I'm trying to load/ unload form a fanuc series 16i, 18i, and 180i. I'm having trouble and I think it may be the 4gb compact flash card that I'm trying to use. Has anyone had this problem and if so what size memory card should I use? I suspect the machine isn't recognizing that size of card. Thanks

you may try to format it thru your computer as fat 32
thats what we did
just an idea

Tried that already with no sucess but thx alot for the input. I'd try a smaller memory card but non of the pc stores or big box stores sell em. They only have the larger memory cf cards.

PC cards over 2gb will often have read write errors with the fanuc controls, the type I use is p/n BNR-02-MHSR ordered through digikey.com

Yes, your suspicion is correct. I would suggest nothing over 1gig though. 2 gig can at times be hit or miss (in my endeavors) I personally use a 128MB.

Same problem here
we got a used machine and had to have fanuc come out to work out the rs-232 issues,turns out the flash card loads 15 times faster,even at this reduced write speed!
First, we bought and tried a sandisk ultra-2 2 gb with a write speed of 100x and it wouldnt work,found an older 1 with 15 mb/s write speed and that works fine,i use it in a compact flash
adapter.
I was told and has been true so far the memory is not the factor,but its is the write speed!
Good luck