Cooperative operation system for numberical control apparatus

Abstract

Disclosed is a cooperative operation system for a numerical control apparatus composed of numerical control apparatuses (CNCs) used in a transfer line. Each of CNCs (10, 20) is provided with a CNC control unit (11, 21), a switching circuit (12, 22) connected to the CNC control unit (11, 21) for switching an I/O signal, a RAM (13, 23) connected to the switching circuit (12, 22) for storing the I/O signal, a programmable machine controller (PMC) (16, 26) connected to the RAM (13, 23), and a serial transfer control circuit (15, 25) connected to the RAM (13, 23) for transferring the I/O signal to the another CNC. The PMC (16) receives or transmits the I/O signal of another CNC (20) through the serial transfer control circuit (15). The CNC (10, 20) can input and output the I/O signal thereof through the transfer control circuit (15, 25) to thereby increase the signal transfer speed, and thus a cooperative operation can be carried out at a high speed. Further, since the PMC (16) can directly receive the I/O signal of the another CNC (20) through the serial transfer control circuits (15, 25), a complex control can be carried out.

Dependencies are inferred from the claim text.