The automatic choice of the working program is realized by
connecting the direct control bus of the DNC working program
(Distribute Numerical Control) with the control lathe system of
direct DNC computer with a PROFIBUS DP SLAVE card. To
make it possible to create another computer connection between
the direct FANUC robot RJ3iB (MASTER) controller and EMCO
lathe, it was necessary to add to the lathe steering system another
computer which has a PROFIBUS DP SLAVE card and installed
DNC program in. To ensure the possibility of connecting
additional systems to the computer robot manufacturing center
LAN, during configuration the PROFIBUS DP LAN, it was
predicted there would be a need for collaboration with an
additional PLC FANUC VersaMax controller. The mutual
information exchange between the PLC controller and direct
FANUC robot RJ3iB controller is realized by feedbacks through
DPM1 in “OPERATE” mode. Fig. 7. shows that computer
structure in an analyzed lathe center. Worth notice is the
redundancy of the information flow paths between CNC lathe and
direct robot (MASTER)