SNMP - The Solution to the Problem You are About to Consider Very Important!
Simple network management protocol (SNMP) is a communications protocol built into most of the IT infrastructure around us. From printers to UPS systems, routers and the PCs we use in automation, virtually everything in the IT world supports SNMP communications. It is already there, waiting for your use. And, it is supported over the Ethernet you are already using. The plant engineer has been leveraging this type of functionality with automation equipment for years! All that is needed is the addition of another communication driver or two, enabling the integration of IT infrastructure equipment via SNMP, with the other protocols currently being monitored by your existing HMI/SCADA. The return on this investment is likely to be the lowest hanging fruit that you'll find for a long time.