commercial Park – Oranmore, Galway, Ireland – Ph +35391-792444– Fax +35391-792445www.bb-europe.com

International Headquarters

B&B Electronics Mfg. Co. Inc.

707 Dayton Road

Ottawa, IL 61350 USA

Phone (815)433-5100--General Fax (815)433-5105

Website: www.bb-elec.com

Sales e-mail:orders@bb-elec.com --Fax (815)433-5109

Technical Support e-mail:support@bb.elec.com --Fax (815)433-5104

European Headquarters

B&B Electronics Ltd.

Westlink Commercial Park

Oranmore, Co. Galway, Ireland

Phone +35391-792444--Fax +35391-792445

Website: www.bb-europe.com

Sales e-mail: sales@bb-europe.com

Technical Support e-mail: support@bb-europe.com

© B&B Electronics – November 2005

Documentation Number: ESR90xW-4905m

pn#6876-rev001

B&B Electronics Mfg Co Inc – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100- Fax815-433-5104www.bb-elec.com B&B Electronics Ltd – Westlink Commercial Park – Oranmore, Galway, Ireland – Ph +35391-792444– Fax +35391-792445www.bb-europe.com

2005 B&B Electronics. No part of this publication may be reproduced or transmitted in any form or by any means, electronic or

mechanical, including photography, recording, or any information storage and retrieval system without written consent. Information in this manual is subject to change without notice, and does not represent a commitment on the part of B&B Electronics.

B&B Electronics shall not be liable for incidental or consequential damages resulting from the furnishing, performance, or use of this manual.

All brand names used in this manual are the registered trademarks of their respective owners. The use of trademarks or other designations in this publication is for reference purposes only and does not constitute an endorsement by the trademark holder.

Documentation Number: ESR90xW-4905m

B&B Electronics Mfg Co Inc – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100- Fax815-433-5104www.bb-elec.com B&B Electronics Ltd – Westlink Commercial Park – Oranmore, Galway, Ireland – Ph +35391-792444– Fax +35391-792445www.bb-europe.com

 

Table of Contents

 

CHAPTER 1:

INTRODUCTION.......................................................................

1

ABOUT YOUR VLINX ESR90XW WIRELESS SERIAL SERVER ...................................

1

Features ................................................................................................................

 

2

Communication Modes .........................................................................................

2

802.11 WIRELESS NETWORKING BASICS ...................................................................

3

802.11 Wireless Networking .................................................................................

4

ESR90XW STARTUP PROCEDURE..............................................................................

6

1. Package Checklist.............................................................................................

6

2. Hardware Setup ................................................................................................

6

3. Power Up

..........................................................................................................

7

4. Set Up PC..........................................................................................................

8

5. Configuration....................................................................................................

8

6. Operation

..........................................................................................................

8

CHAPTER 2:

VLINX ESR90XW HARDWARE ............................................

9

PACKAGE CHECKLIST ................................................................................................

9

HARDWARE FEATURES ............................................................................................

10

Indicators............................................................................................................

 

10

Reset Switch

........................................................................................................

10

Connectors ..........................................................................................................

 

11

RS-485Receiver Biasing.....................................................................................

12

RS-422/485Terminating .....................................................................................

12

CONNECTIONS FOR SERVER CONFIGURATION..........................................................

12

OTHER HARDWARE CONNECTIONS..........................................................................

13

CHAPTER 4: DEVICE CONFIGURATION VIA WEB CONSOLE...........

15

ACCESSING THE WEB BROWSER..............................................................................

15

CONFIGURING THE SERIAL PORT .............................................................................

16

CONFIGURINGCOMMUNICATIONSMODES ANDPROTOCOLS...................................

16

CONFIGURING NETWORK PROPERTIES.....................................................................

17

CONFIGURING WIRELESS PROPERTIES .....................................................................

17

MANAGING USERS ACCOUNTS ................................................................................

18

USING DEVICE STATUS INFORMATION ....................................................................

19

Documentation Number: ESR90xW-4905m

Table of Contents

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B&B Electronics Mfg Co Inc – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100- Fax815-433-5104www.bb-elec.com B&B Electronics Ltd – Westlink Commercial Park – Oranmore, Galway, Ireland – Ph +35391-792444– Fax +35391-792445www.bb-europe.com

CHAPTER 5: ADJUSTING THE BEHAVIOR OF DEVICE

 

COMMUNICATION PORTS .................................................................................

21

POLLING STRINGS....................................................................................................

22

TIMEOUTS................................................................................................................

22

DATA QUANTITIES...................................................................................................

22

USING MULTIPLE CONDITIONS ................................................................................

22

CHAPTER 6: DEVICE DISCOVERY AND VIRTUAL COM PORTS ......

23

DEVICE DETECTION UTILITY ...................................................................................

23

VCOM PORT SETUP ................................................................................................

24

APPENDIX A: VLINX ESR90XW TECHNICAL DATA ...................................

25

PRODUCT SPECIFICATIONS.......................................................................................

25

DEFAULT SERVER PROPERTIES ................................................................................

27

VLINX ESR90XW DIMENSIONAL DIAGRAMS .........................................................

28

APPENDIX B: RS-232/422/485CONNECTIONS.................................................

31

DB-9PIN-OUTS FOR RS-232AND RS-232/422/485CONNECTIONS .........................

31

TERMINALBLOCKPIN-OUTFORRS-422 ANDRS-485 (VLINXESR901W485 ONLY)

................................................................................................................................

32

APPENDIX C: CONFIGURATION PORT CONNECTIONS ............................

35

RJ-45PIN-OUT FOR CONFIGURATION PORT CONNECTION .......................................

35

DECLARATION OF CONFORMITY.................................................................

357

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Documentation Number: ESR90xW-4905m

B&B Electronics Mfg Co Inc – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100- Fax815-433-5104www.bb-elec.com B&B Electronics Ltd – Westlink Commercial Park – Oranmore, Galway, Ireland – Ph +35391-792444– Fax +35391-792445www.bb-europe.com

Introduction

Chapter 1: Introduction

Thank you for purchasing a Vlinx ESR90xW Wireless Serial Server!

Like all B&B Electronics products, your serial server has been manufactured to high standards of quality and performance to ensure your complete satisfaction. Please read this manual and carefully follow the instructions to achieve best results. For additional information on this and other B&B products, and for technical support, and for technical support, call 815-433-5100option 3, or access B&B Electronics’ website at:www.bbelec.com

About Your Vlinx ESR90xW Wireless Serial Server

Vlinx ESR90xW Wireless Serial Servers are part of B&B Electronics growing family of device servers, products that allow you to connect equipment with available serial connections into existing networks. Vlinx ESR90xW wireless serial servers connect RS-232, RS-422 or RS-485 devices to a wireless network via wireless access points, eliminating the need for network cabling. Devices connected to the serial ports on your Vlinx ESR90xW can be accessed from any node on the LAN using Direct IP Mode, Virtual COM Port, or Serial Tunneling(Paired Mode) connections. Based on the 802.11g wireless standard, Vlinx ESR90xW servers operate at up to 54Mbps over the 2.4 GHz band, which does not require licensing.

Vlinx ESR90xW Wireless Serial Servers (ESR902W shown)

Vlinx ESR90xW wireless serial servers are built for use in industrial environments and feature rugged DIN or panel mountable enclosures. They operate from AC or DC power supply voltages and feature removable screw terminal power connectors.

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Introduction

Features

Backward compatibility with 802.11b (up to 11 Mbps)

Multi-interfaceserial ports

oThe Vlinx 901W232 features one RS-232serial port using a standardDB-9Mconnector

oThe Vlinx 901W485 features one RS-422/485serial port using a removable terminal block connector

oThe Vlinx 902W features two serial ports (one RS-232and onesoftware-selectableRS-232/422/485)usingDB-9Mconnectors

oThe Vlinx 904W features four serial ports (two RS-232and twosoftware-selectableRS-232/422/485)usingDB-9Mconnectors

Rugged DIN rail or panel mountable IP30 enclosure

Accepts AC or DC power over a wide voltage range

LAN and WAN Communications via wireless access point

TCP or UDP Client or Server operation - configurable

Software Support - Windows 98/ME/2000/XP or NT 4.0

Field upgradeable

Configuration of wireless and serial port settings using:

oVlinx Web Console, which allows configuration via the network using a web browser.

Communication Modes

Vlinx ESR90xW Wireless Serial Servers enable communication with serial devices over a wireless network. The three main types of communications supported by ESR90xW Wireless Serial Servers are Direct IP Mode, Virtual COM Modeand Serial Tunneling Mode.

Direct IP Mode

Direct IP connections allow applications using TCP/IP or UDP/IP socket programs to communicate with the asynchronous serial ports on the serial server. In this type of application the serial server is configured as a TCP or UDP server. The socket program running on the PC establishes a communication connection. The data is sent directly to and from the serial port on the server. When using UDP protocol the server can be configured to broadcast data to and receive data from multiple IP addresses.

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Documentation Number: ESR90xW-4905m

B&B Electronics Mfg Co Inc – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100- Fax815-433-5104www.bb-elec.com B&B Electronics Ltd – Westlink Commercial Park – Oranmore, Galway, Ireland – Ph +35391-792444– Fax +35391-792445www.bb-europe.com

B&B Electronics Mfg Co Inc – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100- Fax815-433-5104www.bb-elec.com B&B Electronics Ltd – Westlink Commercial Park – Oranmore, Galway, Ireland – Ph +35391-792444– Fax +35391-792445www.bb-europe.com

Introduction

Virtual COM Mode

Virtual COM Mode allows application programs to effectively extend their COM ports across the network. Data sent to that port is redirected via the network to a COM port on the serial server. Windows programs using standard Windows API calls are able to interface to these virtual COM ports. When a program on the PC opens the port, it communicates with the remote serial device connected to one of the ports on the serial server.

After connection, the LAN is transparent to the program and serial device. Applications are able to work just as if the serial device is connected directly to a physical COM port on the computer. The virtual COM port software converts the application’s data into IP packets, sends it across the network to the serial server, which converts the IP packet back to serial data and sends the data out a serial port located on the serial server.

Serial Tunneling Mode

Serial Tunneling is also calledpaired mode. In this mode any two serial devices that can communicate across the wireless link will be able to communicate using two serial servers.

One server is configured as a TCP or UDP client and the other as a TCP/UDP server. When setting up the server the remote IP address section must contain the address of the client. This will allow the client’s IP address to pass the IP address-filteringfeature of the server. Conversely, the Remote IP address of the client must contain the server’s IP address. Both communication port numbers must be the same.

802.11 Wireless Networking Basics

Vlinx ESR90xW wireless serial servers allow you to connect non-network- enabled serial devices into a wireless network, giving you the capability to gather more data and implement remote programming and management. Serial devices no longer are limited to a physical connection to a PC. The serial device can be connected to a Vlinx ESR90xW wireless serial server anywhere within range of an 802.11g compatible wireless access point. Communication occurs transparently using TCP/IP or UDP/IP over a wireless link. This allows traditional Windows PC software access to serial devices anywhere on the wireless network.

The enabling technology for Vlinx ESR90xW wireless serial servers is based on the IEEE 802 standard. Some background on the standard follows.

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Introduction

802.11 Wireless Networking

IEEE 802.11 is a set of standards that defines how multiple devices can communicate on a wireless network. The standard has grown into a set of several standards that define various features and functions. The 802.11g standard defines the physical and data link layers for a wireless network using the 2.4 GHz frequency band, a band that does not require licensing. As a part of the IEEE family of standards, 802.11 WLANs are easily connected to 802.3 (Ethernet) LANs. Higher layer LAN protocols, network operating systems and internetworking protocols such as TCP/IP integrate seamlessly.

Under the IEEE 802.11 standard there can be two different types of devices on the wireless network: stations andaccess points (AP). Astation often is a PC equipped with a wireless network adapter. An 802.11access point is a radio with an interface that allows connection to a wired LAN. Access points run bridging software to facilitate the connection from wireless to wired network. The access point becomes the base station for the WLAN. It aggregates access to the wired network for multiple wireless stations. An access point may be a standalone device or a card in a PC.

Wireless Network Configurations

The 802.11 standard defines two modes of operation: infrastructure mode andad hoc mode.Infrastructure mode makes use of one or more access points connected to a wired LAN. Wireless stations communicate with access points to gain access to each other and/or the LAN. In the Basic Service Set (BSS) several stations communicate with one access point, which is connected to a wired LAN. In the Extended Service Set (ESS) two or more access points connect to the LAN creating a subnetwork.

In ad hoc mode, also called Independent Basic Service Set (IBSS), access points are not used. Wireless stations communicate directly with each other in apeer-to-peerfashion. This mode allows individual computers to set up a network where wireless infrastructure does not exist.

Vlinx ESR90xW wireless serial servers can be configured to operate in infrastructure mode only, ad hoc mode is not supported at this time. During device configuration a wireless configuration wizard guides you through the process of setting up the type of network, naming the network (specifying the SSID, or service set identifier) and other parameters.

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Documentation Number: ESR90xW-4905m

B&B Electronics Mfg Co Inc – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100- Fax815-433-5104www.bb-elec.com B&B Electronics Ltd – Westlink Commercial Park – Oranmore, Galway, Ireland – Ph +35391-792444– Fax +35391-792445www.bb-europe.com

B&B Electronics Mfg Co Inc – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100- Fax815-433-5104www.bb-elec.com B&B Electronics Ltd – Westlink Commercial Park – Oranmore, Galway, Ireland – Ph +35391-792444– Fax +35391-792445www.bb-europe.com

Introduction

IEEE 802.11g

IEEE 802.11g standard specifies a WLAN that operates on the 2.4 GHz band at data rates up to 54 Mbps, but is backward compatible with the earlier 802.11b standard (which operates at up to 11 Mbps). Systems can incorporate 802.11b and 802.11g equipment and they will interoperate. However, when connected into the same network the 802.11g equipment will operate at the 11 Mbps limitation of the 802.11b equipment.

For media access, 802.11 wireless networks use CSMA/CA, a scheme in which a station that intends to transmit ‘listens’ for traffic on the radio carrier frequency and sends data packets if the frequency is clear. If the receiving station receives the packet intact it sends an acknowledgement (ACK) to confirm the packet has been received. If the transmitting station does not receive an ACK it assumes a collision occurred and transmits again after a random delay period.

Communications distances vary depending on the type and thickness of material around an 802.11g node. The transmitter power output, the type of antenna used and the amount of attenuation through materials also affects the useable range. Electromagnetic noise, reflections, the amount of network traffic, other radio devices operating in the same frequency band also affect range and overall performance. In an infrastructure network the number of access points and their coverage pattern also affect how well the system operates. Typically an 802.11 device operating indoors will have a range from 100 feet minimum to about 300 feet maximum. Outdoors, some products, using high gain antennae may achieve line-of-sightranges of five miles or more.

Security is a significant concern for WLAN users. Whether security threats originate intentionally or unintentionally, wireless systems are more susceptible than wired systems. Vlinx ESR90xW offer several security options including WEP (Wired Equivalent Privacy), LEAP (Lightweight Extensible Authentication Protocol) and others.

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Introduction

ESR90xW Startup Procedure

Setup and configuration of your Vlinx ESR90xW wireless serial server is fast, straightforward and simple. You have several options from which to choose. The following procedure outlines an easy way to get your server set up and operational.

1. Package Checklist

To begin, check to see that you have everything you will require. The contents of your ESR90xW package should include:

One Vlinx ESR901W232, ESR901W485, ESR902W or ESR904W Wireless Serial Server

One SMA antenna

One Operation Manual

One Quick Start Guide

One CD containing

o Device Detection software

o Serial-IPVirtual COM Port Softwareo the Operation Manual (in pdf format)

o the Quick Start Guide (in pdf format)

2.Hardware Setup

1.Connect the antenna to your ESR90xW

2.Connect a standard Ethernet (CAT5/RJ-45straight through) cable from the PC network adapter to the ESR90xW Configuration Port

3.Connect 24 VAC or 12 to 30 VDC power to the ESR90xW

4.Connect the serial port on the ESR90xW to the serial port on your serial device. This is optional during the initial configuration steps but will be required for operation.

For RS-232operation, your ESR90xW is configured as a DTE and uses a DB9M connector. Use a straight throughRS-232cable if your serial device is configured as a DCE. If your serial device is configured as a DTE you will have to use a null modem (crossover) cable.

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Documentation Number: ESR90xW-4905m

B&B Electronics Mfg Co Inc – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100- Fax815-433-5104www.bb-elec.com B&B Electronics Ltd – Westlink Commercial Park – Oranmore, Galway, Ireland – Ph +35391-792444– Fax +35391-792445www.bb-europe.com

B&B Electronics Mfg Co Inc – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100- Fax815-433-5104www.bb-elec.com B&B Electronics Ltd – Westlink Commercial Park – Oranmore, Galway, Ireland – Ph +35391-792444– Fax +35391-792445www.bb-europe.com

Introduction

Figure 1. Direct Connection for Configuration

3.Power Up

1.Apply power to the ESR90xW

2.Front panel LED will illuminate with the following sequence:

a.Power LED will always be lit while device is powered

b.Signal Strength LED – White for 5 seconds, blink yellow/Red and go dark.

c.The Link/Activity LED will be red when the device is associating with an access point (if configured to do so)

d.The Link/Activity LED will be green when the device is associated with an access point (if configured to do so)

Note: The device by default is not configured to associate with an access point

Operating System Boot Completion Indication

e.Once the device has booted successfully into the operating system all of the LEDs with the exception of Power will blink once to indicate a completed boot sequence.

f.When this sequence starts all of the LEDs will be lit for one half of a second after which they will resume their previous state.

Figure 2. ESR90xW LEDs

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4.Set Up PC

1.Configure the PC to work in the 192.168.0.x private address range

2.Open a web browser

3.Enter 192.168.0.200 into the address bar of the browser

Figure 3. Web Console Device Information Page

5.Configuration

1.Enter your Username andPassword to Login. The default username is “Administrator” with no password.

2.Navigate to Wireless Settings, provide SSID name, configure security settings

3.Navigate to Serial Configuration, set up serial parameters to match your serial device

4.Click Apply and restart the ESR90xW

6.Operation

1.ESR90xW will boot up and attempt to connect to the designated access point

2.The Link LED will light when it makes the connection

3.Communications will occur between the PC and serial device

Figure 4. Infrastructure Mode Operation

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Documentation Number: ESR90xW-4905m

B&B Electronics Mfg Co Inc – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100- Fax815-433-5104www.bb-elec.com B&B Electronics Ltd – Westlink Commercial Park – Oranmore, Galway, Ireland – Ph +35391-792444– Fax +35391-792445www.bb-europe.com

B&B Electronics Mfg Co Inc – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100- Fax815-433-5104www.bb-elec.com B&B Electronics Ltd – Westlink Commercial Park – Oranmore, Galway, Ireland – Ph +35391-792444– Fax +35391-792445www.bb-europe.com

Vlinx ESR90xW Hardware

Chapter 2: Vlinx ESR90xW Hardware

Package Checklist

Vlinx ESR90xW Wireless Serial Servers are shipped with the following items included:

9A Vlinx ESR901W232, ESR901W485, ESR902W or ESR904W Wireless Serial Server

9This Operation Manual

9CD-ROMdisc with Device Detection Software and Serial/IP™ for Windows 98/ME/2000/XP/NT 4.0, Operation Manual and Quick Start Guide (in pdf format)

Figure 5. Front View of the Vlinx ESR901W232, ESR901W485,

ESR902W and ESR904W Wireless Serial Servers

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Vlinx ESR90xW Hardware

Hardware Features

Indicators

Power LED

Red: Indicates the device is receiving power from an external source

Signal Strength LED

Tri-color: Indicates the connection quality:

Dark: no connection or 0% signal strength

Red: poor signal, represents 1% to 60% signal strength

Blue: acceptable signal, represents 61% to 85% signal strength

Green: good signal, represents 86% to 100% signal strength

Link/ActivityLED

Dark: no wireless connection is being attempted

Solid Red: Indicates that a connection to a wireless access point or device is being attempted.

Blinking Red: When link is established, LED blinks.

Solid Green: Indicates that a connection to a wireless access point or device has been established.

Green With Red: Red flashes on and off when data is present on the wireless network.

Serial Port LEDs (for each port)

Blinking Red: Indicates the serial port is communicating.

Reset Switch

The Reset switch is a recessed switch located on the front of the Vlinx ESR90xW. It can perform more than one function:

Press 0 to 1 second: no effect

Press and hold 1 to 10 seconds: reset serial server operating system

Press and hold 10+ seconds: reset serial server to factory default settings.

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Documentation Number: ESR90xW-4905m

B&B Electronics Mfg Co Inc – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100- Fax815-433-5104www.bb-elec.com B&B Electronics Ltd – Westlink Commercial Park – Oranmore, Galway, Ireland – Ph +35391-792444– Fax +35391-792445www.bb-europe.com

B&B Electronics Mfg Co Inc – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100- Fax815-433-5104www.bb-elec.com B&B Electronics Ltd – Westlink Commercial Park – Oranmore, Galway, Ireland – Ph +35391-792444– Fax +35391-792445www.bb-europe.com

Vlinx ESR90xW Hardware

Connectors

Configuration Port Connector

One standard RJ-45receptacle that allows the serial server to be connected to personal computer for programming, troubleshooting and device configuration. A standardstraight-throughRJ-45(male) Ethernet cable can be used for this purpose. (This port is not intended to connect directly to an Ethernet network.)

Antenna Connector

The antenna connector is a reverse SMA connector.

(An omni-directionalantenna is supplied with ESR90xW wireless serial servers. All ESR90xW serial servers areFCC-certifiedwhen the supplied antenna is used.)

Serial Port Connector(s)

ESR901W232: OneDB-9Mconnector

ESR901W485: Onefive-terminalremovable terminal block

ESR902W: TwoDB-9Mconnectors

o Port 1:RS-232

oPort 2: software selectable forRS-232,RS-422orRS-485

ESR904W: FourDB-9Mconnectors

oPorts 1 & 3: RS-232

oPorts 2 & 4: software selectable forRS-232,RS-422or RS485

Power Connector

The power connector is a removable terminal block with four terminals. From top to bottom the terminals are:

 

Terminal

Terminal

Connect to

Description

 

 

 

Number

Name

 

 

 

 

 

 

 

 

1

AC In

One side of AC power supply (if AC

 

 

 

 

 

power used)

24 VAC

 

 

 

 

 

 

 

 

2

AC In

Other side of AC power supply (if

 

 

 

 

 

 

 

 

AC power used)

 

 

 

 

 

 

 

 

 

 

1

 

Negative side of DC power supply

Internally, the chassis ground of the

 

 

 

 

DC GND

(if DC power used)

 

 

 

 

Server is connected to this terminal.

 

 

 

 

 

 

 

 

 

 

 

 

2

DC power

Positive side of DC power supply (if

+12VDC to 30 VDC

 

 

 

 

supply

DC power used)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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Vlinx ESR90xW Hardware

RS-485Receiver Biasing

Vlinx ESR90xW wireless serial servers provide built-inreceiver biasing onRS-485ports (includes the 902W485 port, 902W Port 2 and 904W Ports 2 and 4). The Data(+) line is pulled up to 3.3V supply using a 4.7 kΩ resistor and theData(-)line is pulled down to ground, also using a 4.7 kΩ resistor.

RS-422/485Terminating

If a terminating resistor is deemed necessary, for RS-422operation typically a 120 Ω resistor would be connected across the Receive Data(+) and ReceiveData(-)lines. ForRS-485operation the resistor would be connected across the Data(+) andData(-)lines.

For more information on Receiver Biasing and RS-422/485Terminating access the

B&B Electronics RS-422/485Application Note available atwww.bb-elec.com)

Connections for Server Configuration

Vlinx ESR90xW Wireless Serial Servers can be configured via:

A wired connection to a RJ-45Ethernet connector on the ESR90xW front panel.

The wireless network

The wired connection is recommended for configuration, especially when configuring wireless settings, to ensure communication is not lost while changing settings.

Figure 6. Wired Connection for Configuration

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Documentation Number: ESR90xW-4905m

B&B Electronics Mfg Co Inc – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100- Fax815-433-5104www.bb-elec.com B&B Electronics Ltd – Westlink Commercial Park – Oranmore, Galway, Ireland – Ph +35391-792444– Fax +35391-792445www.bb-europe.com

B&B Electronics Mfg Co Inc – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100- Fax815-433-5104www.bb-elec.com B&B Electronics Ltd – Westlink Commercial Park – Oranmore, Galway, Ireland – Ph +35391-792444– Fax +35391-792445www.bb-europe.com