
B–63682EN/01
28. DATA INPUT/OUTPUT
NC FUNCTION
207
The FANUC DNC2 communication protocol enables transfer of various
types of data between the CNC and a PC connected to it, using an
RS–232–C interface.
The features of FANUC DNC2 are described below:
(1)DNC2 complies with the LSV2 communication protocol adopted by
several CNC makers in Europe. It enables software to be developed
easily on a PC. The PC is connected to a FANUC CNC using an
RS–232–C interface. To improve transmission rate, an RS–422
interface can be used in place of the RS–232–C interface.
(2)DNC2 supports point–to–point communication between a FANUC
CNC and a PC. It does not support multi–point communication, in
which more than one PC is connected to a CNC.
PC
Command/response
Response/command
CNC
28.7
DNC2 CONTROL