REX 250 WIFI

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).

General information

• Dimensions (DxWxH) 35 x 100 x 73 mm
• Weight Approx. 250 g
• Status indicator
  • 4 LEDs, function status
  • 8 LEDs, Ethernet status
• Voltage supply 24 V DC, 18... 28 V DC
• Current draw max. 100 mA at DC 24 V

I/O

• Digital inputs 4x DIN EN 61131-2 Type 3
• Digital outputs 2x max. 0.5 A for each output

WAN interface

• Number 1
• Type 10-Base-T/100-Base-T
• Connection RJ45 socket
• Transmission rate 10/100 Mbps

LAN interface

• Number 4
• Type 10-Base-T/100-Base-T
• Connection RJ45 socket
• Transmission rate 10/100 Mbps

USB interface

• Number 1
• Protocol USB 2.0 Host
• Connection USB-A-socket

Serial Interface

• Type RS-232/422/485 (software switchable)
• Protocol transparent access via virtual COM port
• Transmission rate 300 bauds ... 115 k bauds

PROFIBUS interface

• Transmission rate up to 12 Mbps
• Interface RS-232/485 (software switchable)
• Connection Socket, SUB-D, 9-pin

VPN

• VPN protocol IPsec/PPTP/OpenVPN, 64 tunnels
• Encryption Method Blowfish, AES, DES/3DES
• Encryption algorithms MD5, SHA1
• Authentication Pre-shared key, X.509

Network/security

• Firewall 1:1 NAT, IP filter, port forwarding, stateful inspection
• IP router NAT IP, TCP/IP routing, IP forwarding
• Services DHCP server, DHCP client, DNS server, NTP client, PPP server, DynDNS
• Time comparison NTP server

Ambient conditions

• Ambient temperature -40 °C … +75 °C
• Transport and storage temperature -40 °C … +85 °C
• Relative air humidity 0 – 95% non-condensing
• Pollution degree 2
• Protection rating IP20
• Certifications CE

CE

• RoHS Yes
• REACH Yes