Communication between AC800M and S7-400 Siemens PLC
We are using AC 800M and S7-400 PLC.
We need to transfer 1 analog value from AC 800 M to S7-400 siemens PLC. There is no profibus communication between these systems.
We need to transfer through Ethernet communication.
Physical connection between these systems are laid through firewall as both systems are in different IP.
Now how to transfer and receive data between these systems?