
B–63083EN/02
9. CONNECTION TO FANUC I/O Link
217
Output signals DO00 to DO77 of the operator’s panel connection unit
drive indicators and LEDs on the machine operator’s panel and use NPN
transistor for drivers.
Prepare 24VDC for power supply of indicators and LEDs and connect 0V
to COM3 and COM4. For LEDs, however, 5VDC 300mA output from
the terminal +5N of the connector CM3 can be used. There is no +5N in
the connector CM4; use +5N in connector CM3 as shown below:
Output regulation Load voltage : 24V +20% or less
Load current : 40mA
Transistor output
Connector CM3 Indicator
Connector CM4 Indicator
+5VDC
300mA
max
DO00 to 57
Operator’s panel
connectIon unit
R
+5N
COM3
LED
COM4
DO60 to 77
+
–
Transistor output
R
R
LED
R
24V
stabilized
power
WARNING
When a sink output interface is used, a ground fault in an
output signal causes the output signal to remain on. From
the viewpoint of safety, therefore, FANUC does not
recommend the use of such an interface for output signals.
9.8.2
Output Signal
Regulations for
Operator’s Panel
Connection Unit