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

6. CONNECTION OF I/O UNITS TO
MACHINE INTERFACE
B–62753EN/01
68
The CNC can be combined with the units shown in the table below as I/O
units for the machine interface.
The I/O units can be classified into two types: the I/O units tailored to the
FANUC I/O Link, and the built-in I/O unit. The I/O units for the FANUC
I/O Link are installed separately from the control unit, and connected with
the control unit using the dedicated serial FANUC I/O Link.
As shown in the figure below, two or more units can be installed
separately. By placing the interface unit and connection unit for the
operators panel near the operators panel, an operators panel that
inputs/outputs many signals can be interfaced easily.
The FANUC I/O Unit-MODEL A is a modular-type I/O unit. It selects
necessary modules from various I/O modules provided by FANUC
according to the application and uses them as one external unit. The
FANUC I/O Link transfers data between the control unit and such an
external unit at a high speed. The states of the input signals from the
machine are transferred to the control unit at regular intervals. The states
of the output signals from the control unit are transferred to external units
at regular intervals. (Note that this manual covers only part of the uses
that the FANUC I/O Link has. For example, although it can be used for
connecting the 1-axis CNC FANUC Power Mate or cell controller
FANUC F-D Mate, this manual does not mention it. This is because the
purpose of this manual is to describe the I/O units having machine
interface.)
The built-in I/O unit is an I/O card to be inserted into a slot in the control
unit. Although the built-in I/O unit is less flexible than the FANUC I/O
Unit MODEL A, it is available in four types depending on the number of
DI/DO points.
Table 6.1 Machine interface I/O
Type Name DI/DO points
FANUC I/O Link
com
p
atible I/O
FANUC I/O Unit–MODEL A
Max. 256/256 per group
Max 1024/1024 in total
com atible
I/O
Machine operator’s panel
interface unit
Max
.
1024/1024
in
total
Operator’s panel connection unit
Built–in I/O I/O Card Max. 156/120 per card
Up to two cards can be
used.
Cautions
1. To turn off the power to the motor, input the emergency stop
signal to both the CNC control unit and servo system
simultaneously. For details of applying the emergency stop
signal to the servo system, refer to FANUC CONTROL
MOTOR AMPLIFIER Series (B–65162E/02).
2. Input signals X008.0 to X008.7 (X1008.0 to X1008.7 when
using the built–in I/0 card) must be connected in a sink
layout, because these signals include the emergency stop
signal.
6.1
GENERAL

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