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G03 - Modbus TCP to 2x RS232/RS485 (RTU/ASCII) Gateway
G03 - Modbus TCP to 2x RS232/RS485 (RTU/ASCII) Gateway
- Dual-channel Modbus Gateway for integrating RS232 and RS485 devices into Ethernet networks in Gateway and Router modes.
Product Description
The Redisage G03 gateway is an advanced protocol converter designed for bidirectional data exchange between Ethernet networks (Modbus TCP) and serial buses (Modbus RTU/ASCII).
The G03 model stands out with its interface flexibility (Combo). It features two independent communication ports, each allowing the connection of devices in either RS232 or RS485 standards (selectable via wiring to the terminal block). Key features:
• Conversion: Modbus TCP <-> Modbus RTU/ASCII
• Configuration: Web browser (built-in web server), Telnet or serial console
• Ports: 2x (RS232 or RS485) – independently configurable
• Operating Modes: Gateway (for Slave devices) and Router (for Master devices)
• Power Supply: 12-30 VDC
• Protection: ESD ±4kV/±8kV
Technical Documentation
Datasheet (DTR): ⬇ Download G03 Datasheet
Knowledge Base: 🔗 doc.redisage.com
Brand
Symbol
G03
Producer code
5903949781267
Series
Warranty
Main data
Power voltage
12-30 V/DC
Power connector
Screw terminal
Wi-Fi
No
Work temperature range
-40°C to +75°C
Safety measures
ESD 4 kV / 8 kV
Burst
Surge
RF
Ethernet
Ethernet Interface
1x RJ45
WAN/LAN
2 kV Isolated
Speed
10/100 Base-T
Protocol
Modbus TCP
Modbus RTU
Modbus ASCII
Serial Ports
Number of ports
2
Port type
2x RS232/RS485
Connector type
Screw terminal
Transmission speed
115200 bps
Data bits
7
8
Stop bits
1
2
Controll Bits
none
odd
even
Enclosure
Mounting
DIN Rail
Width in standard modules S (17.5 mm)
1.5 Module
Width
22.5 mm
Height
56.4 mm
Length
98 mm
Ingress Protection Code
IP20
Standards and Certifications
Declarations of Conformity
CE
RoHS
EMC
LVD
Norms
61000-6-2 - Immunity standard for industrial environments
61000-6-4 - Emission standard for industrial environments
About G03
G03 – Universal Modbus TCP/RTU Conversion
The G03 Modbus Ethernet Gateway is a dedicated solution for integrating automation systems based on different physical layers. The device not only converts electrical signals but performs intelligent translation of the Modbus TCP (Ethernet) protocol to Modbus RTU/ASCII (Serial), granting SCADA systems or PLCs access to field devices that lack a network interface.
A unique feature of the G03 model is its support for two operating modes on each port. In Gateway mode, the device acts as an intermediary for Slave modules (e.g., energy meters, inverters). In Router mode, it allows Master controllers (e.g., older HMI panels) to connect to the Ethernet network. Additionally, each of the two ports is fully hardware-configurable—users can choose between RS232 or RS485, making the G03 a versatile tool for heterogeneous installations.
Thanks to the use of EMC circuits, the gateway is resistant to industrial interference, and its wide operating temperature range allows for installation in outdoor cabinets.
Technical Specifications:- Protocols: Modbus TCP <-> Modbus RTU/ASCII Conversion.
- Combo Ports: 2x RS232 OR 2x RS485 (screw terminals).
- Configuration: Via Web Browser (Built-in Web Server).
- Performance: Supports up to 20 sockets (Gateway) / 8 sockets (Router).
- Protection: ESD protection on data lines.
The G03 model is the ideal choice for Industry 4.0 integrators needing a reliable bridge between IT and OT worlds. Detailed wiring diagrams are available in the technical documentation.
3 Year Warranty
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