
8.CONNECTION TO FANUC I/O Link B-63943EN/02
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8.2 CONNECTION
With 30i series, the I/O Link interface connector JD51A (for three
channels) is provided on the main board. Also, the JD1A connector
(for the fourth channel) is provided on the additional axis board.
In the I/O there are the master station and its slave stations. The
master is the control unit of the CNC, and the slave is the I/O unit-A.
The slaves are divided into groups, and up to 16 groups can be
connected to one I/O Link. A maximum of two base I/O units can be
connected as a group.
The I/O Link is connected in different ways depending on the types of
units actually used and the I/O points. To connect the I/O Link, the
assignment and addresses of the I/O signals have been made
programmable with the PMC program. The maximum number of
I/O points is 1024.
For slave units, JD1A and JD1B are provided. All units with I/O
Link functions have these connectors. A cable must always be
connected from JD1A of a unit to JD1B of the next unit. Although
JD1A of the last unit is not used and left open, it need not be
connected with a terminator.
The pin assignments of connectors JD1A and JD1B are common to all
units on the I/O Link, and are illustrated on Subsec. 8.2.1. Use the
figures when connecting the I/O Link irrespective of the type of unit.
:
Control unit
JD51A
(JD1A)
I/O256/256 or less per group
I/O1024/1024 or less in total I/O Link
FANUC I/O Link
FANUC I/O Unit-A
2max
Base unit 1 Base unit 2
Control unit
Magnetic
circuit
Max.
16 group
JD1B
JD1A
JD1B
JD1A
JD1B
JD1A
Fig. 8.2 I/O Link connection diagram