REX 250, Ethernet Router

Industrial Ethernet Router, REX 250 WAN
Industrial Ethernet Router, REX 250 WAN

REX 250 WAN, 4 x LAN (switch)/1 x WAN interface

With the REX 250 industrial routers, Ethernet subscribers, such as PLC controllers, can be reached regardless of manufacturer.

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 WAN has a WAN interface via which the connection to the myREX24 V2 portal is established. 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, 3G or LTE variants available
  • WAN interface for fail-over operation (3G, 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
Download PDF datasheet
General information
Order number700-878-WAN02
Article nameREX 250 WAN, 4 x LAN (switch)/1 x WAN interface
Scope of deliveryREX 250 WAN, Quick Start Guide
Dimensions (DxWxH)35 x 100 x 73 mm
WeightApprox. 250 g
Digital inputs | Type4 pieces | DIN EN 61131-2 Type 3
Digital outputs | electricity2 pieces | max. 0.5 A for each output
WAN interface
Number1
Type10-Base-T/100-Base-T
ConnectionRJ45 socket
Transmission rate10/100 Mbps
LAN interface
Number4
Type10-Base-T/100-Base-T
ConnectionRJ45 socket
Transmission rate10/100 Mbps
USB interface
Number1
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
Status indicator8 LEDs, function status
10 LEDs, Ethernet status
Voltage supply24 V DC, 18... 28 V DC
Current drawmax. 90 mA at DC 24 V
Ambient conditions
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
CertificationsCE
CE
RoHSYes
REACHYes

Videos

02. myREX24 V2 - Configuration and commissioning

Technical Documentation

 NameVersionSizeTags
Quick Start Guide, REX 200/250 (700-87x-xxxx1) 5 2 MB
for Portal myREX24 V2: Quick Start Guide, REX200/250 (700-87x-xxxx2) 6 2 MBfor Portal myREX24 V2: Quick Start Guide, REX200/250 (700-87x-xxxx2)

Whitepapers

 NameVersionSizeTags
CHANGE SERVICE - REX 3G TO LTE 351 KBCHANGE SERVICE - REX 3G TO LTE
Whitepaper, REX 200/250 OpenVPN Client/Router 1 2 MBWhitepaper, REX 200/250 OpenVPN Client/Router

Flyers

 NameVersionSizeTags
myREX24 virtual server - Machine data in your own hands 07-2019 1 MBmyREX24 virtual server - Machine data in your own hands
REX Ethernet-Router - Next Generation Remote Access 08-2021 3 MBREX Ethernet-Router - Next Generation Remote Access
Form WAN router Configuration data myRex24 V2 - EN 717 KB
Form WAN router Configuration data myRex24 V2 - CN 2 MB
Form WAN router Configuration data myRex24 V2 - FR 2 MB

License Agreements

 NameVersionSizeTags
REX Ethernet Router, OpenSource license terms 27 KB

Software

 NameVersionSizeTags
shDIALUP (Windows 7; Windows 8; Windows 10) 3.9.R0.5 69 MB History
REX 2x0, Firmware 7.0.0 20 MB History REX 2x0, Firmware

Drivers

 NameVersionSizeTags
NETLink-S7-NET Driver, for Windows 7/8/10 32/64 Bit 3.5.0.3 11 MB History

Planning Tools

 NameVersionSizeTags
REX 250 WAN, STEP files 2 MB
Spam-Schutz

Our products contain, among others, open source software. This software is subject to the applicable licensing conditions. We will send you the appropriate licensing conditions, including a copy of the complete licensing text, together with the product. These are also available in our download area of the respective product under www.helmholz.de. We also offer to send you or any third party the complete source code of the applicable open source software as a DVD upon request for a contribution towards costs of 10.00 Euro. This offer is valid for a period of three years as of the delivery of the product.