
9. CONNECTION TO FANUC I/O Link
B–63523EN/03
322
This unit connects FANUC I/O Link master devices’ such as the CNC,
via an I/O Link to enable the transfer of DI/DO signals.
System A System B
CNC or
F–D Mate
+24 V power
supply
I/O Link Slave
CNC or
F–D Mate
+24 V power
supply
I/O Link Slave
FANUC I/O Link
connection unit
DI
DO
DO
DI
I/O Link Master : Series 21i/210i etc.
I/O Link Slave : I/O unit, Power Mate, Series 0–C, etc.
: FANUC I/O Link
Fig. 9.10.1 System which uses FANUC I/O Link connection units
NOTE
This system enables I/O data transfer between two independent FANUC I/O Link master
devices. When the system is adjusted and maintained, the FANUC I/O Link can be operated
with the system power for one of the FANUC I/O Link lines switched off, that is, the link operation
is stopped. In this case, DI data sent from a system at rest consists entirely of zeros. If one
of the links is stopped, either abnormally or normally, it takes up to several hundred milliseconds
for this function to take effect. During this period, that data which exists immediately before the
link stops is sent out. Take this into account when designing your system.
9.10
FANUC I/O LINK
CONNECTION UNIT
9.10.1
Overview