MOXA MGate MB3270

2-port advanced serial-to-Ethernet Modbus gateways

The MB3170 and MB3270 are advanced Modbus gateways that provide maximum flexibility for integrating industrial Modbus networks of all types and sizes. They are designed to integrate Modbus TCP, ASCII, and RTU devices in almost any master and slave combination, including serial master to serial slave, or simultaneous serial and Ethernet masters. A special priority control feature allows urgent commands to obtain immediate response. All models are ruggedly constructed, are DIN-rail mountable, and offer built-in optical isolation for serial signals as an option.

Integration of TCP masters without alteration to Modbus RTU/ASCII network or software

The MB3270 can integrate Modbus TCP with Modbus RTU/ASCII,without modifying the existing Modbus RTU/ASCII architecture or software. With the serial redirector function, a serial master can maintain direct access to serial slave devices through a specially mapped serial port. This allows the serial and TCP masters to access serial slaves simultaneously.

Cascading Ethernet ports for easy wiring

Advanced models of the MGate™ MB3000 series have two Ethernet ports to make network wiring easier. Dual Ethernet ports allow users to string multiple Modbus gateways together using standard RJ45 Ethernet cables, eliminating the need for a separate Ethernet switch.

Redundant power inputs

Advanced models of the MB3000 series have dual power inputs for greater reliability. The power inputs allow simultaneous connections to two live DC power sources, so that continuous operation is provided even if one power source fails. The higher level of reliability makes these advanced Modbus gateways ideal for demanding industrial applications.

Warning by relay output

A relay output is provided for the Ethernet link and power input status. The relay output gives maintenance engineers an additional tool for troubleshooting and maintenance.

Priority control for urgent commands (Patented)

As Modbus networks increase in size and complexity, the lag time between commands and responses becomes a major concern. Advanced models of the MB3000 series provide a priority control function for urgent commands, allowing users to force certain commands to get an immediate response. Depending on your system’s requirements, different methods are available to define which commands receive priority.

Feature :

Features and Benefits 

• Configuration is exceptionally easy 
• Slave mode supports 16 TCP masters and up to 62 serial slaves at the same time
• Master mode supports 32 TCP slaves at the same time
• Emergency request tunnels ensure QoS control
• Serial redirector function provided
• Embedded Modbus protocol analyzer
• Redundant dual DC power inputs
• Built-in Ethernet cascading for easy wiring
• Supports Moxa’s MXview industrial network management software via the MXview Plug-in

* MGate MB3170/3270 Modbus gateway has received Taiwan Excellence and Good Design awards.

Diagram :

Specification :

• Ethernet Interface
Protocol	Modbus TCP
Number of Ports	2 (1 IP, Ethernet cascade)
Speed	10/100 Mbps, Auto MDI/MDIX
Connector	8-pin RJ45
Magnetic Isolation Protection	1.5 kV (built-in)
• Serial Interface
Protocol	Modbus RTU/ASCII Slave/Master
Number of Ports	MB3170/3170I: 1 MB3270/3270I: 2
Serial Standards	RS-232/422/485, software selectable
Connectors	MB3170/3170I: DB9 male for RS-232, terminal block for RS-422/485 MB3270/3270I: DB9 male x 2
ESD Protection	15 kV for all signals
RS-485 Data Direction Control	ADDC® (automatic data direction control)
Pull High/Low Resistor for RS-485	1 kΩ, 150 kΩ
Terminator for RS-485	120 Ω
• Serial Communication Parameters
Data Bits	7, 8
Stop Bits	1, 2
Parity	None, Even, Odd, Space, Mark
Flow Control	RTS/CTS, DTR/DSR (RS-232 only)
Baudrate	50 bps to 921.6 kbps
• Serial Signals
RS-232	TxD, RxD, RTS, CTS, DTR, DSR, DCD, GND
RS-422	Tx+, Tx-, Rx+, Rx-, GND
RS-485-4w	Tx+, Tx-, Rx+, Rx-, GND
RS-485-2w	Data+, Data-, GND
• Software
Configuration Options	Web Console, Serial Console, Telnet Console, Windows Utility
Utility	MGate Manager for Windows 2000/XP/2003/Vista/Server 2008/7/8 (x86/x64), Windows Server 2008 R2/2012 (x64)
Multi-master and Multi-drop	Master mode: 32 TCP slaves Slave mode: 16 TCP masters (request queue 32-deep for each master)
Support	Smart Routing, Serial Redirection, ProCOM, Priority Control, MXview, SNMP v1 (read only)
• Physical Characteristics
Housing	Plastic
Weight	MGate MB3170: 360 g MGate MB3270: 380 g
Dimensions	Without ears: 29 x 89.2 x 118.5 mm (1.14 x 3.51 x 4.67 in) With ears extended: 29 x 89.2 x 124.5 mm (1.14 x 3.51 x 4.90 in)
• Environmental Limits
Operating Temperature	Standard Models: 0 to 60°C (32 to 140°F) Wide Temp. Models: -40 to 75°C (-40 to 167°F)
Storage Temperature	-40 to 85°C (-40 to 185°F)
Ambient Relative Humidity	5 to 95% (non-condensing)
Altitude	Up to 2000 m (795 hPa), higher altitudes on demand
Note	Please contact Moxa if you require products guaranteed to function properly at higher altitudes.
• Power Requirements
Input Voltage	12 to 48 VDC
Power Connector	Terminal block
Power Consumption	MGate MB3170: 435 mA (max.) MGate MB3170I: 555 mA (max.) MGate MB3270: 435 mA (max.) MGate MB3270I: 510 mA (max.)
Relay Output	1 digital relay output to alarm (normal close): Current carrying capacity 1 A @ 30 VDC
• Standards and Certifications
Safety	UL 508, EN 60950-1
Hazardous Location	UL/cUL Class 1 Division 2 Groups A/B/C/D, ATEX Zone 2 Ex nA IIC T3 Gc, IECEx (-IEX model only)
EMC	CE, FCC
EMI	EN 55022 Class A, FCC Part 15 Subpart B Class A
EMS	EN 55024, EN 61000-4-2 (ESD) Level 3, EN 61000-4-3 (RS) Level 3, EN 61000-4-4 (EFT) Level 4, EN 61000-4-5 (Surge) Level 3, EN 61000-4-6 (CS) Level 3, EN 61000-4-8 (PFMF) Level 1, EN 61000-4-11
Marine	DNV
Shock	IEC 60068-2-27
Freefall	IEC 60068-2-32
Vibration	IEC 60068-2-6
• Reliability
MTBF (mean time between failures)	MGate MB3170: 210,794 hrs MGate MB3270: 125,234 hrs
• Warranty
Warranty Period	5 years
Details	See www.moxa.com/warranty