The unit has an SD slot and a USB port for memory. I guess as long as it works in the end, everyone will be happy. This was fairly straight forward for Siemens and A-B, but it seems like a bunch of hoops for Mitsubishi. The next big issue I have is adding some pdf reference files to the HMI. Since the functionality is essentially the same, I will just use the timed interrupt for standby program method. I should get a chance to work on it again in the next couple of days. It is explained slightly differently than the timed interrupt using a standby program. It seems odd to me that they would have an option of "fixed scan", explain how it works from a processor timing perspective, then not explain how to enable the fixed scan in clear terms. I have not had a chance to mess with the interrupt masking.
I just set the command frequency based on jog/run mode, which works well enough. Adding an NC of the specific read/write function fixed that issue. I figured out the first line of the example program only sets the PLS function once, since the buffers always read clear.
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