Remote Access for Schneider PLCs - eWON wiki

11. Appendix 2 – eWON as Gateway in PLC
Note: The XWAY address configured here should not be changed as it is the
address of the Ethernet card of the PLC (not the one of the eWON).
4. Click on Apply and reboot the Ethernet card (see § 6.3 Ethernet link configuration).
5. You can now make the physical link between the PLC to the Ethernet LAN port of the
eWON.
6. End of eWON as Gateway configuration.
What if you cannot set Gateway on PLC?
Setting the eWON as Gateway in the PLC is not always possible. In such case, you
should first make sure the Plug'nRoute feature does not work in your specific case. If
so, disable Plug'nRoute like explained in point 1 above and reboot your eWON.
You can now use the eWON Proxy feature to allow remote connection to the PLC
without mapping the eWON IP address as gateway.
Detailed information on how to do this can be found on the eWON Web site: "How to
proxy a PLC protocol" http://support.ewon.biz/docs/Proxy_PLC.htm
When using a Proxy, in combination with a Talk2M Connection, then you need to map
the VPN IP address of the eWON in PL7 to allow the remote connection.
This is impacting:
§ 5.6 Step 6: Connecting the eWON remotely - point 5 – you need to fetch the VPN IP
address allocated by Talk2M. Keep only the core IP, not the port part, this would be
10.8.129.82 in the example below.
§ 6 Linking eWON and PLC – you need to configure the proxy feature of the eWON. See
detailed description in document referenced above.
§ 7 PLC software mapping configuration –
you need to map the VPN IP address
instead of the eWON LAN IP address.
Remote Access for Schneider Electric Modicon Micro & Premium Series PLCs (How to) Page 44/47