Dears,

kindly I have 2 independent systems (PCS& V6.1) each running on a S7-400 PLC (6ES7417-4XT05-0AB0).

They are programmed via the same ES, but not on the same range of IPs for the servers and clients.

I need to transfer tags between each one of the systems.

what is the best way to do ?

thanks,

Elie

hi ElieR,

with not the same IP-range, the best and easiest would be to use a PN/PN-coupler. 

Here you find the manual of it:

SIMATIC Bus links PN/PN coupler

hope this helps,

regards,