REX250, Ethernet router

REX250, Ethernet router

The REX 250 routers are designed for operation in conjunction with the myREX24 V2 portal: The complete parameterization and remote maintenance is carried out via the portal. In addition to remote maintenance, the REX 250 routers can also read data from the PLC, visualize and generate alarms. For remote maintenance and data transmission, the industrial router uses an encrypted VPN tunnel based on the secure OpenVPN protocol.

The REX 250 routers also enable remote maintenance and data access to PLCs via an MPI / PROFIBUS and via an RS232 interface.

With the 4 digital inputs, alarms can be sent via SMS and email via the myREX24 V2 Portal. The 2 digital outputs can change the system states of the router, e.g. with a lamp on the control cabinet, or can be activated via the portal.
The USB host interface available on all devices enables the connection of USB device devices (eg programming interface of a drive) via the remote maintenance tunnel (USB-over-IP).

The REX 250 LTE has an LTE modem, which connects to the myREX24 V2 portal. The WAN interface, which is also available, can form a fail-over network in conjunction with the 4G modem. The integrated 4-port switch can be used to connect the Ethernet nodes of the machine to the router on the available RJ45 ports.

  • Remote access to Ethernet-enabled devices such. PLC, HMI, IP camera
  • WAN, WIFI or LTE variants available
  • WAN interface for fail-over operation (LTE and Wifi)
  • Space saving and compact
  • Integrated firewall
  • Integrated 4-port LAN switch
  • Digital inputs and outputs for connection establishment, status display and alarm
  • Easy and fast configuration via the myREX24 VPN portal
  • Read, visualize and log data from PLC
  • Direct connection of S7-MPI / PROFIBUS devices
  • Free S7-MPI / PROFIBUS driver
  • Remote control of remote devices via Internet (RS232)
  • Remotely maintain USB devices over the Internet
  • Dual SIM (LTE)
GSM modem
GSM-ModemMultiband GSM/GPRS/WCDMA/LTE Data Interface
Antenna terminalSMA socket (Male thread)
SIM card typeStandard SIM 1.8 V/3 V
GSM frequency bandsGSM/GPRS/EDGE: 850, 900, 1800, 1900
LTE frequency bands (MHz)B20 (800), B3 (1800), B7 (2600)
Transmit powerClass 1, E2, 3, 4
Data transmission rateHSPA + (Upload 5.76 Mbps | Download 42.0 Mbps) - LTE (Upload 50 Mbps | Download 100 Mbps)
WAN interface
ConnectionRJ45 socket
Transmission rate10/100 Mbps
LAN interface
ConnectionRJ45 socket
Transmission rate10/100 Mbps
USB interface
ProtocolUSB 2.0 host
ConnectionUSB-A port
Serial Interface
TypeRS-232/422/485 (software switchable)
Protocoltransparent access via virtual COM port
Transmission rate300 bauds ... 115 k bauds
PROFIBUS interface
Transmission rateup to 12 Mbps
InterfaceRS-232/485 (software switchable)
ConnectionSocket, SUB-D, 9-pin
General information
Dimensions (DxWxH)35 x 89 x 75 mm
WeightApprox. 220 g
Digital outputs | electricity2 | Max. 0.5 A per output
Status indicator8 LEDs, function status, 10 LEDs Ethernet status
Voltage supply24 V DC, 18–28 V DC
Current drawMax. 90 mA with DC 24 V
Ambient temperature-40 °C ... +75°C
Transport and storage temperature-40 °C … +85 °C
Relative air humidity95% r. H. without condensation
Pollution degree2
Protection ratingIP20



REX 250 WAN, 4 x LAN (switch)/1 x WAN, 1 x PROFIBUS, 1x serial interface, incl. Quick Start Guide700-878-WAN01
REX 250 LTE, 4 x LAN (switch), 1x LTE modem, 1x PROFIBUS, 1x serial interface, incl. Quick Start Guide (EU- & Asia-Version)700-878-LTE01
REX 250 WiFi, 4 x LAN (switch), 1x WAN, 1x WiFi, 1x PROFIBUS, 1x serial interface, incl. Quick Start Guide700-878-WIF01


Secure IOT remote maintenance access Versie: 05-2020
Secure IOT remote maintenance access - FR Versie: 03-2018


Quick Start Guide REX200/250 Versie: 5


REX 2x0, firmware Versie: 7.4.0
shCHECK Versie: 1.1.3
shDIALUP Versie: 3.9 R0.5
vraag meer informatie over toepassingen aan via ons contactformulier.