Data Sheet

Modbus Ethernet Wi-Fi Gateways (G11 - G13)

Features

2-mode Ethernet/ Wi-Fi Modbus Gateway
Ethernet/Wi-Fi 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 G11 - G13 gateways (ESP32 Xtensa LX6 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		G11	G12	G13
Ports	RS232	2x	-	-
	RS485	-	1x	-
	RS232/RS485	-	-	2x
Microcontroller		ESP32
WiFi		2.4 GHz b/g/n
Power	Voltage	12-30 VDC
Power	Power	< 1 W
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)
Transmission distance	RS232	max. 15 m at 115.2 kbps
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

Variants

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

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

G03 - Ethernet Modbus Gateway 2 x RS232/RS485

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.

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 available FG can be left floating or it can be connected with the power supply GND.

Pin assignments

G11

G12

G13

Enclosure dimensions

2U Module Enclosure
98 x 22.5 x 56.4
Units: mm