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And Siemens does it still, even though they translate words to English. Using Tia Portal, one "downloads" a program from the host to the PLC.

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That's pretty common terminology in PLC's though. You also download to Koyo PLC's from Automation Direct.

Same with Rockwell (Allen-Bradley) PLCs. You download a program to the PLC, and upload a program from a PLC.

I always assumed the naming confusion for those was just a matter of perspective; if you are thinking about a "download" from the perspective of the PLC receiving the file or the user sending the file.

Also in embedded systems development, one downloads the application to the target device.

I more commonly see that called “upload” (Arduino, platform.io, avrdude, esptool) rather than “download”.

That is likely, for lack of a better word, an Arduino-ism. Compare a search for "ISP downloader" vs "ISP uploader"; the latter yields exclusively Arduino results, while the former has results for not only Arduino but other MCUs and even FPGAs and CPLDs' programming devices as well as JTAG.

Well, at least, they don't "play them in" :)

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