Datasheet
MG-120
1
Standard Modbus TCP/RTU/ASCII Network Integration
PLANET MG-120 2-port RS232/422/485 Modbus Gateway supports the standard
Modbus Protocol, which makes it possible for converting any Modbus Protocols
between Modbus TCP, Modbus RTU, and Modbus ASCII for all supported
hardware interfaces. Its serial protocol can be used for industrial automation where
SCADA or HMI system is in place.
Moreover, its network integration can be upgraded from the SNMP network to the
automated Modbus TCP network, which brings interconnection over Ethernet longer
distances, thus making a network infrastructure more exible.
Serial Interface
• Two DB9 interfaces support RS232, 2-wire RS485, 4-wire
RS485 and RS422 standards
• Asynchronous serial data rates up to 921600bps
Ethernet Interface
• 1-port 10/100BASE-TX RJ45 with auto MDI/MDI-X function
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 four serial operation modes via management
interface
• Master mode supports 32 TCP slave connection requests
• Slave mode supports 32 TCP master connections
• PLANET Modbus Gateway utility for nding client device
on the network
• PLANET Smart Discovery utility automatically nds the
client devices on the network
• Firmware upgrade/conguration backup and restore via
HTTP protocol
Case and Installation
• -10 to 60 degrees C operating temperature
• Reset button for resetting to factory default
2-port RS232/422/485 Modbus Gateway
A Conversion Bridge for Flexible Network Deployment
The MG-120 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 MG-120 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.
RS485
RS232/RS422/RS485
MG-120
Workstation
with SCADA
Modbus TCP/IP
10/100TX UTP
32 TCP Slaves
RTU
Master
ASCII
Master
32 TCP Masters
RTU
Slave
ASCII
Slave
Modbus TCP/IP Ethernet RS232/RS422/RS485
Modbus
Equipment
Serial Cable
RS232/422/485
RS232/422/485
100BASE-TX UTP
RJ45
LNK/ACT 100
Reset
5V , 2A max.