I'm experiment a strange problem:
I have a RUT240 in LAN with a modbus tcp/485 gateway (ADFWEB) and a PC.
I can ping RUT240 and ADFWEB from the PC so I'm sure both the devices are online. There's no way to let the RUT240 ping that device. If I try setting up the modbus communication (RUT240 as master, AFWEB as slave) i get a "no route to host", so it seems that the RUT240 is not "seeing" that ip address in its network. Of course, if i try modbus requests from the PC they are ok, so i am sure ADFWEB gateway is ok even on the modbus side.
What could the issue be?
Any suggestion is appreciated.