All product specications are subject to change without notice.
www.advantech.com
Headquarters: 707 Dayton Rd, PO Box 1040 Ottawa, IL 61350 USA (815)433-5100 or (800)346-3119/Toll Free Fax (815)433-5104
European Ofce: Westlink Commercial Pk, Oranmore Co. Galway Ireland +353 91 792444 Fax +353 91 792445
orders@advantech-bb.com
eSales@advantech-bb.com
ACCESSORIES – sold separately
BB-MDR-20-24 - 24VDC, 1.0 A output power, DIN rail mount power supply
BB-MDR-40-24 - 24VDC, 1.7 A output power, DIN rail mount power supply
BB-DRPM25 - 35mm DIN Rail to Panel Mount Bracket, 25mm wide
BB-TBKT1 - Replacement Terminal Block - 2-position, 5.08mm, 8A, 30
BB-TBKT2 - Replacement Terminal Block - 5-position, 5.08mm, 8A, 30
ORDERING INFORMATION
MODEL NUMBER
SERIAL
PORTS
SERIAL
CONNECTOR+
ETHERNET
PORTS
ETHERNET
CONNECTOR
BB-MESR921-MT 1
DB9 or Terminal
Block
Multi-mode Fiber,
Copper
(1) ST, (1) RJ45
Industrial Modbus
Ethernet to Serial Gateway
Fiber Model BB-MESR921-MT
Model BB-MESR91-MT Modbus Gateway bridges devices on Modbus serial
networks (RS-232, RS-422 or RS-485) with those on Modbus TCP networks,
allowing seamless integration. Serial ports (DB9M or TB) can be accessed
over a LAN or WAN using Direct IP Mode connections. MM-ST ber or
copper Ethernet ports.
Supporting up to 16 masters and 32 slaves, the gateway features auto-
detecting 10/100 copper and ber optic options. Easy-to-use software is
designed for Windows 2000, 2003 Server, XP, Vista, 2008 Server, 7, 8, 10.
Serial data rates up to 230 kbps ensure maximum network exibility.
BB-MESR91-MT Modbus Gateway is built for use in industrial environments,
featuring a slim IP30 DIN rail mount case. It operatea from a range of DC
power supply voltages and has a pluggable terminal block connector. An
external power supply is required (not included, sold separately).
The unit has an additional Ethernet port that 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. Includes easy-to-
use conguration software.
FEATURES
+ All serial ports are software congurable for RS-232, RS-422, or RS-485.
Copper port options available. Contact B+B SmartWorx.
BB-MESR921-MT_Fiber_0420ds
• Bridge Modbus TCP Ethernet and RS-232/422/485 networks
• Modbus TCP, ASCII, RTU (up to 16 masters & 32 slaves)
• Data rate: up to 230.4 kbps
• -40 to +80 °C wide operating temperature range
• DIN rail mount, IP30 case
• 10-48 VDC input required (power supply not included, sold separately)
• Easy to use conguration software
• UL Class 1/Division 2
Headquarters: 707 Dayton Rd, PO Box 1040 Ottawa, IL 61350 USA (815)433-5100 or (800)346-3119/Toll Free Fax (815)433-5104
European Ofce: Westlink Commercial Pk, Oranmore Co. Galway Ireland +353 91 792444 Fax +353 91 792445
orders@advantech-bb.com
eSales@advantech-bb.com
ENVIRONMENTAL
Operating Temperature -40 to +80° C (-40 to +176 °F)
Operating Humidity 0 to 95% non-condensing
MEANTIME BETWEEN FAILURES (MTBF)
MTBF 102593 hours
MTBF Calculation Method 217F Parts Count Reliability Prediction
NETWORK
Serial Memory 8 KB per port
Network Memory 4 KB
IP Port Addresses
5300 – Heartbeat and Conguration.
Setting in TCP Mode (paired mode).
8899 – MESR921-MT Update.
LAN 10/100 Mbps auto-detecting
Ethernet IEEE 802.3 auto-detecting & auto MDI/MDX 10/100
PROTOCOLS
TCP, IPv4, ARP, HTTP 1.0, ICMP/PING, DHCP/BOOTP
IP Mode Static, DHCP
TCP User denable
OTHER
Mode
Modbus RTU Master / Slave
Modbus ASCII Master / Slave
Search
Serial direct COM and Ethernet.
Auto search or specic IP.
Diagnostics Display PC IP, ping, save test cong. (text readable)
Firmware Upgrade via Vlinx Manager
ETHERNET PASS-THROUGH PORT (BB-MESR92X)
Standards IEEE 802.3, 802.3u, 802.3x
Processing Type
Store & Forward with 802.3x full-duplex, non-blocking ow
control
Flow Control IEEE 802.3x ow control, back pressure ow control
MAC Address Table 2K
CONFIGURATION SOFTWARE
Vlinx Manager -
Windows O/S
2000, XP, 2003 Server, Vista, 2008 Server, 7, 8, 10 (32/64 bit)
REGULATORY/APPROVALS / DIRECTIVES/ STANDARDS
Compliance FCC, CE
UL
UL Listed
UL Class 1 Division 2 Groups A, B, C, D (HAZLOC)
CE - Directives
2014/30/EU - Electromagnetic Compatibility (EMC)
2011/65/EU amended by (EU) 2015/863 - Reduction of
Hazardous Substances (RoHS)
2012/19/EU - Waste Electrical and Electronic Equipment
(WEEE)
CE - Standards
EN 55032 Class B - Electromagnetic Compatibility of
Multimedia Equipment - Emission Requirements
EN 55024 - Information Technology Equipment - Immunity
Characteristics - Limits and Methods of Measurement (ITE)
SPECIFICATIONS
SERIAL TECHNOLOGY
RS-232 TD, RD, RTS, CTS, DTR, DSR, DTD, GND
RS-485 2-Wire Data A(-), Data B(+), GND
RS-422/485 4-Wire TDA(-), TDB(+), RDA(-), RDB(+), GND
Serial Connector DB9M or Removable Terminal Blocks, 12 to 28 AWG
Data Rate Up to 230.4 Kbps
FIBER OPTIC TECHNOLOGY
Type / Wavelength Multi-mode / 1310 nm
Output Power (-) 19 to (-) 14 dBm
Receive Sensitivity ~ (-) 32 dBm
Cable 62.5 / 125 µm
Connector ST
Range 2 km (1.2 mi)
POWER
Source External, required (not included, sold separately)
Input Voltage 10 to 48 VDC (58 VDC, maximum)
Connector Removable Terminal Block (12 to 28 AWG)
Power Comsumption 6.0 Watts
MECHANICAL
LED Indicators Serial Port, Ethernet Link, Ready
Switches Reset Button
Dimensions 14.86 x 10.11 x 2.96 cm (5.85 x 3.98 x 1.16 in)
Enclosure 35mm DIN mount, Plastic, IP30
Weight 201.4g (0.45 lb)
eDrawing Available on website
Industrial Modbus
Ethernet to Serial Gateway
Fiber Model BB-MESR921-MT