Quick Start Guide REX 100 3G | LTE
16
6. Remotely servicing an Ethernet PLC
Note
: The integrated 4-port switch is suitable for 100 Mbps and full duplex operation
and supports auto-crossover and auto-negotiation. No special PROFINET functions that
are required for use in systems with PROFINET conformance class B or C are supported.
Please note that the "P1“ LAN interface is started delayed for technical reasons in the
event of a device reset.
In order to be able to access an Ethernet PLC through a VPN connection, the "Use
router" option must be enabled and correctly filled out in the PLC for the Ethernet
port being used for remote servicing purposes.
The IP you need to enter under "Address" corresponds to the REX 100 unit's LAN IP
address.
Note
: The IP address of the PLC must lie within the address range of the LAN interface
of the REX 100. If it should not be possible to activate the "Use router" option in your
project, or if you want to reach an Ethernet device for which you cannot enter a gateway
IP, please check the security settings in Device Administration of the myREX24 portal in
the "Settings" tab.
The SNAT function should be enabled under "General Firewall Settings" so that you will
be able to reach devices in which a gateway IP has not been entered. This function is
always enabled in myREX24 configurations.