Hello,
to get acess via VPN to an older SIEMENS S7-300 /400 PLC that has only MPI/Profibus - DP free for remote maintenance you need some type of special Hardware adapter like:
Hilscher: NT 50-MPI–S7-200/300/400 Ethernet-Programmieradapter
I would like two know if this can be done with one of our teltonika routers too,
Some of them have an RS-485 interface, if iam right. I have found communiaction bridge solutiuons between Modbus TCP ↔ Modbus RTU, but havent found a nte of Profibus -DP and / or MPI are also supported.
Thanks in advance