Network interconnection requirements

Assuming your MES servers are all on the Plant Production network, the following servers will require access to servers outside this network:

• Database Server: Plant Business Network or Corporate WAN for the ERP interface

• Application Server/OI Servers: Controls the network for the PLC data acquisition

• Database Server: Plant Business network or Corporate WAN for user reports access

Getting data outside your domain or on a different network might cause issues related to crossing the firewall and users rights on both networks.

The basic idea is to have the server placed on the network where it is most used and have a router that connects the network or network segments. This router would allow cross network communications while isolating traffic and limiting access based on configuration.