I’ve been replacing legacy HMI screens that are many, many years past life expectancy, but they still work. The issue though is whether we still have access to a working programming terminal of the same vintage. Virtual PCs can be of some help, but we still have to deal with the communications from PC to device and some of the older technologies don't pass through a virtual PC very well.
The challenge has been to get a version of the application for these HMIs, so I could either convert it or rebuild it in a new platform. Without the programming software and application, I’m left with developing it from scratch. Anyone have experience with this or suggestions on how to address this?
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