Helmholz 700-875-LTE11, 700-875-LTE61 REX 100 Router User Guide

5.4 Step 1 “Device” – Selection of the type and name  

In the first step, the correct device type (matching the device order number) must be selected. A unique,  

freely selectable name should be assigned to this router.  

Only numbers and letters may be used (0 to 9, A to Z, a to z and no spaces or special characters).  

5.5 Step 2 “Internet” – Network settings  

In Step 2, the network configuration for the LAN, WAN and, depending on the version, the LTE cellular  

or the WiFi settings must be defined.  

LAN  

All REX 100 routers come with the IP address 192.168.0.100/24 as a default. If necessary, mod-  

ify the IP address and subnet mask according to the specifications from the machine network  

to be maintained remotely.  

WAN  

The required information for the DHCP or static IP settings is provided by the respective net-  

work administrator. DHCP is preset at the factory.  

Modem The parameters for the APN access point (Access Point Name) of the card provider and the  

correct SIM PIN must be available to you and be stored here. There are already several provid-  

ers available for selection (sorted by country). In the event that the correct provider is not pre-  

sent, this can also be entered manually.  

WLAN  

Enter the Wi-Fi-specific access data. The corresponding data provides you with the responsible  

network administrator.  

If you use DHCP, make sure that the DHCP server does not assign an IP address the WAN interface  

that is already active on the LAN side. IP addresses from two different subnets must be assigned to  

each router’s LAN and WAN interfaces.  

QuickStart Guide REX 100 | Version 14 | 22.01.2025  

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