FANUC Series 16/18/160/180-Model C Connection Manual (Hardware)

B–62753EN/01
6. CONNECTION OF I/O UNITS TO
MACHINE INTERFACE
123
[Fuses]
FU1 (3.2 A) : Used for external 24–V input.
(Order number : A02B–0120–K104)
FU2 (5.0 A) : Used for +5 V on the PCB.
(Order number : A02B–0200–K103)
[Variable resistors]
VR1 and VR2 : Factory–set by FANUC. The machine tool builder
need not adjust these resistors.
[Setting pin]
CP1 : Used to specify whether the CNC will be notified of
a DO signal error as a system alarm (see Section
6.6.2).

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