
B–63002EN/01
20. FUNCTIONS FOR HIGH SPEED
CUTTING
NC FUNCTION
231
When the remote buffer is connected to the host computer or input/output
device via serial interface, a great amount of data can be sent to CNC
consecutively at a high speed.
CNC
RS–232C / RS–422
Remote
buffer
Host
computer
Input/output
device
The remote buffer enables the following operations:
When connected to the host computer online, it performs DNC
operation with high reliability and at a high speed.
The CNC program and parameters can be down-loaded from the host
computer.
When connected to an input/output device, it enables DNC operation,
and various data can be down-loaded. The following input/output
devices can be connected.
FANUC PPR
FANUC FA Card
FANUC FLOPPY CASSETTE
FANUC PROGRAM FILE Mate
FANUC Handy File
Hereafter, the device to which the remote buffer is connected is called
the host computer.
Electrical interface
The following two types of interface are prepared as standard
specifications.
RS-232C Interface
RS-422 Interface
RS-233C RS-422
Interface
Serial voltage interface (start-
stop)
Balanced transmission serial
interface (start-stop)
Baud rate 50 to 19,200 BPS 50 to 86,400 BPS (*1)
Cable
length
4800 BPS or less
9600 BPS
Varies according to I/O device.
Approx. 800 m (9600 BPS or
less)
19,200 BPS or more
20.5
REMOTE BUFFER
20.5.1
Remote Buffer (Only at
1–path Control)
Explanations
Interface between the
remote buffer and host
computer