Industrial-Router
REX 250 WAN
Ethernet participants, such as PLC control systems, can be reached with the REX 100 industrial routers, irrespective of the 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
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
- 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
I/O
- Digital inputs4x DIN EN 61131-2 Type 3
- Digital outputs2x 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
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
- ApprovalsCE
| Name | Version | Size |
| Quick Start Guide, REX 200/250 | 9 | 2 MB |
| Name | Version | Size |
| Change Service - REX 3G to LTE, Whitepaper | 351 KB | |
| REX 200/250, Whitepaper OpenVPN Client/Router | 1 | 2 MB |
| Name | Version | Size |
| myREX24 virtual server - Machine data in your own hands | 07-2019 | 1 MB |
| REX Ethernet-Router - Next Generation Remote Access | 06-2023 | 2 MB |
| 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 |
| Name | Version | Size |
| REX Ethernet Router, OpenSource license terms | 27 KB |
| Name | Version | Size |
| REX 200/250, Firmware | 8.4.3 | 24 MB |
| REX 200/250, Firmware Changelog | 8.4.3 | 29 KB |
| shDIALUP (Windows 7, Windows 8, Windows 10, Windows 11) | 3.9.R0.11 | 69 MB |
| Name | Version | Size |
| NETLink-S7-NET 32-/64-bit, driver for S7 software from Siemens | 3.5.0.3 | 11 MB |
| Name | Version | Size |
| REX 250 WAN, STEP files | 2 MB | |
| EPLAN Data Portal, Helmholz product macros |
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