
B–63833EN/03
9. CONNECTION TO FANUC I/O Link
185
RV
+24V
CB150(18)
CB150(50)
CB150(10)
CB150(11)
CB150(12)
CB150(13)
CB150(14)
CB150(15)
CB150(16)
CB150(17)
Xm+2.0
Xm+2.1
Xm+2.2
Xm+2.3
Xm+2.4
Xm+2.5
Xm+2.6
Xm+2.7
Address number
Bit number
CB150 (19),(20),(21)
(22),(23)
+24 V stabilized
power supply
+24V 0V
RV
RV
RV
RV
RV
RV
RV
Pin number
0V
0V
NOTE
Xm+0.0 through Xm+0.7 are DI pins for which a common voltage can be selected. That is, by
connecting the DICOM0 CB150(24) pin to the +24 V power supply, a DI signal can be input with
its logical state reversed. If, however, a cable is connected to ground, it has the same effect
as inputting an ON state DI signal. To prevent such accidents, the connection of the DICOM0
CB150(24) pin to the 0 V power supply is recommended whereever possible.
For safety reasons, the emergency stop signal needs to be allocated to an appropriate bit of
the addresses for which the common voltage is fixed, ranging from Xm+1.0 to Xm+1.7 or from
Xm+2.0 to Xm+2.7. See 9.6.19 for information about how to allocate the emergency stop
signal.
For unused DI pins allocated to the addresses for which the common voltage is fixed (from
Xm+1.0 to Xm+1.7 and from Xm+2.0 to Xm+2.7), the logic is fixed to “0”. For unused pins
allocated to Xm+0.0 to Xm+0.7 for which the common voltage can be selected, the logic is fixed
to “0” when the DICOM0 CB150(24) pin is connected to the 0 V power supply. When the
DICOM0 CB150(24) pin is connected to the +24 V power supply, the logic is fixed to “1”. The
logic of the unused pins allocated to Xm+0.0 to Xm+0.7 is variable when the contact of the
DICOM0 CB150(24) pin is open.