B&B Electronics Vlinx MESR9xx User manual

Manual Documentation Number MESR9xx-4508m
www.bb-elec.com
www.bb-europe.com
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Manual Documentation Number MESR9xx-4508m
www.bb-elec.com
www.bb-europe.com
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In nt te er rn na at ti io on na al l H He ea ad dq qu ua ar rt te er rs s
B&B Electronics Mfg. Co. Inc.
707 Dayton Road
Ottawa, IL 61350 USA
Phone [phone] -- General Fax [phone]
Website: www.bb-elec.com
European Headquarters
B&B Electronics Ltd.
Westlink Commercial Park
Oranmore, Co. Galway, Ireland
Phone [phone] -- Fax [phone]
Website: www.bb-europe.com
Revision – Original – October 2008
©2008 B&B Electronics Mfg. Co. Inc. 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 Mfg. Co. Inc.
B&B Electronics Mfg. Co. Inc. 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
p
ublication is for reference purposes only and does not constitute an endorsement by the trademark holder.

Table of Contents
Page i Manual Documentation Number MESR9xx-4508m
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Ta ab bl le e o of f C Co on nt te en nt ts s
1. Introduction.......................................................................................................................................................1
About MESR9xx Modbus Gateways..........................................................................................................................................1
MESR9xx Modbus Gateway Model Numbering.........................................................................................................................2
List of MESR9xx Modbus Gateway Models...............................................................................................................................3
MESR9xx Modbus Gateway Features.......................................................................................................................................4
Vlinx Manager Configuration Software.......................................................................................................................................5
2. MESR9xx Modbus Gateway Hardware............................................................................................................6
Package Checklist......................................................................................................................................................................6
MESR9xx Modbus Gateway Enclosures and Mounting.............................................................................................................6
LED Indicators............................................................................................................................................................................7
E1/E2 Ethernet Link LED .............................................................................................................................................. 7
Ready LED..................................................................................................................................................................... 7
Serial Port LEDs............................................................................................................................................................ 7
Mode Switch...............................................................................................................................................................................8
Ethernet Connector....................................................................................................................................................................8
Fiberoptic Connectors................................................................................................................................................................9
Serial Port Connectors...............................................................................................................................................................9
Power Connector .....................................................................................................................................................................10
Mounting Hardware..................................................................................................................................................................10
3. Modbus Gateway Setup and Connections ...................................................................................................12
Connecting the Power Supply..................................................................................................................................................12
Connecting MESR9xx Modbus Gateways to Modbus networks..............................................................................................12
Connecting the MESR901-x......................................................................................................................................... 13
Connecting the MESR902T-x....................................................................................................................................... 14
Connecting the MESR902D-x ...................................................................................................................................... 14
Connecting MESR9xx Modbus Gateways to a Network..........................................................................................................15
Network Connection (10BaseT/100BaseTX)................................................................................................................ 15
Fiberoptic Connection ................................................................................................................................................. 15
MESR9xx Modbus Gateway Configuration Connections.........................................................................................................15
Configuring the MESR9xx Modbus Gateway via the Network Connection.................................................................. 16
Configuring the MESR9xx Modbus Gateway via the Serial Port (Console Mode) ...................................................... 17
MESR9xx Modbus Gateway Operational Connections............................................................................................................18
Using MESR9xx Modbus Gateways in Direct IP Mode............................................................................................... 18
Initiating a Hardware Reset on the Modbus Gateway..............................................................................................................19
Reloading Factory Defaults......................................................................................................................................................20
4. Description, Modbus Gateway Properties....................................................................................................21
Attached...................................................................................................................................................................................21
Baud Rate ................................................................................................................................................................................21
Character Timeout ...................................................................................................................................................................21
Configuration Files...................................................................................................................................................................21
Data/Parity/Stop.......................................................................................................................................................................22
Default Gateway.......................................................................................................................................................................22
DHCP.......................................................................................................................................................................................22
Firmware Version.....................................................................................................................................................................23
Hardware Version ....................................................................................................................................................................23
ID Routing ................................................................................................................................................................................23
IP Address................................................................................................................................................................................23
Link Status ...............................................................................................................................................................................24
MAC Address...........................................................................................................................................................................24
Modbus Priority........................................................................................................................................................................24
Modbus Serial Retries..............................................................................................................................................................24
Modbus ASCII..........................................................................................................................................................................25
Modbus Message Buffering .....................................................................................................................................................25
Modbus Message Timeout.......................................................................................................................................................25

Table of Contents
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Modbus RTU Message ............................................................................................................................................................25
Modbus Serial Control..............................................................................................................................................................25
Modbus TCP Message.............................................................................................................................................................26
Model .......................................................................................................................................................................................26
Network Mode..........................................................................................................................................................................26
Network Protocols....................................................................................................................................................................26
Password .................................................................................................................................................................................27
Port# ID Remap .......................................................................................................................................................................27
Serial Interface Modes.............................................................................................................................................................27
Modbus Gateway Name...........................................................................................................................................................28
Gateway Serial Port Number ...................................................................................................................................................28
Subnet Mask............................................................................................................................................................................28
TCP (Transmission Control Protocol) ......................................................................................................................................29
5. Upgrading the Modbus Gateway Firmware ..................................................................................................30
Downloading Firmware Files....................................................................................................................................................31
Uploading the Firmware to the Modbus Gateway....................................................................................................................31
6. Diagnostics .....................................................................................................................................................33
Testing a Modbus Gateway Connection..................................................................................................................................33
7. Application Examples.....................................................................................................................................35
From Serial Master to Modbus Gateway, Slave IDs Configurable...........................................................................................35
From Serial Masters To Ethernet Master, Slave IDs Fixed......................................................................................................36
Keep Serial Master, Add Ethernet Master(s) ...........................................................................................................................36
Modbus RTU, ASCII, and TCP Integration ..............................................................................................................................37
8. Modbus Help ...................................................................................................................................................38
Modbus ASCII/RTU Basics......................................................................................................................................................38
Hints and Tips..........................................................................................................................................................................39
9. Appendices .....................................................................................................................................................40
Appendix A: Default Gateway Settings....................................................................................................................................41
Appendix B: Product Specifications.........................................................................................................................................42
General Specifications................................................................................................................................................. 43
Controls, Indicators and Connector Specifications...................................................................................................... 44
Serial Interface Specifications ..................................................................................................................................... 45
Network Specifications................................................................................................................................................. 46
Appendix C: Dimensional Diagrams ........................................................................................................................................47
Appendix D: Connector Pinouts...............................................................................................................................................51
MESR901-x Serial Port Pinouts................................................................................................................................... 51
MESR902D-x Serial Port Pinouts................................................................................................................................ 53
MESR902T-x Serial Port Pinouts................................................................................................................................. 54
Standard Ethernet Cable RJ-45 Pin-out....................................................................................................................... 55
10. Glossary ..........................................................................................................................................................56

1. Introduction Vlinx MESR9xx Modbus Gateway
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1. . I In nt tr ro od du uc ct ti io on n
Thank you for purchasing a MESR9xx Modbus Gateway product! This product has been
manufactured to the highest standards of quality and performance to ensure your
complete satisfaction.
Figure 1. An MESR921 Modbus Gateway
About MESR9xx Modbus Gateways
MESR9xx Modbus Gatewaysconnect Modbus networks (RS-232, RS-422 or RS-485)
to Ethernet networks, allowing the Modbus network to become a node on the network.
The serial ports can be accessed over a LAN/WAN using Direct IP Mode connections.
MESR9xx Modbus Gatewaysfeature 10BaseT or 100BaseTX copper network media and
fiber optic media options, depending on the model. MESR9xx Modbus Gateways are
built for use in industrial environments, featuring an IP30 approved slim line DIN rail
mountable case. They operate from a range of DC power supply voltages and feature
pluggable terminal block power connectors. An external power supply, sold separately, is
required. The photograph above is an MESR921 gateway. The MESR92x units have an
additional Ethernet port which functions much like an Ethernet Switch. MESR90x units
have one Ethernet port.

1. Introduction Vlinx MESR9xx Modbus Gateway
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MESR9xx Modbus Gateway Model Numbering
MESR9xx Modbus Gatewaysare a growing family of products. Models are available
with one or two serial connections. Network connection options include
10BaseT/100BaseTX copper or several different fiber optic options. The following
diagram shows the model numbering scheme:

1. Introduction Vlinx MESR9xx Modbus Gateway
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List of MESR9xx Modbus Gateway Models
The following table lists the various MESR9xx Modbus Gateway models available.
Model Number Features
MESR922T 2 RJ45 Copper, 2 port MEI with TB
MESR922T-MT 1 Multi-mode ST, 1 RJ45 Copper, 2 port MEI with TB
MESR922T-MC 1 Multi-mode SC, 1 RJ45 Copper, 2 port MEI with TB
MESR922T-ST 1 Single-mode ST, 1 RJ45 Copper, 2 port MEI with TB
MESR922T-SC 1 Single-mode SC, 1 RJ45 Copper, 2 port MEI with TB
MESR922T-ST40 1 Single-mode 40 Km ST, 1 RJ45 Copper, 2 port MEI with TB
MESR922T-SC40 1 Single-mode 40 Km SC, 1 RJ45 Copper, 2 port MEI with TB
MESR922T-ST80 1 Single-mode 80 Km ST, 1 RJ45 Copper, 2 port MEI with TB
MESR922T-SC80 1 Single-mode 80 Km SC, 1 RJ45 Copper, 2 port MEI with TB
MESR921 2 RJ45 Copper, 1 port MEI with TB/DB9 Male
MESR921-MT 1 Multi-mode ST, 1 RJ45 Copper, 1 port MEI with TB/DB9 Male
MESR921-MC 1 Multi-mode SC, 1 RJ45 Copper, 1 port MEI with TB/DB9 Male
MESR921-ST 1 Single-mode ST, 1 RJ45 Copper, 1 port MEI with TB/DB9 Male
MESR921-SC 1 Single-mode SC, 1 RJ45 Copper, 1 port MEI with TB/DB9 Male
MESR921-ST40 1 Single-mode 40 Km ST, 1 RJ45 Copper, 1 port MEI with TB/DB9 Male
MESR921-SC40 1 Single-mode 40 Km SC, 1 RJ45 Copper, 2 port MEI with DB9 Male
MESR921-ST80 1 Single-mode 80 Km ST, 1 RJ45 Copper, 1 port MEI with TB/DB9 Male
MESR921-SC80 1 Single-mode 80 Km SC, 1 RJ45 Copper, 1 port MEI with TB/DB9 Male
MESR902T 1 RJ45 Copper, 2 port MEI with TB
MESR902T-MT 1 Multi-mode ST, 2 port MEI with TB
MESR902T-MC 1 Multi-mode SC, 2 port MEI with TB
MESR902T-ST 1 Single-mode ST, 2 port MEI with TB
MESR902T-SC 1 Single-mode SC, 2 port MEI with TB
MESR902T-ST40 1 Single-mode 40 Km ST, 2 port MEI with TB

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Model Number Features
MESR902T-SC40 1 Single-mode 40 Km SC, 2 port MEI with TB
MESR902T-ST80 1 Single-mode 80 Km ST, 2 port MEI with TB
MESR902T-SC80 1 Single-mode 80 Km SC, 2 port MEI with TB
MESR901 1 RJ45 Copper, 1 port MEI with TB/DB9 Male
MESR901-MT 1 Multi-mode ST, 1 port MEI with TB/DB9 Male
MESR901-MC 1 Multi-mode SC, 1 port MEI with TB/DB9 Male
MESR901-ST 1 Single-mode ST, 1 port MEI with TB/DB9 Male
MESR901-SC 1 Single-mode SC, 1 port MEI with TB/DB9 Male
MESR901-ST40 1 Single-mode 40 Km ST, 1 port MEI with TB/DB9 Male
MESR901-SC40 1 Single-mode 40 Km SC, 2 port MEI with DB9 Male
MESR901-ST80 1 Single-mode 80 Km ST, 1 port MEI with TB/DB9 Male
MESR901-SC80 1 Single-mode 80 Km SC, 1 port MEI with TB/DB9 Male
MESR9xx Modbus Gateway Features
•Four series models
•MESR901-x (single serial port, single Ethernet Port)
•MESR902T-x (two serial ports with pluggable terminal blocks, single Ethernet
port)
•MESR921-x (single serial port, two Ethernet Ports)
•MESR922T-x (two serial ports with pluggable terminal blocks, two Ethernet
Ports)
•On models with two Ethernet Ports, the second port is an Ethernet pass-
through port. This port functions much like an unmanaged switch.
•Fiber models available for each of the above series
•Multi-interface serial ports
•DB-9M and pluggable terminal block serial port connector options
•All ports are software selectable as RS-232, RS-422 or RS-485 2- and 4-wire
•Configuration can be done via network or direct serial connection
•Slim line DIN rail mountable case
•Accepts DC power over a wide voltage range

1. Introduction Vlinx MESR9xx Modbus Gateway
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•10/100 Mbps Ethernet with Auto Selection, Auto MDI/MDIX
•LAN and WAN Communications
•TCP Client or Server operation - configurable
•Firmware Upload for future revisions/upgrades
•Software Support - Windows 2000/2003 Server/XP/Vista x32
•Configuration of Ethernet and serial port settings using Vlinx Manager software
Vlinx Manager Configuration Software
Vlinx Manager configuration software enables you to find connected Modbus gateways,
configure them, upgrade Modbus gateway firmware, and save/load configuration files. It
features a graphical user interface (GUI) that is convenient and easy to use.

2.Hardware Vlinx MESR9xx Modbus Gateway
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2. . M ME ES SR R9 9x xx x M Mo od db bu us s G Ga at te ew wa ay y H Ha ar rd dw wa ar re e
MESR9xx Modbus Gateways are enclosed in DIN rail mountable enclosures and feature
LED indicators, power, Ethernet and serial connectors and a recessed Mode switch.
Package Checklist
MESR9xx Modbus Gateways are shipped with the following items included:
•MESR9xx Modbus Gateway Module
•Quick Start Guide
•CD with User Manual, Quick Start Guide and firmware
MESR9xx Modbus Gateway Enclosures and Mounting
All MESR9xx Modbus Gateway models are built into similar enclosures. Modules are
DIN rail mountable. The MESR92x (shown below) enclosure is larger than the
MESR90x.See the specification table for dimensions.
Figure 2. Front View of an MESR921 Modbus Gateway