[marsheng]

I have not tested the cable (my cable is from the DNC kit, I fully expect it to work) to see if 3 or more wire required for drip feed, my concern was the ability to copy programs to memory!

I believe that drip feed needs 5 wire.

[servtech]

087 is a Buffer Overflow. It means the PC has sent more than 10 characters after the NC has sent the XOFF. Try turning off the FIFO buffers on your COM port. Go to Control Panel, System, Hardware, Device Manager, Ports, and right click on the COM port you are using. Click Properties, go to the Port Settings tab, click Advanced.

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Can anyone please explain what alarm 87 on a Fanuc OM means ?.

Alarm 087

When entering data in the memory by using Reader / Puncher interface, though the read terminate command is specified, input is not interrupted after 10 characters read.

Our programs look like the following;

%
O0010(ABC-123-ABC-A.123)
(ABC-123-ABC-A.123)

N10
N20
N30
...
...
M30
%

087 is a Buffer Overflow. It means the PC has sent more than 10 characters after the NC has sent the XOFF. Try turning off the FIFO buffers on your COM port. Go to Control Panel, System, Hardware, Device Manager, Ports, and right click on the COM port you are using. Click Properties, go to the Port Settings tab, click Advanced.

[marsheng]

I'm not so sure that 087 is an exact alarm. I think it merely means that something is wrong.

I can download the parameter file which is very long with 3 wires, no hand shaking without a problem.

I can then send a 10 line program and get an error.

In my case, I was either writing to the 9000+ area of my program, which I hadn't enabled or the format of the file was wrong.

Take 087 with a pinch of salt, not only buffer overflow..