
B–63523EN/03
9. CONNECTION TO FANUC I/O Link
223
NOTE
When DO is on in the sequence, the ON/OFF state of
DOCOM is directly reflected in the DO state as indicated
above by the dashed box. The +24 V signal to be supplied
to the I/O module must not be turned off during operation.
Otherwise, a CNC communication alarm is issued. Ensure
that +24 V is supplied either when or before the power to the
CNC is turned on, and that +24 V is removed either when
or after the power to the CNC is turned off.
Parallel DO (output signal) connection
A DO load current of twice the level can be obtained by connecting DO
points in parallel and exercising ON/OFF control at the same time in the
sequence. Namely, the maximum load current per DO point is 200 mA.
By connecting two DO points in parallel and turning on the two DO points
at the same time, 400 mA can be obtained. In this case, however, the
leakage current is doubled up to 40 µA when the DO points are turned off.
DOCOM
CB150(01),(33)
DV
+24V 0V
DV
+24 V regulated power supply
Relay