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sundy58:
It is an expensive option.
You should really play with the option to see if it functionally meets your needs.
From a general system perspective you need to analyze the number and size of files with which you will work. Will you be dealing with thousand or tens of thousands of files? Many of which might be nearly identical. or Will you work with maybe 10 files and never save these for future reference? Will you send files in both directions?
With RS232 at 115.2 kbaud you can transfer about 500,000 bytes per minute to HAAS and maybe a little faster from HAAS to PC. May depend upon the year of manufacture. This should more than keep up with most drip feed applications, and for reasonable size files, like up to 5 megabyte, is not too long a wait.
If you use low capacitance cable, 15 pfd per foot, you may be able to work with 15 to 20 ft of cable at 115.2 kbaud.
With direct connection of the RS232 cable, meaning no isolation, you should put a single phase transfomer from the HAAS machine three phase input, any two lines, to 120 v output to supply computer, and accessories. It needs enough VA capability for whatever this load would require. Also a safety ground wire from the HAAS safety ground point to the safety ground wires of the computer equipment. Do not use any convienent wall outlet, this creates major ground loop problems.
If you want electrical isolation of the RS232 link we have product, I232, that has optical isolation, can operate at 115.2 kbaud with good ground loop noise immunity, and do this to 4000 ft in many applications. We have put a 1000 v rms 60 hz signal ( +/-1414 v peak ) on the interconnect line with no effect on data transfer or equipment damage. See our web site
www.beta-a2.com. For your distance it would be a little over $200.
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