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, allow DIN-rail mounting, and offer built-in serial optical isolation 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 have simultaneous access to serial slaves.

Cascading Ethernet ports for easy wiring
Advanced models of the MGate MB3000 provide two Ethernet ports for easier network wiring. 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
MB3000 advanced models include 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 the demanding requirements of industrial applications.

Warning by relay output
Relay output is provided for Ethernet link and power input status. With relay output, maintenance engineers have an additional tool for better troubleshooting and maintenance.

Priority control for urgent commands (patent pending)
As Modbus networks increase in size and complexity, the lag time between commands and responses becomes a growing concern. MB3000 advanced models provide a priority control function for urgent commands, allowing users to force certain commands to obtain an immediate response. Different methods are available to define which commands receive priority, depending on your system's requirements.

Features

Easy configuration

Slave mode supports 16 TCP masters and 31/62 serial slaves at the same time

Master mode supports 32 TCP slaves at the same time

Supports emergency request tunnels, ensuring QoS control

Supports serial redirector

Embedded Modbus protocol analyzer

Redundant dual DC power inputs

Built-in Ethernet cascading ports for easy wiring

Specifications

LAN

Ethernet 10/100 Mbps, RJ45, Auto MDI/MDIX Protection Built-in 1.5 KV magnetic isolation

Serial Interface

Interface RS-232/422/485, software selectable No. of Ports MB3170, MB3170I: 1 MB3270, MB3270I: 2 Port Type MB3170/MB3170I - Male DB9 for RS-232, terminal block for RS-422/485 MB3270/MB3270I - Male DB9 Signals RS-232: TxD, RxD, RTS, CTS, DTR, DSR, DCD, GND RS-422: Tx+, Tx-, Rx+, Rx-, GND RS-485 (2-wire): Data+, Data-, GND RS-485 (4-wire): Rx+, Tx-, Rx+, GND Serial line protection 15 KV ESD for all signals

Serial Communication Parameters

Parity None, Even, Odd, Space, Mark Data bits 7, 8 Stop bit 1, 2 Flow control RTS/CTS, XON/XOFF Speed 50 to 921.6 Kbps

Software Features

Operation Modes RTU Slave, RTU Master, ASCII Slave, ASCII Master Utility MGate Manager Suite for Windows 98/ME/NT/2000/XP/2003/Vista Multi-master and multi-drop Master mode: 32 TCP slaves. Slave mode: 16 TCP masters, 32 request queue depth for each master.

Power Requirements

Power input 12 to 48 VDC Power connector terminal block Power Consumption MB3170: 400 mA @ 12 VDC, 130 mA @ 48 VDC MB3170I: 405 mA @ 12 VDC, 140 mA @ 48 VDC MB3270: 410 mA @ 12 VDC, 145 mA @ 48 VDC MB3270I: 470 mA @ 12 VDC, 150 mA @ 48 VDC Power line protection 1 KV Burst (EFT), EN61000-4-4 0.5 KV Surge, EN61000-4-5

Environmental

Operating Temperature 0 to 55 °C (32 to 131 °F), 5 to 95% RH (60) -40 to 75 °C (-40 to 167°F) for -T models Storage Temperature -20 to 85 °C (-4 to 185 °F), 5 to 95% RH

Regulatory Approvals

EMC CE: EN550022 Class A / EN550024 FCC: FCC Part 15 subpart B, Class A Safety TUV: EN60950-1 Shock: IEC60068-2-27 Freefall: IEC60068-2-23 Vibration: IEC60068-2-6 Warranty 5 years

Specification

Power Requirements
Power Consumption	MGate MB3170: 435 mA (max.) MGate MB3170I: 555 mA (max.) MGate MB3270: 435 mA (max.) MGate MB3270I: 510 mA (max.)
Input Voltage	12 to 48 VDC
Power Connector	Terminal block
Software
Utilities	MGate Manager for Windows 98/ME/NT/2000, Windows XP/2003/Vista/2008/7 x86/x64
Operation Modes	RTU Slave, RTU Master, ASCII Slave, ASCII Master
Multi-master and Multi-drop	Master mode: 32 TCP slaves Slave mode: 16 TCP masters (request queue 32-deep for each master)
Configuration Options	Web Console, Serial Console, Telnet Console, Windows Utility
Bonus Features	Smart Routing, Serial Redirection, Priority Control
Serial Communication Parameters
Flow Control	RTS/CTS, DTR/DSR (RS-232 only)
Data Bits	7, 8
Parity	None, Even, Odd, Space, Mark
Stop Bits	1, 2
Baudrate	50 bps to 921.6 Kbps
Ethernet Interface
Connector	8-pin RJ45
Speed	10/100 Mbps, Auto MDI/MDIX
Magnetic Isolation Protection	1.5 KV built-in
Number of Ports	2 (1 IP)
Environmental Limits
Operating Temperature	Standard Models: 0 to 55°C (32 to 131°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)
Physical Characteristics
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)
Housing	Plastic
Serial Interface
Connectors	MB3170/3170I: DB9 male for RS-232, Terminal block for RS-422/485 MB3270/3270I: DB9 male x 2
Serial Standards	RS-232/422/485, software selectable
RS-485 Data Direction Control	ADDC® (automatic data direction control)
ESD Protection	15 KV for all signals
Number of Ports	MB3170/3170I: 1 MB3270/3270I: 2
Pull High/Low Resistor for RS-485	1 KΩ, 150 KΩ
Terminator for RS-485	120 Ω
Reliability
MTBF (mean time between failures)	MGate MB3170: 210,794 hrs MGate MB3270: 125,234 hrs
Serial Signals
RS-485-4w	Tx+, Tx-, Rx+, Rx-, GND
RS-485-2w	Data+, Data-, GND
RS-422	Tx+, Tx-, Rx+, Rx-, GND
RS-232	TxD, RxD, RTS, CTS, DTR, DSR, DCD, GND
Standards and Certifications
EMI	EN 55022 Class A, FCC Part 15 Subpart B Class A
Safety	UL 60950-1, EN 60950-1
Hazardous Location	UL/cUL Class I Division 2 Groups A/B/C/D, ATEX Zone 2
Shock	IEC 60068-2-27
Vibration	IEC 60068-2-6
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, EN 61000-4-11, EN 61000-4-12
EMC	CE, FCC
Freefall	IEC 60068-2-23
Marine	DNV
Warranty
Warranty Period	5 years
Details	See www.moxa.com/warranty

Download DataSheet