Ewon Technical Forum

Is an Ewon Flexy 205 able to publish its Mobus TCP data on the WAN port, even when IP range is not within IP range of Ewon WAN?

 - i have a working example, where I have a SCADA connection to the Ewon's WAN port, reading and writing Modbus TCP values in the Ewon.
    But in this example, the SCADA server IP-Address is in the same range as Ewon's WAN IP range.

My question now is:
 - My clients SCADA server resides somewhere in the cloud, the ewon will be located at my clients head quarters. Routing / VPN is needed to reach the Ewon flexy.
   Is it still possible for the ewon to publish its Modbus TCP data to this SCADA server? (which now resides in another IP range than Ewons WAN IP)

Thanks for any support, tips, confirmation in advance,
Kind regards,
Marcel

Marcel,

You can normally use the 11NAT feature to create a virtual IP address into the SCADA range : https://forum.hms-networks.com/t/nat-1-1...-flexy/303

(10-02-2023, 08:00 PM)simon Wrote: [ -> ]Marcel,

You can normally use the 11NAT feature to create a virtual IP address into the SCADA range : https://forum.hms-networks.com/t/nat-1-1...-flexy/303

Hi Simon,

I do not have a LAN device. The Ewon itself is the device I want to connect to SCADA. (I think NAT1:1 is merely to connect LAN devices to Ewon and present them with the Ewon's WAN IP-address to the rest of the world?)

The Ewon Flexy has internal Values, tags, which I have published on Modbus/TCP. These values will be read/written by a SCADA application. The entire network route from SCADA to the Ewon is managed by an external IT company, so we do not use the Ewon as VPN router or such. This is unfortunately done with external/other devices. SCADA application resides in the cloud, the Ewon has a physical location which is known.

If i put a Test-SCADA application on Ewon's LAN side (SCADA in same IP-range as Ewon's LAN), then I am able to read/write the Published Modbus/TCP values of the Ewon.
If i put a Test-SCADA application on Ewon's WAN side (SCADA in same IP-range as Ewon's WAN), then I am able to read/write the Published Modbus/TCP values of the Ewon.
Question: If i put a SCADA application in the cloud, with external managed VPN routes, SCADA NOT In same IP-range as Ewon's WAN), will i be able to access the Published Modbus/TCP data on Ewon's WAN IP-address? So Ewon needs to answer Modbus/TCP to a gateway address. > I think is possible as well, but is my assumption correct?

Background info on why we only use an Ewon, and no devices to connect:
We use Ewon to escalate SCADA's alarms via Modbus/TCP to Ewon, and from Ewon with some basic scripting to an SMS message on mobile phones

Thanks in advance..

Kind regards,
Marcel

Solved. Have the application up and running.

Excellent ! Thx for the feedback !