You can reconfigure the network settings like default gateway and ip address of an B&R X20 Coppler directly via telnet.
Configuring an IP address
The required function code is fc6 followed by the address position and new value, for example:
fc6 0x1005 123 sets the
Configuring a Subnet Netmask
Subnet configuration is similar to the setting of the ip address, use function code
fc6 for each portion of the subnet mask, see below.
Configuring a Default Gateway