The Data Highway Plus is a legacy communication system, very popular with PLC5 processor systems. There are many older machine systems that will eventually updated to CompactLogix and ControlLogix processors.
The retrofit process is easier and less costly when the systems are installed in phases. The challenge we found was to locate a conversion method to phase out the original Xycom HMI computer and Wonderware software.
We have found the Red Lion HMI, with the very flexible programming language, to be a great replacement for the Xycom.
Because Data Highway Plus is no longer popular, it was difficult to locate communication convertor. The Data Highway Plus to DF1 convertor from Datalink Technologies Gateways, Inc is a great solution and economically priced.