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Data Sheet

Modbus gateways allow data transmission between LAN hosts and serial devices by converting Modbus protocols (Modbus TCP and Modbus RTU/ASCII). They are intended to be used in industrial networks especially in the field of Industry 4.0 but not only. Apart from extending the capabilities of industrial devices, they can be also adapted up to user’s requirements and needs.

Transmission is carried out by two modes: Gateway and Router. In the Gateway mode the port is used to communicate with Slave devices, but in the Router mode with Master devices. It is also possible to set up different modes on every port. Block diagrams below describe how each of these modes works.

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Features

  • 2-mode Ethernet Modbus Gateway
  • Ethernet converter to RS232/RS485
  • ESD protection for the RS485 data line
  • Power supply: +12 to +30 VDC
  • Transmission speed up to 115200 bps
  • Tx, Rx and power LED indicators
  • RS485 embedded termination 120 ohm
  • Operating temperatures: -40°C to +75°C
  • DIN rail mounting
  • Dimensions: 90x56.4x22.5 mm
  • 3 Years Warranty
  • Customization of OEM is welcomed

Introduction

Devices are based on G01 - G03 gateways (ESP32 Xtensa LX6 microcontroller) and G14 - G16 gateways (STM32F4 microcontroller) depending on needed ports and interfaces.

Dedicated EMC integrated circuits guarantee improved connection quality by limiting the impact of interference typical for an industrial environment.

Specification

Redisage PN

G01

G02

G03

G14

G15

G16

Ports

RS232

2x

-

-

4x

2x

-

RS485

-

1x

-

-

2x

4x

RS232/RS485

-

-

2x

-

-

-

Microcontroller

ESP32

STM32F4

WiFi

N/A

Power

Voltage

12-30 VDC

Power

< 1W

Frame ground connection

yes

Baud rate

up to 115200 bps

LED indicators

communication Tx, Rx and power

RS485 termination

120 ohm manually enabled

Connector

RS232/RS485

8 pin terminal block max. 2.5 mm2 wire

Power

3 pin terminal block max. 2.5 mm2 wire

Ethernet

RJ45

Transmission
distance

RS485

max. 1,200 m at 9.6 kbps; max. 400 m at 115.2 kbps
(Belden 9841 2P twisted-pair cable, if different cables are used,
the transmission distance may change)

Mounting and enclosure

DIN rail, plastic PA - UL 94 V0, black/green

Temperatures

-40°C to +75°C operating and storage

Humidity

10 - 90% RH, non-condensing

ESD protection

±4 kV contact discharge / ±8 kV air discharge

Certification 

CE, RoHS

Applications

G01 - Ethernet Modbus Gateway 2 x RS232

G02 - Ethernet Modbus Gateway 1 x RS485

G03 - Ethernet Modbus Gateway 2 x RS232/RS485

In the G03 gateway user should use only RS232 or only RS485 interface of one port as they occupy the same internal bus of the device.

G14 - Ethernet Modbus Gateway 4 x RS232

G15 - Ethernet Modbus Gateway 2 x RS232 & 2 x RS485

G16 - Ethernet Modbus Gateway 4 x RS485

Frame Ground FG

Electronic circuits are constantly prone to electrostatic discharge ESD.

Redisage Electronics modules feature a design for the frame ground terminal block FG.

The frame ground provides a path for bypassing ESD, which provides enhanced static protection ESD abilities and ensures the module is more reliable.

Connecting FG terminal block to the earth ground will bypass the ESD disturbances outside the device so will provide a better level of protection against ESD.

Frame Ground FG connection reference drawing is provided below.

If earth ground is not availabe FG can be left floating or can be connected with power supply GND.

Pin Assignments

G01

7a36a230-516d-413d-a5b2-aeb9c4044bb0.png

G02

27b5fe0a-d8ca-451b-a20d-2f1678d04547.png

G03

54ec2665-7a15-484f-bdf2-6917b054595c.png

G14

3194e998-4094-4387-8062-f44a1ae1bc9d.png

G15

a9bf9b11-bebf-45e5-a3d8-81d001bb0c78.png

G16

1bbc9a2e-ce07-44af-9ad1-3fcfe6685a3b.png

Enclosure Dimensions

U Module Enclosure.

98 x 22.5 x 56.4

Units: mm.

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Getting Started

Power Supply

Ethernet Modbus gateways G01 - G03 and G14 - G16 have wide voltage power input 12 - 30 VDC. The power consumption is less than 1 W.

LED Indicators

Ethernet Modbus gateways G01 - G03 have 3 LED indicators:

  • PW LED Blue - Power
  • ETH LED Green - Network activity 
  • ST LED Orange - USB-UART Serial console mode

38965053-10b3-4e51-be9b-957b01b9938c.png

Ethernet Modbus gateways G14 - G16 have 5 LED indicators:

  • PW LED Blue - Power
  • ER LED Yellow - Error
  • ETH LED Green - Network activity 
  • COM LED Green - RS232/RS485 activity
  • CN LED Yellow - Console mode
  • SR LED Red - Service mode

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Configuration by the Web Page

Default configuration of the Ethernet Modbus gateways:

  • IP address: 192.168.100.100
  • Subnet mask: 255.255.255.0 
  • Gateway: 192.168.100.1
  • DNS 1: 192.168.100.1
  • DNS 2: 8.8.8.8

Default login details:

  • User name: admin
  • Password: admin123

To access to the web page open the web browser, type the IP address in the address bar and log in using the default user name and password. The device and a PC must be connected to the same Local Area Network.

32d29880-42fe-4e1e-93e8-4b857552cbad.png

After successful login, the “Status” page will show the current status of the ports.

4f6ed827-ab6f-4372-8bef-95d723d573c8.png

To change the user name and password click on the user icon and select “Edit user”.

Ports configuration is possible on the “Ports” page.

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