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CAM file transfer to Fanuc 21i


Oct 16, 2017
I recently purchased a lathe with Fanuc 21i control

Need to transfer NC files from Fusion 360

Purchased a USB/RS232 cable, specifically an "EZSync 14C"

Down loaded the driver and the Device Manager says its on COM3 and working properly.
It says this if the cable is connected to the PC and does not matter whether its connected or not to lathe control.

When I post a program I cant find any option for sending to that device or machine?

Obviously the cable is there and seen by the manager but from there its no where to be found?

Mfg of cable says I need "File sharing software"?

I believe I have the control parameters set properly and I am sure there may be additional settings that need to be adjusted but I would think it would at least try sending to machine and give an error?

At least I would know I am on the correct path

What file sharing software should I get?


Jan 2, 2013
Gilbert, AZ
I use Tera Term.
I've never been able to figure out how to punch back to the PC from the machine control. But, it has been reliable for sending.


Jul 20, 2015
DNC4U has been good for me. They have a free trial. And I've gotten good support from them also.