B&B Electronics MESR424T, MESR424D-MT, MESR424D-SC Datasheet

MESR424_r000_2913ds

MESR MODBUS Gateways bridge devices on MODBUS serial
networks (RS-232, RS-422 or RS-485) with those on MODBUS
TCP networks, allowing seamless integration. The serial ports can
be accessed over a LAN or WAN using Direct IP Mode
connections. Supporting up to 16 masters and 32 slaves, the
gateways feature autodetecting10/100 copper and fiber optic
options. The easy to use software is designed for Win XP, Vista,
Win 7 and Windows 2003/2008 Server, features Modbus
messaging priority control and allows management through multiple
TCP/IP client sessions. Serial data rates up to 230 kbps ensure
maximum network flexibility. MESR gateways are built for use in
industrial environments, featuring a slim IP30 DIN rail mountable
case. They operate from a range of DC power supply voltages and
have pluggable terminal block connectors.

MESR424 series gateways can be powered via a barrel connector
or a terminal block. (An external power supply is required; sold
separately.) The MESR424 has an additional Ethernet port which
functions much like an Ethernet Switch, allowing pass-through
connectivity for other Ethernet devices. This port can also be used
to “daisy chain” multiple gateways.

Specifications

Power

Source

External

Input Voltage

10 to 48 VDC (58 VDC max)

Connector

Removable Terminal Block (12 – 28
AWG) and barrel connector

Power Consumption

6 W

Mechanical

LED Indicators

Serial Port, Ethernet Link, Speed

Switches

Reset Button

Dimensions

1.8 x 4.4 x 6.75 in (4.57 x 12.2 x 17.1
cm)

Enclosure

35mm DIN mount, Metal, IP 30

Environmental

Operating Temperature

-40 to 80°C (-40 to 176° F)

Operating Humidity

10 to 95% Non-condensing

Storage Temperature

-40 to 85°C

MTBF

70,273 hours

MTBF Calc Method

Parts Count Reliability Prediction

NEMA TS1 & TS2

Complies with NEMA TS1 & TS2
Environmental requirements for Traffic
Control Equipment

Network

Serial Memory

8 KB per port

Network Memory

8 KB

IP Port Addresses

Setting in TCP Mode
8899 – MESR424 Update

LAN

10/100 Mbps Auto-detecting , 10BaseT
or 100BaseTX

Ethernet

IEEE 802.3 auto detecting & auto
MDI/MDX, 10/100

Ordering Information

See chart below for available models

Accessories

MDR-40-24

Din Rail Mount, 24VDC, 40 W

PS12VLB-INT-MED

12 VDC, Locking Barrel

232NM9

Null Modem Crossover Cable

C5UMB7FBG

Ethernet Cable

MESR424

4-Port Industrial Modbus Gateway

 Ethernet-Enable Modbus RS-232/422/485
 MODBUS TCP, ASCII & RTU
 Modbus Flexibility – Serial & Ethernet,

Masters & Slaves

 Modbus Messaging Priority Control
 View Messaging Status in Real Time
 Ethernet Fiber Options
 Easy Configuration Software
 Complies with NEMA TS1 & TS2

Environmental requirements for Traffic
Control Equipment

www.bb-elec.com [e-mail] [e-mail]

International Office: 707 Dayton Road PO Box 1040 Ottawa, IL, 61350, USA 815-433-5100 Fax [phone]

European Office: Westlink Commercial Park, Oranmore Co., Galway, Ireland [phone] Fax [phone]

Specifications

Serial Technology

RS-232 (DB9)
RS-232 (terminal block)
RS-485 2-Wire
RS-422/485 4-Wire
Serial Connector
Data Rate

TD, RD, DTR, DSR, RTS, CTS, DCD plus Signal Ground
TD, RD, RTS, CTS plus Signal Ground
Data A(-), Data B(+), GND
TDA(-), TDB(+), RDA(-), RDB(+), GND
DB9M or removable terminal blocks
Up to 230.4 Kbps

Fiber Optic Technology

Type / Wavelength
Output Power
Receive Sensitivity
Cable
Connector
Range

Multi-mode / 1310 nm
(-)19 to (-) 14 dBm
< (-) 32 dBm

62.5 / 125 µm
SC or ST

1.2 miles (2 km)

Single-mode / 1310 nm
(-) 15 to (-) 8 dBm
<(-) 32 dBm
9 / 125 µm
SC or ST

12.4 miles (20 km)

Protocols

Protocols
IP Mode
TCP

TCP, IPv4, UDP, ARP, HTTP 1.0, HTTP 1.1, ICMP/PING, DHCP/BOOTP
Static, DHCP
User definable

Other

Connection Mode
Search
Diagnostics
Firmware Upgrade

MODBUS RTU Master / Slave, MODBUS ASCII Master/Slave
Serial direct COM and Ethernet Auto Search or specific IP
Display PC IP, ping, save test config (text readable)
Web GUI through Ethernet

Software

OS Compatibility

Windows XP (32/64 bit), 2003 Server (32/64 bit), Vista (32/64 bit), 2008 Server (32/64 bit), Win 7
(32/64 bit), Windows 2008 Server

Ethernet Pass-through Port

Standards
Processing Type
Flow Control

IEEE 802.3, 802.3u, 802.3x
Store and Forward with 802.3x full duplex, non blocking flow control
IEEE 802.3x flow control, back pressure flow control

Approvals / Certifications

Emissions

FCC Part 15 Class A

CE NEMA TS2

Shock

IEC60068-2-27

Vibration

IEC60068-2-6

International Office: 707 Dayton Road PO Box 1040 Ottawa, IL, 61350, USA 815-433-5100 Fax [phone]

European Office: Westlink Commercial Park, Oranmore Co., Galway, Ireland [phone] Fax [phone]

www.bb-elec.com [e-mail] [e-mail]

Model Number

Ethernet Port 1

Ethernet Port 2

Serial Ports

MESR424D

10/100 RJ45

10/100 RJ45

RS-232/422/485 (DB9 male)

MESR424D-MT

10/100 RJ45

Multi-mode (ST)

RS-232/422/485 (DB9 male)

MESR424D-SC

10/100 RJ45

Single-mode (SC)

RS-232/422/485 (DB9 male)

MESR424T

10/100 RJ45

10/100 RJ45

RS-232/422/485 (Terminal Block)

MESR424T-MT

10/100 RJ45

Multi-mode (ST)

RS-232/422/485 (Terminal Block)

MESR424T-SC

10/100 RJ45

Single-mode (SC)

RS-232/422/485 (Terminal Block)

Ethernet Master and Serial Slaves

Your Modbus gateway can be used to integrate serial slave devices on a Modbus TCP network. This
allows TCP Masters to control serial slave devices. The example below is using a gateway with two
serial ports.

www.bb-elec.com [e-mail] [e-mail]

International Office: 707 Dayton Road PO Box 1040 Ottawa, IL, 61350, USA 815-433-5100 Fax [phone]

European Office: Westlink Commercial Park, Oranmore Co., Galway, Ireland [phone] Fax [phone]