The RS232 posts in this forum for Fanuc machines are fairly universal across the entire Fanuc range. So if you read a few of the RS232 transfer posts you will know more about what is required.
you can connect the machine via a standard RS232 cable wired like this....
Machinery RS232 communications settings for CNC controls including fanuc and mitsubishi
when I say 'standard' I mean a standard CNC transfer cable like the one in the above link not a PC type serial cable.
First you need to check the parameters and see what they are set to.
Parameter 310 to 313 has the stop bits in bit4, baud rate in bits 0, 1, 2 and 3
and bit5 tells it to use Xon/Xoff or not (handshaking)
Parameter 340 sets the input device. Parameter 341 sets the output device.
Because you are new your mind probably just blew up.... don't worry.
Press PARAM button. Use page buttons to navigate to the above parameters.
Type here what you have in parameter 310 to 313 and 340 and 341....
310 to 313 might be something like 00001000 (Xon/Xoff, 1 stop bit, 2400 baud)
340 and 341 should be 2 (I/O device 2.... which is the first RS232 device)