# Hardware

## Modbus Ethernet Wi-Fi Gateways (G11 - G13)

Modbus Gateway can be installed on any device from Redisage G11 - G13 Modbus Gateways family.

### Features

<table border="1" id="bkmrk-features-2-mode-ethe" style="width: 100%; height: 357.563px;"><colgroup><col style="width: 47.5566%;"></col><col style="width: 52.4434%;"></col></colgroup><tbody><tr style="height: 29.7969px;"><th data-cell-background="#f4f5f7" data-colwidth="340" style="height: 29.7969px;">**Features**

</th><th data-cell-background="#ffffff" data-colwidth="340" rowspan="12" style="height: 357.563px;">[![g11.jpg](https://doc.redisage.com/uploads/images/gallery/2025-03/scaled-1680-/g11.jpg)](https://doc.redisage.com/uploads/images/gallery/2025-03/g11.jpg)

</th></tr><tr style="height: 29.7969px;"><td data-colwidth="340" style="height: 29.7969px;">2-mode Ethernet + Wi-Fi Modbus Gateway

</td></tr><tr style="height: 29.7969px;"><td data-colwidth="340" style="height: 29.7969px;">ESD protection for the RS485 data line

</td></tr><tr style="height: 29.7969px;"><td data-colwidth="340" style="height: 29.7969px;">Power supply: +12 to +30 VDC

</td></tr><tr style="height: 29.7969px;"><td data-colwidth="340" style="height: 29.7969px;">Transmission speed up to 115200 bps

</td></tr><tr style="height: 29.7969px;"><td data-colwidth="340" style="height: 29.7969px;">Tx, Rx and power LED indicators

</td></tr><tr style="height: 29.7969px;"><td data-colwidth="340" style="height: 29.7969px;">RS485 embedded termination 120 ohm

</td></tr><tr style="height: 29.7969px;"><td data-colwidth="340" style="height: 29.7969px;">Operating temperatures: -40°C to +75°C

</td></tr><tr style="height: 29.7969px;"><td data-colwidth="340" style="height: 29.7969px;">DIN rail mounting

</td></tr><tr style="height: 29.7969px;"><td data-colwidth="340" style="height: 29.7969px;">Dimensions: 90x56.4x22.5 mm

</td></tr><tr style="height: 29.7969px;"><td data-colwidth="340" style="height: 29.7969px;">**3 years warranty**

</td></tr><tr style="height: 29.7969px;"><td data-colwidth="340" style="height: 29.7969px;">**Customization of OEM is welcomed**

</td></tr></tbody></table>


### Variants  


#### G11 - Ethernet + Wi-Fi Modbus Gateway 2 x RS232

<div drawio-diagram="1324"><img src="https://doc.redisage.com/uploads/images/drawio/2025-07/drawing-29-1751544785.png" alt=""/></div>

#### G12 - Ethernet + Wi-Fi Modbus Gateway 1 x RS485

<div drawio-diagram="1286"><img src="https://doc.redisage.com/uploads/images/drawio/2025-03/drawing-29-1741861194.png" alt=""/></div>

#### G13 - Ethernet Modbus Gateway 2 x RS232/RS485

<div drawio-diagram="1288"><img src="https://doc.redisage.com/uploads/images/drawio/2025-03/drawing-29-1741861381.png" alt=""/></div>

<p class="callout warning">In the G13 gateway user should use only RS232 or only RS485 interface of one port as they occupy the same internal bus of the device.</p>


### 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.

<div drawio-diagram="177"><img src="https://doc.redisage.com/uploads/images/drawio/2024-03/drawing-10-1711619289.png" alt=""/></div>

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


### Specification  


<table border="1" id="bkmrk-redisage-pn-g01-g02-" style="width: 114.167%;"><colgroup><col style="width: 16.0267%;"></col><col style="width: 16.5275%;"></col><col style="width: 22.3706%;"></col><col style="width: 22.3706%;"></col><col style="width: 22.5376%;"></col></colgroup><thead><tr><td aria-sort="Brak" class="ak-renderer-tableHeader-sortable-column__wrapper align-center" colspan="2" data-colwidth="220,148">**Redisage PN**

</td><td aria-sort="Brak" class="ak-renderer-tableHeader-sortable-column__wrapper align-center" data-colwidth="101">**G01**

</td><td aria-sort="Brak" class="ak-renderer-tableHeader-sortable-column__wrapper align-center" data-colwidth="96">**G02**

</td><td aria-sort="Brak" class="ak-renderer-tableHeader-sortable-column__wrapper align-center" data-colwidth="100">**G03**

</td></tr></thead><tbody><tr><td data-colwidth="220" rowspan="3">Ports

</td><td data-colwidth="148">RS232

</td><td class="align-center" data-colwidth="101">2x

</td><td class="align-center" data-colwidth="96">-

</td><td class="align-center" data-colwidth="100">-

</td></tr><tr><td data-colwidth="148">RS485

</td><td class="align-center" data-colwidth="101">-

</td><td class="align-center" data-colwidth="96">1x

</td><td class="align-center" data-colwidth="100">-

</td></tr><tr><td data-colwidth="148">RS232/RS485

</td><td class="align-center" data-colwidth="101">-

</td><td class="align-center" data-colwidth="96">-

</td><td class="align-center" data-colwidth="100">2x

</td></tr><tr><td colspan="2" data-colwidth="220,148">Microcontroller

</td><td class="align-center" colspan="3" data-colwidth="101,96,100">ESP32

</td></tr><tr><td colspan="2" data-colwidth="220,148">WiFi

</td><td class="align-center" colspan="3" data-colwidth="101,96,100,100,102,93">2,4 GHz b/g/n

</td></tr><tr><td data-colwidth="220" rowspan="2">Power

</td><td data-colwidth="148">Voltage

</td><td class="align-center" colspan="3" data-colwidth="101,96,100,100,102,93">12-30 VDC

</td></tr><tr><td data-colwidth="148">Power

</td><td class="align-center" colspan="3" data-colwidth="101,96,100,100,102,93">&lt; 1 W

</td></tr><tr><td colspan="2" data-colwidth="220,148">Frame ground connection

</td><td class="align-center" colspan="3" data-colwidth="101,96,100,100,102,93">yes

</td></tr><tr><td colspan="2" data-colwidth="220,148">Baud rate

</td><td class="align-center" colspan="3" data-colwidth="101,96,100,100,102,93">up to 115200 bps

</td></tr><tr><td colspan="2" data-colwidth="220,148">LED indicators

</td><td class="align-center" colspan="3" data-colwidth="101,96,100,100,102,93">communication Tx, Rx and power

</td></tr><tr><td colspan="2" data-colwidth="220,148">RS485 termination

</td><td class="align-center" colspan="3" data-colwidth="101,96,100,100,102,93">120 ohm manually enabled

</td></tr><tr><td data-colwidth="220" rowspan="3">Connector

</td><td data-colwidth="148">RS232/RS485

</td><td class="align-center" colspan="3" data-colwidth="101,96,100,100,102,93">8-pin terminal block max. 2.5 mm<sup data-renderer-mark="true">2</sup> wire

</td></tr><tr><td data-colwidth="148">Power

</td><td class="align-center" colspan="3" data-colwidth="101,96,100,100,102,93">3-pin terminal block max. 2.5 mm<sup data-renderer-mark="true">2</sup> wire

</td></tr><tr><td data-colwidth="148">Ethernet

</td><td class="align-center" colspan="3" data-colwidth="101,96,100,100,102,93">RJ45

</td></tr><tr><td data-colwidth="220" rowspan="2">Transmission  
distance

</td><td data-colwidth="148">RS485

</td><td class="align-center" colspan="3" data-colwidth="101,96,100,100,102,93">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)

</td></tr><tr><td>RS232

</td><td colspan="3">max. 15 m at 115.2 kbps

</td></tr><tr><td colspan="2" data-colwidth="220,148">Mounting and enclosure

</td><td class="align-center" colspan="3" data-colwidth="101,96,100,100,102,93">DIN rail, plastic PA - UL 94 V0, black/green

</td></tr><tr><td colspan="2" data-colwidth="220,148">Temperatures

</td><td class="align-center" colspan="3" data-colwidth="101,96,100,100,102,93">-40°C to +75°C operating and storage

</td></tr><tr><td colspan="2" data-colwidth="220,148">Humidity

</td><td class="align-center" colspan="3" data-colwidth="101,96,100,100,102,93">10 - 90% RH, non-condensing

</td></tr><tr><td colspan="2" data-colwidth="220,148">ESD protection

</td><td class="align-center" colspan="3" data-colwidth="101,96,100,100,102,93">±4 kV contact discharge / ±8 kV air discharge

</td></tr><tr><td colspan="2" data-colwidth="68,50">Certification

</td><td class="align-center" colspan="3" data-colwidth="102,101">CE, RoHS, EMC, LVD

</td></tr><tr><td colspan="2">Norms

</td><td colspan="3">61000-6-2 - Immunity standard for industrial environments

61000-6-4 - Emission standard for industrial environments

</td></tr></tbody></table>

### LED indicators  


<table border="1" id="bkmrk-modbus-gateways-g01-" style="width: 37.619%;"><colgroup><col style="width: 36.8254%;"></col><col style="width: 22.2222%;"></col><col style="width: 40.9524%;"></col></colgroup><thead><tr><td aria-sort="Brak" class="ak-renderer-tableHeader-sortable-column__wrapper align-center" colspan="3" data-colwidth="132,93,259">**Modbus Gateways G11 - G13**

</td></tr></thead><tbody><tr><td class="align-center" colspan="3" data-colwidth="132,93,259">[![image.png](https://doc.redisage.com/uploads/images/gallery/2025-07/scaled-1680-/7vEimage.png)](https://doc.redisage.com/uploads/images/gallery/2025-07/7vEimage.png)

  
  
  
</td></tr><tr><th data-colwidth="132">**LED indicator**

</th><th data-colwidth="93">**Color**

</th><th data-colwidth="259">**Function**

</th></tr><tr><td data-colwidth="132">PW

</td><td data-colwidth="93">Blue

</td><td data-colwidth="259">Power

</td></tr><tr><td data-colwidth="132">ETH

</td><td data-colwidth="93">Green

</td><td data-colwidth="259">Network activity

</td></tr><tr><td data-colwidth="132" rowspan="2">ST

</td><td data-colwidth="93">Orange

</td><td data-colwidth="259">Console mode

</td></tr><tr><td data-colwidth="93">Red

</td><td data-colwidth="259">Service mode

</td></tr></tbody></table>

### Pin assignments

<table border="1" id="bkmrk-g11-g12-g13%C2%A0" style="width: 100%;"><colgroup><col style="width: 33.1347%;"></col><col style="width: 33.2534%;"></col><col style="width: 33.6119%;"></col></colgroup><tbody><tr><td class="align-center">**G11**

**[![image.png](https://doc.redisage.com/uploads/images/gallery/2025-07/scaled-1680-/Vdnimage.png)](https://doc.redisage.com/uploads/images/gallery/2025-07/Vdnimage.png)**

</td><td class="align-center">**G12**

[![image.png](https://doc.redisage.com/uploads/images/gallery/2025-07/scaled-1680-/Xw2image.png)](https://doc.redisage.com/uploads/images/gallery/2025-07/Xw2image.png)  
</td><td class="align-center">**G13**

[![image.png](https://doc.redisage.com/uploads/images/gallery/2025-07/scaled-1680-/SN9image.png)](https://doc.redisage.com/uploads/images/gallery/2025-07/SN9image.png)

</td></tr></tbody></table>

<p class="callout warning">In the G13 gateway user should use only RS232 or only RS485 interface of one port as they occupy the same internal bus of the device.</p>