B&B Electronics ESR901, ESR904, ESR902 User Manual

0 (0)

RS-232/422/485

Multi-Interface Industrial

Ethernet Serial Servers

Models: ESR901, ESR902, ESR904

Manual Documentation Number: ESR90x-0508m

B&B Electronics Mfg Co Inc – 707 Dayton Rd - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104 – www.bb-elec.com

B&B Electronics Ltd – Westlink Commercial Park – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445 – www.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 +353 91-792444 -- Fax +353 91-792445

Website: www.bb-europe.com

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

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

© B&B Electronics – January 2008

Manual Documentation Number: ESR90x-0508m

B&B Electronics Mfg Co Inc – 707 Dayton Rd - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104 – www.bb-elec.com

B&B Electronics Ltd – Westlink Commercial Park – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445 – www.bb-europe.com

© 2008 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.

Manual Documentation Number: ESR90x-0508m

B&B Electronics Mfg Co Inc – 707 Dayton Rd - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104 – www.bb-elec.com

B&B Electronics Ltd – Westlink Commercial Park – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445 – www.bb-europe.com

Table of Contents

 

CHAPTER 1: INTRODUCTION..............................................................................

 

1

FEATURES..................................................................................................................

 

1

COMMUNICATION MODES .........................................................................................

 

3

Direct IP Mode .....................................................................................................

 

3

Virtual COM Mode ...............................................................................................

 

3

Paired Mode .........................................................................................................

 

3

Heart Beat.............................................................................................................

 

4

SERIAL SERVER QUICK START GUIDE .......................................................................

 

5

Hardware Setup ....................................................................................................

 

5

Software Installation.............................................................................................

 

5

Serial Server Configuration ..................................................................................

 

6

Install Virtual COM Ports on PC..........................................................................

 

7

Check Communications ........................................................................................

 

7

CHAPTER 2: MAKING THE HARDWARE CONNECTIONS ...........................

9

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

 

9

ESR90X INDICATORS, SWITCHES AND CONNECTORS ..............................................

 

10

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

 

10

Switches ..............................................................................................................

 

10

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

 

10

SERIAL SERVER/PORT OPERATIONAL MODES .........................................................

 

11

Default Mode ......................................................................................................

 

12

Console Mode .....................................................................................................

 

12

Upgrade Mode ....................................................................................................

 

12

RS-232 Mode.......................................................................................................

 

12

RS-422 Mode.......................................................................................................

 

13

RS-485H Mode....................................................................................................

 

13

RS-485F Mode ....................................................................................................

 

13

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

 

13

CHAPTER 3: INSTALLING THE VLINX SOFTWARE....................................

19

SOFTWARE INSTALLATION.......................................................................................

 

19

Automatic Installation.........................................................................................

 

19

Manual Installation.............................................................................................

 

19

Updating an Existing Installation .......................................................................

 

21

Opening the ESP Manager .................................................................................

 

22

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CHAPTER 4: USING ESP MANAGER.................................................................

 

23

 

HARDWARE SETUP ..................................................................................................

 

23

 

SOFTWARE SETUP....................................................................................................

 

24

 

SOFTWARE OVERVIEW ............................................................................................

 

25

 

Menus..................................................................................................................

 

25

 

Server Icons Pane ...............................................................................................

 

27

 

Serial Server / Virtual COM Lists.......................................................................

 

27

 

Status Bar............................................................................................................

 

28

 

SEARCH FOR SERVERS .............................................................................................

 

28

 

CONFIGURE SERVER PROPERTIES ............................................................................

 

29

CHAPTER 5: CONFIGURING THE SERIAL SERVER PROPERTIES..........

31

 

DESCRIPTION OF THE SERVER PROPERTIES ..............................................................

 

32

 

Server Name........................................................................................................

 

32

 

Serial Number .....................................................................................................

 

32

 

Password.............................................................................................................

 

32

 

DHCP .................................................................................................................

 

32

 

IP Address...........................................................................................................

 

33

 

Netmask...............................................................................................................

 

34

 

Gateway ..............................................................................................................

 

34

 

MAC Address ......................................................................................................

 

34

 

Version & Date ...................................................................................................

 

34

 

Link Status...........................................................................................................

 

34

 

Server Serial Port ...............................................................................................

 

34

 

Baud Rate............................................................................................................

 

34

 

Data/Parity/Stop .................................................................................................

 

34

 

Flow Control.......................................................................................................

 

35

 

TCP/UDP Protocol.............................................................................................

 

35

 

Serial Timeout.....................................................................................................

 

36

 

TCP Alive Timeout..............................................................................................

 

36

 

Connection Mode................................................................................................

 

36

 

Delimiter HEX 1 and Delimiter HEX 2...............................................................

 

36

 

Force Transmit....................................................................................................

 

37

 

Port Status...........................................................................................................

 

37

 

TCP/UDP Port....................................................................................................

 

37

 

Serial Port Mode.................................................................................................

 

37

 

Connection At .....................................................................................................

 

38

 

Max Connection..................................................................................................

 

38

 

Remote IP Address..............................................................................................

 

38

 

Update/Save ........................................................................................................

 

39

CHAPTER 6: INSTALLING VIRTUAL COM PORTS ......................................

41

 

VIRTUAL COM PORT INSTALLATION ......................................................................

 

41

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MATCHING THE SERIAL SERVER AND VIRTUAL COM PORT SETTINGS ...................

44

CHAPTER 7: REMOVING VIRTUAL COM PORTS.........................................

47

REMOVING THE VIRTUAL COM PORT WITH ESP MANAGER ...................................

47

REMOVING THE VIRTUAL COM PORT USING DEVICE MANAGER ............................

48

CHAPTER 8: UPGRADING THE SERIAL SERVER FIRMWARE.................

51

DOWNLOADING THE FIRMWARE ..............................................................................

 

51

UPGRADING VIA ESP MANAGER.............................................................................

 

51

Preparing the Software .......................................................................................

 

51

Upgrading the Firmware ....................................................................................

 

52

CHAPTER 9: USING CONSOLE MODE .............................................................

 

53

CONSOLE MODE SETUP ...........................................................................................

 

53

Navigating the Configuration Menus..................................................................

 

54

Using a Password ...............................................................................................

 

55

CHAPTER 10: USING THE WEB SERVER ........................................................

 

57

SETTING SERVER PROPERTIES .................................................................................

 

57

CHAPTER 11: USING TELNET............................................................................

 

61

CONFIGURATION USING TELNET .............................................................................

 

61

Navigating the Configuration Menu ...................................................................

 

63

CHAPTER 12: ESR90X TECHNICAL DATA......................................................

 

65

APPENDIX A: RS-232 CONNECTIONS...............................................................

 

70

SERIAL SERVER DB-9 PIN-OUTS IN RS-232 MODE..................................................

 

70

ESR901 TERMINAL BLOCK PIN-OUT IN RS-232 MODE

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

71

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

 

72

ESR90X DB-9 PIN-OUT IN RS-422 MODE ...............................................................

 

72

ESR901 TERMINAL BLOCK PIN-OUT IN RS-422 MODE

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

73

APPENDIX C: RS-485 CONNECTIONS...............................................................

 

74

ESR90X DB-9 PIN-OUT IN RS-485H (TWO-WIRE, HALF DUPLEX) MODE.................

74

ESR90X DB-9 PIN-OUT IN RS-485F (FOUR-WIRE, FULL DUPLEX) MODE ................

75

ESR901 TERMINAL BLOCK PIN-OUT IN RS-485F (FOUR-WIRE, FULL DUPLEX) MODE

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

 

76

APPENDIX D: NETWORK CONNECTIONS......................................................

 

77

STANDARD ETHERNET CABLE RJ-45 PIN-OUT.........................................................

 

77

CROSSOVER ETHERNET CABLE RJ-45 PIN-OUT .......................................................

 

78

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Introduction

Chapter 1: INTRODUCTION

VLINX ESR90x Industrial Ethernet Serial Servers allow connection of RS232, RS-422 or RS-485 devices to an Ethernet network. The serial ports can be accessed over a LAN/WAN using Direct IP Mode, Virtual COM Port, or Paired Mode connections. The 10/100 Mbps Ethernet connection autoselects 10BaseT or 100BaseTX and indicates the type of connection with a bi-color link light. ESR90x serial servers are built for use in industrial environments, featuring an IP30, approved slim line DIN rail mountable case. They operate from a range of AC or DC power supply voltages, support redundant DC power and feature terminal block power connectors.

Figure 1. VLINX ESR90x Ethernet Serial Servers

Features

Multi-interface serial ports

oThe ESR901 features one multi-interface serial port and the choice of standard DB-9M or removable terminal block connections (switch selectable)

o The ESR902 features two multi-interface serial ports o The ESR904 features four multi-interface serial ports

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Introduction

oAll ports are software selectable as RS-232, RS-422, RS-485 full duplex or RS-485 half duplex interfaces

oFor all models Port 1 is software, or DIP switch selectable for Console Mode operation (configuration via direct serial connection)

Slim line DIN rail mountable case

Accepts AC or DC power over a wide volt range

Redundant DC power supply input

10/100 Mbps Ethernet with Auto Selection

LAN and WAN Communications

TCP or UDP Client or Server operation - configurable

Software Support - Windows 98/ME/2000/2003/XP/ NT 4.0 and Vista

Firmware Upload for future revisions/upgrades

Configuration of Ethernet and serial port settings can be accomplished using any of four methods:

oVLINX ESP Manager Software for Windows allows configuration via a network connection or directly from the Ethernet port of a computer (using an Ethernet crossover cable).

oWeb Server allows configuration via the network using a web browser.

oTelnet allows configuration via the network by accessing the setup configuration menu.

oConsole Mode allows configuration through an RS-232 serial port in using a VT100 Terminal Emulation program and an RS232 crossover cable.

Virtual COM Driver Software for Windows - installs virtual COM ports, viewable in the Windows Device Manager under Ports (COM & LPT). Virtual COM port provides access to any of the ports on the Serial Server, like any other serial port (legacy, PCI, USB or PCMCIA) on the computer. Any program running on the computer and using Windowsbased COM ports can access the serial devices attached to the Serial Server. The LAN becomes transparent to the serial device and the software running on the PC.

Heart Beat Connection - selectable protocol ensures reliable communications in Virtual COM Port or Paired Connection modes. This feature restores the connections if communications are temporarily lost at either end due to loss of power or the Ethernet connection.

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– Fax +353 91-792445 – www.bb-europe.com

Introduction

Communication Modes

The ESR90x Serial servers enable communication with serial devices over a LAN or WAN. Serial devices no longer are limited to a physical connection to the PC COM port. They can be installed anywhere on the LAN using TCP/IP or UDP/IP communications. This allows traditional Windows PC software access to serial devices anywhere on the LAN/WAN network.

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 with the Serial Server. 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.

Virtual COM Mode

Install Virtual COM Mode allows the user to add a driver, to provide a virtual COM port on the computer. The new COM port shows up in the Device Manager. Windows programs using standard Windows API calls are able to interface to virtual COM ports. When a program on the PC opens the new COM 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.

To use this mode, the Serial Server must be set to either TCP/server or UDP/server with a designated communication port number. The virtual COM driver is the TCP or UDP client.

Paired Mode

Paired Mode is also called serial tunneling. In this mode any two serial devices that can communicate with a serial link will be able to communicate using two Serial Servers and the LAN.

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Introduction

Two Serial Servers are connected to a network, one 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-filtering feature 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.

Heart Beat

The Heart Beat protocol connection provides a reliable communications connection in Virtual COM Port Mode or with Paired Connection Mode. This feature restores the connection if communications are temporarily lost at either end due to loss of power or Ethernet connection.

Without this feature a device that loses a connection and stops communicating would not be able to reconnect without human intervention. A TCP data connection can be lost when there is a power failure or temporary loss of an Ethernet connection on either the client or server. If a loss occurs the Heart Beat feature will try to reconnect the TCP data connection every five seconds until communications is established again. The Heart Beat feature is available for use in Virtual COM Port Mode and Paired Connection Mode. This is not available when using a UDP application.

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Introduction

Serial Server Quick Start Guide

For descriptive purposes this Quick Start Guide considers a typical configuration consisting of a PC connected via an Ethernet LAN to an

ESR902 Serial Server connected to the RS-232 port of a serial device.

Hardware Setup

 

Ethernet

 

cable

 

LAN

Ethernet

ESR902

cable

 

PC

RS-232 cable

Serial Device

Figure 2. Typical Hardware Setup

Step 1: Connect the Serial Server to the network using a standard network cable.

Step 2: Connect the Serial Server to the RS-232 port on the serial device.

Note:

If the serial device is configured as a DCE use a straight-through serial cable. If the serial device is configured as a DTE use a crossover (null modem) cable.

Step 3: Set the Run/Console DIP switch to the Run position.

Step 4: Apply power to the Serial Server.

Software Installation

Using the CD included with the Serial Server, install the VLINX Manager software on the configuring computer.

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Introduction

Serial Server Configuration

Step 1: Open the ESP Manager software. It will automatically search for any reachable (ESP or ESR) Serial Servers. A list of all Serial Servers connected to the LAN will appear in the Serial Server List window.

Step 2: Double click the desired Serial Server port on the list to bring up the Server Properties configuration screen.

Figure 3. The Server Properties Window

Step 3: Change the Server Properties as required.

Enable DHCP to allow the Serial Server to generate its own IP address

OR

Obtain appropriate static IP, Netmask and Gateway addresses from your Network Administrator (recommended)

Set the Serial Port Mode property to RS-232 to match the serial device connected to the Serial Server.

Set Baud Rate, Data/Parity/Stop, and Flow Control to match the configuration of the serial device connected to the Serial Server port

Step 4: When the parameters have been set, click Update. Following the prompts in the dialogue boxes, Restart the Serial Server and

Search all reachable servers again.

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Introduction

Step 5: Re-enter Server Properties to verify the changes have taken effect, or to view/change the configuration of other ports. Each port must be configured separately.

Install Virtual COM Ports on PC

Step 1: From the Windows Start menu, run the Install Virtual COM Ports utility included with the VLINX software,

Step 2: Search for all servers on the network

Step 3: Select a port and map it to an unused COM port (e.g. Port 15). Configure it for TCP protocol and the appropriate IP address (determined in the last section).

Figure 4. Configuring the Virtual COM Port

Check Communications

Step 1: From the Windows Start menu, run HyperTerminal

Step 2: Configure HyperTerminal to connect using the COM port configured in the last section (e.g. Port 15).

Step 3: Set Baud Rate, Data/Parity/Stop, and Flow Control to match the configuration of the serial device connected to the Serial Server serial port.

Step 4: Communications with the serial device should now be operational.

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Introduction

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B&B Electronics ESR901, ESR904, ESR902 User Manual

Making the Hardware Connections

Chapter 2: MAKING THE HARDWARE

CONNECTIONS

Package Checklist

ESR90x Serial Servers are shipped with the following items included:

9Serial Server Module

9This Operation Manual

9CD-ROM disc with manual, VLINX ESP Manager and Virtual COM Driver software for Windows 98/ME/2000/2003/XP/NT 4.0/Vista

 

 

ESR901

 

 

ESR902

 

 

ESR904

 

 

GN D

 

 

GND

 

 

 

GN D

 

 

 

AC In

 

 

AC In

 

 

 

AC In

 

 

 

AC/DC+ In

 

 

AC/DC+ In

 

 

AC/DC+ In

 

 

Backup DC + In

 

 

Backup DC+ In

 

 

Backup DC + In

 

 

Voltage Range:

 

 

Voltage R ange:

 

 

Voltage Range:

Link

 

9-48VDC

Link

 

9-48VD C

 

Link

 

9-48VDC

 

 

8-24VAC

 

8-24VAC

 

 

8-24VAC

 

 

 

 

 

 

 

 

 

R eady

Power

 

Ready

Power

 

 

R eady

Power

 

 

Reset

 

 

Reset

 

 

 

Reset

 

 

 

Run

Console

 

 

 

 

 

 

 

 

DB9

Terminal

Run

Console

 

 

Run

Console

 

 

 

1

Ethernet

 

 

Ethernet

 

 

1

Ethernet

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

 

 

 

 

 

 

 

 

 

 

 

 

 

RX

TX

RX

TX

RX

TX

 

RX

TX

RX

TX

 

 

 

 

 

RS-232/422/485

 

 

 

 

 

 

 

 

 

 

1

 

 

 

 

 

 

 

 

 

G

 

 

 

 

 

 

 

 

 

C

ND

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

 

TS

 

 

 

 

 

2

 

 

 

T

/TX-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

X

 

 

 

 

 

 

 

 

 

 

/T

 

 

 

 

 

 

 

 

1

R

X+

 

 

 

1

 

 

 

 

 

 

 

 

 

 

 

 

 

X

 

2

 

 

 

 

 

 

 

/R

 

 

 

 

 

 

 

 

R

X+

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

T

 

 

 

 

 

 

 

 

 

 

S/

 

 

 

 

RX

TX

RX

TX

 

 

R

 

 

 

 

 

 

X-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4

 

 

3

 

 

 

 

 

 

 

 

 

 

Figure 5. Front View of the ESR901, ESR902 and ESR904

Serial Servers

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Making the Hardware Connections

ESR90x Indicators, Switches and Connectors

Indicators

One bi-color Link LED (Yellow = 10BaseT, Green = 100Base T)

One green Ready LED (flashing = system ready)

One red Power LED

One red RX LED and one green TX LED for each serial port

Switches

Reset

A recessed reset switch that allows the united to be reset. Insert a small plastic tool, press lightly and hold for three seconds. The Link and Ready lights will go out and then come back on.

Run/Console Switch

A recessed single DIP (dual inline package) switch that allows the Serial Server to be switched between Run Mode and Console Mode. When switched to the Console position the Serial Server enters Console Mode. This allows you to configure the Serial Server from a PC running a terminal program such as HyperTerminal without connecting the server to the network. To communicate with the connected serial device the switch must be returned to “Run” position.

DB-9/Terminal Switch (ESR901 only)

Allows connection to the serial port (RS-232, 422 or 485) via the DB-9M connector or the five-terminal removable terminal block.

Connectors

Ethernet Connector

One standard RJ-45 receptacle that allows the Serial Server to be connected to an Ethernet hub, switch, or wall plate using a standard straight-through RJ45 (male) Ethernet cable. To connect directly to an RJ-45 Ethernet port on a PC or laptop a crossover Ethernet cable must be used.

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Making the Hardware Connections

Serial Port(s)

ESR901: One serial port with two connector options: one (DB-9M) or one five-terminal removable terminal block (DIP switch selectable)

ESR902: Two serial port connectors (DB-9M)

ESR904: Four serial port connectors (DB-9M)

Note:

Refer to Appendices A, B and C for connection pin-outs.

Power Connector

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

Terminal

Connect to

Description

 

Negative side of DC

 

 

power supply (if DC

 

GND

power used)

Internally, the chassis ground of the Serial

Also connect negative

Server is connected to this terminal.

 

 

side of Backup DC

 

 

power supply (if used)

 

 

One side of AC power

 

AC In

supply (if AC power

 

 

used)

 

 

The other side of AC

Either AC or DC power can be used to

 

power supply (if AC

power ESR Serial Servers. Power supply can

AC/DC +

power used)

voltages range from 9 V to 48 VDC or 8 V

OR

to 24 VAC.

In

Positive side of DC

 

 

 

 

power supply (if DC

 

 

power used)

 

Backup

Positive side of

Backup power must be DC voltage and can

Backup DC power

DC+ In

be any voltage between 9 VDC and 48 VDC.

supply

 

 

Serial Server/Port Operational Modes

Using the ESP Manager, Web Server or Telnet the Serial Server can be put into Console Mode, Default Mode or Upgrade Mode. The serial ports can be configured for RS-232, RS-422, RS-485H (half duplex) or RS-485F (full duplex) operation. The server also can be put into Console Mode by placing the Run/Console switch in the Console position.

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Making the Hardware Connections

Default Mode

When Default Mode is selected and the server properties are Updated (Saved) all the configuration settings return to their default values.

Note:

Refer to Chapter 5 for details on Serial Server Configuration settings. See

Chapter 12 for Serial Server default parameters.

Console Mode

In Console Mode the Configuration Menu can be accessed from a PC by connecting its RS-232 serial port to the ESR901 serial port or ESR902/904 Serial Port 1. Since the computer is a DTE device, and the serial ports are configured as DTEs (with DB-9M connectors), a null modem crossover cable must be used.

In Console Mode the default serial port settings are: 9600 baud, 8 data bits, No parity, and 1 stop bit. From Windows, HyperTerminal with VT100 terminal emulation can be used for Console Mode configuration.

Note:

Refer to Chapter 9 for details on Console Mode

Upgrade Mode

In Upgrade Mode firmware can be uploaded from a PC via its serial port to the ESR901 serial port or ESR902/904 Serial Port 1. Upgrading also can be accomplished via the network connection, using the ESP Manager software and a virtual COM port.

Note:

Refer to Chapter 8 for details on Upgrade Mode

RS-232 Mode

In RS-232 Mode the currently selected serial port is configured as an RS-232 interface supporting eight RS-232 signal lines plus Signal Ground and is configured as a DTE, like a computer. Signals are single ended and referenced to Ground. To use handshaking, Flow Control must be set to RTS/CTS during configuration.

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B&B Electronics Mfg Co Inc – 707 Dayton Rd - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104 – www.bb-elec.com

B&B Electronics Ltd – Westlink Commercial Park – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445 – www.bb-europe.com

Making the Hardware Connections

RS-422 Mode

In RS-422 Mode the currently selected serial port is configured as an RS-422 interface supporting four RS-422 signal channels with full duplex operation for Receive, Transmit, RTS (Request To Send) and CTS (Clear To Send). The data lines are differential pairs (A & B) in which the B line is positive relative to the A line in the idle (mark) state. Ground provides a common mode reference. To use handshaking, Flow Control must be set to RTS/CTS during configuration.

RS-485H Mode

In RS-485H Mode the currently selected port is configured as a two-wire RS485 interface supporting DataB(+) and DataA(-) signal channels using halfduplex operation. The data lines are differential with the Data B line positive relative to Data A in the idle (mark) state. Ground provides a common mode reference.

RS-485F Mode

In RS-485F Mode the currently selected port is configured as a four-wire RS485 interface supporting transmit lines TXDB(+) and TXDA(-) and receive lines RXDB(+) and RXDA(-) for full duplex operation. The lines are differential with the B line positive relative to A in the idle (mark) state. Ground provides a common mode reference.

RS-485 Receiver Biasing

RS-485 Receiver Biasing can be implemented from the Serial Server if the network does not supply it. Remove the four screws from the cover of the Serial Server, slide the cover off and re-position the bias jumpers as indicated in the diagrams and tables below. Note that ESR Serial Servers provide separate jumpers for RS-485 half duplex and RS-422/485 full duplex operation. Also, the ESR901 provides separate jumpers for the terminal block and DB-9 connectors. Biasing jumpers are also provided for CTS inputs.

Manual Documentation Number: ESR90x-0508m

Chapter 2

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B&B Electronics Mfg Co Inc – 707 Dayton Rd - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104 – www.bb-elec.com

B&B Electronics Ltd – Westlink Commercial Park – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445 – www.bb-europe.com

Making the Hardware Connections

J7 J13 J6 J12

J5 J11J4 J10

J9 J3

Figure 6. ESR901 Bias Jumper Locations

Connector

Interface Type

Jumper

Pull up/pull down

Number

 

 

 

 

485 half duplex

J12

pull up

Terminal

J6

pull down

 

block

422/485 full duplex

J7

pull up

 

J13

pull down

 

 

 

485 half duplex

J3

pull up

 

J9

pull down

 

 

DB-9

422/485 full duplex

J5

pull up

J11

pull down

 

 

 

CTS

J4

pull up

 

J10

pull down

 

 

Figure 7. ESR901 Bias Jumpers

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Manual Documentation Number: ESR90x-0508m

B&B Electronics Mfg Co Inc – 707 Dayton Rd - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104 – www.bb-elec.com

B&B Electronics Ltd – Westlink Commercial Park – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445 – www.bb-europe.com

Making the Hardware Connections

J11 J16

 

J13 J3

J7

J6

J15

J9

 

 

 

 

 

 

 

 

J14

J4

 

 

 

 

 

 

J10

J2

 

 

Figure 8. ESR902 Bias Jumper Locations

Port

Interface Type

Jumper

Pull up/pull down

Number

 

 

 

 

485 half duplex

J2

pull up

 

J10

pull down

 

 

1

422/485 full duplex

J4

pull up

J14

pull down

 

 

 

CTS

J7

pull up

 

J6

pull down

 

 

 

485 half duplex

J9

pull up

 

J15

pull down

 

 

2

422/485 full duplex

J3

pull up

J13

pull down

 

 

 

CTS

J11

pull up

 

J16

pull down

 

 

Figure 9. ESR902 Bias Jumpers

Manual Documentation Number: ESR90x-0508m

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B&B Electronics Mfg Co Inc – 707 Dayton Rd - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104 – www.bb-elec.com

B&B Electronics Ltd – Westlink Commercial Park – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445 – www.bb-europe.com

Making the Hardware Connections

 

J9

J13

J14

J26J11

J16 J24

 

J28

 

 

J22

 

 

 

J12 J27

J10 J25

 

J7

J21

J20

J8

 

 

 

J19

 

J17

 

 

 

J6

J5 J18

 

J3

 

 

J2

 

 

Figure 10. ESR904 Bias Jumper Locations

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Chapter 2

Manual Documentation Number: ESR90x-0508m

B&B Electronics Mfg Co Inc – 707 Dayton Rd - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104 – www.bb-elec.com

B&B Electronics Ltd – Westlink Commercial Park – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445 – www.bb-europe.com

Making the Hardware Connections

Port

Interface Type

Jumper

Pull up/pull down

Number

 

 

 

 

485 half duplex

J22

pull up

 

J17

pull down

 

 

1

422/485 full duplex

J7

pull up

J21

pull down

 

 

 

CTS

J13

pull up

 

J9

pull down

 

 

 

485 half duplex

J3

pull up

 

J2

pull down

 

 

2

422/485 full duplex

J8

pull up

J20

pull down

 

 

 

CTS

J14

pull up

 

J28

pull down

 

 

 

485 half duplex

J12

pull up

 

J27

pull down

 

 

3

422/485 full duplex

J6

pull up

J19

pull down

 

 

 

CTS

J11

pull up

 

J26

pull down

 

 

 

485 half duplex

J16

pull up

 

J24

pull down

 

 

4

422/485 full duplex

J5

pull up

J18

pull down

 

 

 

CTS

J10

pull up

 

J25

pull down

 

 

Figure 11. ESR904 Bias Jumpers

Note:

(For more information on RS-485 Receiver Biasing, see B&B Electronics RS422/485 Application Note available at www.bb-elec.com)

Manual Documentation Number: ESR90x-0508m

Chapter 2

17

B&B Electronics Mfg Co Inc – 707 Dayton Rd - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104 – www.bb-elec.com

B&B Electronics Ltd – Westlink Commercial Park – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445 – www.bb-europe.com

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