B&B Electronics MESR424T, MESR424D-MT, MESR424D-SC Quick Start Guide

Product Overview

Power
10 - 48 VDC

LEDs

Fiber/Ethernet
Ports

LEDs

LEDs

Power

Ready

P (1 - 4)

RJ45 Ethernet Port LEDs

Speed

Link

1

Off Power is not connected
On Power is connected
Off System is in Console Mode
Blink System is in Normal Mode
Blink Data present on serial port

Off 10BaseT connection
On 100BaseTX connection
On Ethernet connected
Blink Data present on Ethernet port

Set Up Hardware

5. Click “Login”. Password is blank from factory.
No password is necessary to operate the MESR
unit. The Configuration/General page appears.

3

“I want DHCP” is preselected to set up the network
using dynamic IP addressing. The Gateway is set
up at the factory to receive an IP assignment from a
DHCP Server.

Set Up Network

Male DB9 Ports or
Terminal Block Ports

1. Power the device.

2. Connect the top RJ45 or optical connector
to a network drop using a standard network
cable. (The RJ45 ports on the model shown are
interchangeable. One may used for pass-through
Ethernet.)

3. Connect the Serial Device(s).
RS-232 with DB9: straight-through for DCE
device. Null modem for DTE device.
RS-422/485 with terminal blocks.

2

1. Use included CD to install Vlinx Modbus Gateway
Manager. If Autorun does not start, go to “My
Computer” and select the CD drive. You will see
a Vlinx MESR icon. Double-click it to launch the
installation.

2. To open Vlinx Modbus Gateway Manager: click
Start\Programs\B&B Electronics\Vlinx\Vlinx Modbus
Gateway Manager.
If the device does not connect, cycle (unplug-replug)
the power, then try again.

3. To configure via the network, select “Network”.

4. If you know the IP address, select “The device is
at this address,” and type in the IP address. If not,
select “I don’t know the IP address of the device.” Click
Connect.

(Alternative Method: Open a web browser and type
the IP address of the Gateway in the Address Bar.
When the Gateway is found the Login window will
appear.)

Install/Setup

1. If a DHCP Server is not available on your network,
it will default to 169.254.102.39.

2. If a DHCP server is not available and the default
address does not work on your PC, change your PC
network settings to IP Address: 169.254.102.1, Subnet
Mask: 255.255.0.0, Default Gateway: 169.254.1.1.

If you are not able to use these settings in your
installation, refer to the User’s Manual for directions to
change the Gateway’s TCP/IP settings.

4

Note: The Vlinx Modbus Gateway Manager
software contains default parameter values that
are common to most Modbus networks.

TCP Settings:

“Connect to port” identifies TCP port used in TCP
client mode. Valid range is 1 to 65535. Default is

502.
Response timeout is the maximum response time.
Valid range is from 1 to 65535. Default is 100ms.

TCP Server Settings:

“Listen on port” identifies TCP port in TCP server
mode. Valid range is from 1 to 65535. Default is

502.
“Limit the number of connections” controls the number
of simultaneous TCP clients that can be connected.
Connection Filter Mode options like “allow everyone,”
“allow specific IP address” and “allow a range of IP
addresses” control which TCP clients can connect.

If You Wish to Set Up TCP

Troubleshooting

The primary check for correct operation is the
device LEDs.

For advanced information, see the Configuration
Manager menu, at the top of Vlinx Modbus
Gateway screen.

Select Diagnostic for a check of
communications status with attached MESR424
device, and then select the device for which the
communications check is desired. A report of
reply times and ping statistics is generated and
can be saved.

Select Monitor to review activity logs of
attached MESR424 devices, then select the
device for which logged information is needed.

Recommended Accessories

PS12BVLB-INT-MED

Power Supply
http://www.bb-elec.com/Products/Power-
Supplies-Accessories/Wall-Transformer-
Power-Supplies/Power-Supplies.aspx

DFMM-LCLC

Fiber Cable
http://www.bb-elec.com/Products/Power-
Supplies-Accessories/Fiber-Optic-Cables/
Multi-mode-Fiber-Optic-Patch-Cables.aspx

232NM9

Null Modem Crossover Cable for DTE to
DTE connection
http://www.bb-elec.com/Products/Power­Supplies-Accessories/Serial-Cables/Null­Modem.aspx

MESR424

Q
S
G

uick
tart
uide

Logged information includes Time, Source &
Destination, Type of Event, Subscriber
ID, Data Collected, and Information the

Vlinx Modbus Gateway Manager program has
gathered since current login of the affected
device.

Mode Switch Result

Hold in for 0 - 2 seconds Initiates a Hardware Reset

Hold in for 2 - 10 seconds Enters Console Mode

Hold in for over 10 seconds Reset to factory defaults

Document number – pn9800_R000_MESR424_4312qsg

Fast Easy Answers

You can use your
smart phone to
access complete
documentation
on our website. Simply
scan the code to the
right.

1-888-948-2248 | Europe: [phone]

www.bb-elec.com

707 Dayton Road | PO Box 1040 | Ottawa, IL 61350

Phone: [phone] | Fax: [phone]
www.bb-elec.com | E-mail: [e-mail]

© 2012 B&B Elect ronics Manufacturing Company

Industrial MODBUS

Ethernet to Serial Gateways

First Things First...

Before you begin, be sure you have
the following:

MESR424

CD with software and manuals

Mounting accessories kit

Additional items required but not included:

Ethernet cable(s)
Null modem cable(s)
Power Supply for terminal block
or barrel connector

Fast and easy on the web:

www.bb-elec.com