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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 four serial operation modes via management interface.

  • Description
  • Specification
  • Application

Standard Industrial Modbus TCP/RTU/ASCII Network Integration
PLANET has added the Industrial Modbus TCP/IP Protocol to its easily-integrated industrial management level products that come with SCADA/HMI system and other data acquisition systems on factory floors. Moreover, the industrial IT SNMP network is upgraded to the Industrial automation Modbus TCP/IP network. PLANET industrial management level products with the Modbus TCP/IP Protocol offer flexible network connectivity solutions for the industrial automation environment.
To complete the industrial automation environment application solution, PLANET has announced a first industrial level 1-port RS232/422/485 Modbus Gateway, IMG-2100T, a bridge that converts 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 IP30 metal housing.


A Conversion Bridge for Flexible Network Deployment
The IMG-2100T can be a conversion bridge between the equipment with the Modbus RTU/ASCII Protocol and the administrator workstations that run the Modbus TCP/IP Protocol. The RS232/422/485 serial interface of the IMG-2100T 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.

The advantage of having the IMG-2100T is to assist users to build an industrial environment between the Modbus TCP/IP Protocol and the Modbus RTU/ASCII Protocol easily, thus offering an application solution to the industrial control equipment without Ethernet ports and the industrial control equipment can only control through an industrial PC workstation or industrial control panel.
In addition, the effective integration solution of Modbus Ethernet devices, Modbus serial equipment or multi Modbus master / slave in an industrial hybrid network brings the following:

  • Master mode supports up to 32 TCP slave connection requests.
  • Slave mode supports up to 32 TCP master connections.

Remote Management
The IMG-2100T makes the connected industrial Modbus RTU/ASCII equipment become IP-based facilities and is able to connect to the Modbus TCP/IP network via its RS232/422/485 serial interface and 10/100BASE-TX RJ45 Ethernet port. It provides a remote web management and telnet Interface for efficient remote network management. The IMG-2100T also provides PLANET Modbus Gateway utility tool and supports PLANET Smart Discovery utility to help network administrator to easily get the current IP subnet address information or change the IP subnet address setting of the IMG-2100T.

Modbus Serial Port State Monitoring

The IMG-2100T shows the details of the total bytes transmitted and received on the RS232/422/485 serial interface, and the detailed total number of frames transmitted and received on the remote web/telnet management interface. This function allows network administrator to check the status and statistics of the IMG-2100T via the single RS232/422/485 serial interface.

Stable Performance in Hardened Environment Design
The IMG-2100T provides a high level of immunity against electromagnetic interference and heavy electrical surges which are usually found on plant floors or in curb-side traffic control cabinets. Its operating temperature ranging from -40 to 75 degrees C allows the IMG-2100T to be placed in almost any difficult environment.
The IMG-2100T is equipped with a compact IP30-rated metal case that allows wall mounting for efficient use of cabinet space. The IMG-2100T also provides an integrated power supply source with wide-ranging voltages (9 to 48V DC / 24V AC) ideally suitable for worldwide operation with high availability applications.

Dual Power Input for High Availability Network System
The IMG-2100T features a strong dual power input system with wide-ranging voltages (9V~48V DC / 24V AC) incorporated into customer’s automation network to enhance system reliability and uptime. In the example below, when Power Supply 1 fails to work, the hardware failover function will be activated automatically to keep powering the IMG-2100T via Power Supply 2 without any break of operation.


Serial Interface
Serial Ports1 x DB9 male for RS232
1 x 4-pin terminal block for RS422 / RS485
Serial StandardsRS232 / 4-wire RS422 or RS485 / 2-wire RS485
Baud Rate (Data Rate)50bps to 921Kbps
Data Bits5, 6, 7, 8
Parity Type1, 1.5, 2
Stop BitOdd, Even, None, Space, Mark
Flow ControlRTS/CTS and DTR/DSR (RS232 only)
SignalsRS232: TxD, RxD, RTS, CTS, DTR, DSR, DCD, GND
RS422: Tx+, Tx-, Rx+, Rx-, GND
4-wire RS485: Tx+, Tx-, Rx+, Rx-, GND
2-wire RS485: Data A (+), Data B (-), GND
Pin Assignment
Operation ModeRTU Master/RTU Slave/ASCII Master/ASCII Slave
Master mode: Supports up to 32 TCP slave connection requests
Slave mode: Supports up to 32 TCP master connection requests
Ethernet Interface
Ethernet Ports1 x RJ45
ESD Protection6KV
Surge Protection2KV
InstallationDIN-rail kit and wall-mount ear
EnclosureIP 30 metal
Dimensions (W x D x H)32 x 87.8 x 135 mm
LED IndicatorsSystem: Power 1, Power 2, Fault, SYS
TP Port: Link/Active
Serial Port: Tx and Rx
Power Requirements9~48V DC / 24V AC, redundant power with reverse polarity protection
Power ConsumptionFull Loading
9VDC: 0.35A (3.15 watts)
12VDC: 0.28A (3.36 watts)
24VDC: 0.12A (3 watts)
48VDC: 0.08A (3.84 watts)
ConnectorRemovable 6-pin terminal block for power input
Pin 1/2 for Power 1, Pin 3/4 for fault alarm, Pin 5/6 for Power 2
AlarmProvides one relay output for power failure
Alarm relay current carry ability: 1A @ DC 24V
Reset Button< 5 sec: System reboot
> 5 sec: Factory default
Management InterfacesWeb management
Telnet Console management
Windows-based VCOM Utility management
SNMPv1, v2c / SNMP Trap
UNI-NMS monitoring
PLANET Smart Discovery Utility
IP VersionIPv4 and IPv6
Operation ModeRTU Master
RTU Slave
ASCII Master
Virtual COM Utility Platform SupportsWindows-based only:
 Windows XP
 Windows Server 2003
 Windows 7
 Windows Server 2008
 Windows 8 (Must install the latest version of WinPcap)
 Windows Server 2012 (Must install the latest version of WinPcap)
 Windows 10
Fault AlarmRecord: System log / SNMP trap
SecurityAllow maximum 4 accessible IP address hosts/ranges
RFC1317 RS232-like MIB
Standards Conformances
Regulatory ComplianceFCC Part 15 Class A,
CE Certification Class A
Stability TestingIEC60068-2-32 (Free fall)
IEC60068-2-27 (Shock)
IEC60068-2-6 (Vibration)
StandardsIEEE 802.3 10BASE-T
IEEE 802.3u 100BASE-TX
RFC 791 IP
RFC 854 Telnet
RFC 1591 DNS (client only)
RFC 1908 SNMPv2c
RFC 2131 DHCP Client
RFC 2732 Format for Literal IPv6 Addresses in URL's
RFC 3315 DHCPv6 Client
RFC 3513 IPv6 Addressing Architecture
RFC 3596 DNSv6
RFC 4443 ICMPv6
EIA/TIA RS232/422/485
Regulatory ApprovalRoHS
Operating Temperature-40 ~ 75 degrees C
Storage Temperature-40 ~ 85 degrees C
Humidity5 ~ 95% (non-condensing)

RTU/ASCII Master to Multi Modbus TCP/IP Slaves
The IMG-2100T 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.


Multi Modbus TCP/IP Master to RTU/ASCII Slaves
The IMG-2100T can operate as a bridge between the multi-industrial TCP/IP master equipment and the industrial RTU/ASCII slave equipment in a Modbus TCP/IP networking environment to control the industrial RTU/ASCII slave equipment via the multi-industrial TCP/IP master equipment.

Ordering Information
IMG-2100T IP30 Industrial 1-Port RS232/RS422/RS485 Modbus Gateway (1 x 10/100TX, -40~75 degrees C)

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