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IMG-120T

Industrial 2-port RS422/485 Modbus Gateway

Economical Solution for Industrial Modbus TCP/RTU/ASCII Network Integration

PLANET has added the Industrial Modbus TCP/IP Protocol to its IMG-120T Industrial-

level 2-port RS422/485 Modbus Gateway, an industrial management level product that

comes with SCADA/HMI system and other data acquisition systems on the factory oor.

Moreover, an industrial IT SNMP network can be upgraded to an Industrial automation

Modbus TCP/IP network without any difficulty and extra expense. The IMG-120T offers

a flexible network connectivity solution for industrial automation environment. PLANET

IMG-120T is a conversion bridge between Modbus TCP/IP Protocol and Modbus RTU/

ASCII Protocol. It features a wide operating temperature range from -40 to 75 degrees C

and a compact but rugged IP40 metal housing.

The Conversion Bridge that Makes Communications Convenient

As the conversion bridge, the IMG-120T communicates well between any industrial

equipment with the Modbus RTU/ASCII Protocol and the administrator workstation that

runs the Modbus TCP/IP Protocol. The RS422/485 serial interface of the IMG-120T

provides the Modbus RTU/ASCII operation mode and various baud rate options to meet

the demand of integration between the Modbus TCP/IP Protocol, Modbus RTU Master/

Slave Protocol and Modbus ASCII Master/Slave Protocol.

Serial Interface

• Two RS422/485 ports with 5-contact terminal block

• Cost effective for RS422/RS485 to Fast Ethernet 10/100BASE-

TX application

• Supports 4-wire RS422 or 2-wire RS485 with 5-contact terminal

block

• 300bps~115200bps baud rate and non-blocking communication

Ethernet Interface

• Complies with IEEE 802.3, IEEE 802.3u 10/100BASE-TX

standard

• Supports 10/100BASE-TX RJ45 port with distance up to 100m

Management Function

• Built-in IP-based Web interface and telnet interface for remote

management

• Software Protocol supports Modbus TCP, Modbus RTU,

Modbus ASCII, IP, ARP, DHCP and DNS

• Supports RTU Master, RTU Slave, ASCII Master, and ASCII

Slave modes via management interface

• Master mode supports 32 slave TCP connection requests

• Slave mode supports 16 TCP master connections

• Supports IP address and MAC address ltering function

• PLANET Modbus Gateway utility for nding client device on

the network and related IP subnet address setting, to reset to

factory default function

• PLANET Smart Discovery utility automatically nds the client

devices on the network

• Firmware upgrade/conguration backup and restore via HTTP

protocol

Hardware

• LED indicators for system, network and RS422/485 port

diagnostics

• DIP switch on the upper panel for resetting to factory default

• Wall-mount kit

Industrial Case and Installation

• Wallmount-type IP40 metal case

• The 2-contact terminal block connector on the top panel of

Industrial Modbus Gateway is used for DC power input (9-48V)

• -40 to 75 degrees C operating temperature

Summary of content (5 pages)

PAGE 1
IMG-120T Industrial 2-port RS422/485 Modbus Gateway Serial Interface • Two RS422/485 ports with 5-contact terminal block • Cost effective for RS422/RS485 to Fast Ethernet 10/100BASETX application • Supports 4-wire RS422 or 2-wire RS485 with 5-contact terminal block • 300bps~115200bps baud rate and non-blocking communication Ethernet Interface • Complies with IEEE 802.3, IEEE 802.
PAGE 2
IMG-120T Industrial Modbus Environment IMG-120T Modbus TCP/IP Ethernet V+ Modbus TCP/IP Reset Serial Cable Industrial Modbus 10/100TX UTP RS422/RS485 10/100TX Gateway Industrial Equipment RS422/RS485 TX1 RX1 TX2 RX2 PWR LNK/ ACT IMG-120T RTU Slave ASCII Slave 16 TCP Masters GND GND R+ COM2 T+/D+ T+/D+ COM1 R+ Workstation with SCADA RTU Master ASCII Master 32 TCP Slaves The advantage of having the IMG-120T is to assist users to build an industrial environment between the Modb
PAGE 3
IMG-120T Applications RTU/ASCII Master to Multi Modbus TCP/IP Slaves The IMG-120T can act as a bridge between the industrial RTU/ASCII master equipment and the multi-industrial TCP/IP slave equipment in a Modbus TCP/IP networking environment to control multi-industrial TCP/IP slave equipment via the industrial RTU/ASCII master equipment.
PAGE 4
IMG-120T Specifications Product IMG-120T Serial Port Interface RS422/RS485 x 2 Connector 10-contact terminal block for RS422/RS485 Surge Protection 1KV Baud Rate (Data Rate) 300bps to 115200bps Data Bits 7, 8 Parity Type Odd, Even, None, Space, Mark Stop Bit Flow Control 1, 2 H/W, None Signals RS422: Tx+, Tx-, GND, Rx+, RxRS485: Data A (+), GND, Data B (-) Distance RS422/RS485 for 20m transfer distance Operation Mode RTU Master/RTU Slave/ASCII Master/ASCII Slave Master mode: Supports u
PAGE 5
IMG-120T Ordering Information IMG-120T Industrial 2-port RS422/485 Modbus Gateway Related Products IMG-110T Industrial 1-port RS422/485 Modbus Gateway ICS-100 RS-232 / RS-422 / RS-485 over Fast Ethernet Media Converter ICS-2100 Industrial RS-232/ RS-422/ RS-485 over Ethernet Media Converter PWR-40-24 / PWR-60-24 / PWR-75-24 DC Single Output Industrial DIN Rail Power Supply Units PLANET Technology Corporation 11F., No.96, Minquan Rd., Xindian Dist., New Taipei City 231, Taiwan (R.O.C.