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B&B Electronics MESR321_SL_ML - Quick Start Guide User Manual

Product overview, Set up network, Set up hardware

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Set Up Network

1

Set Up Hardware

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.

Product Overview

Power 10 - 48 VDC

If You Wish to Set Up TCP

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/Vlinx Serial Server 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.)

2

Install/Setup

“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.

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:

169.254.102.100.

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.

Note: The Vlinx Modbus Gateway Manager

software contains default parameter values that

are common to most Modbus networks.

1. 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.

2. 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.

5. Click “Login”. Password is blank from factory.

No password is necessary to operate the MESR

unit. The Configuration/General page appears.

Mode Switch

Fiber/Ethernet Ports

Male DB9 Port

Terminal Block Port

LEDs