
B–63083EN/02
9. CONNECTION TO FANUC I/O Link
256
The I/O address maps of the distribution I/O machine operator’s panel are
as follows:
DI space map DO space map
Xm
Override, etc. Yn
Xm+1
Yn+1
Xm+2
General–purpose
DI si
nals
Yn+2
Xm+3
Yn+3
Keyboard (LED)
–p
p
Xm+4 Yn+4
–
DO signals
Xm+5 Yn+5
Xm+6 Yn+6
Xm+7
Keyboard
Yn+7
Xm+8
(key switch)
Xm+9
Xm+10
Xm+11
Xm+12 (first MPG)
Xm+13 (second MPG) MPG
Xm+14 (third MPG)
Xm+15 Not used
With the distribution I/O machine operator’s panel, basically allocate a
group of 16 bytes as a DI area, and allocate a group of 8 bytes as a DO area.
The reason for this is described below. The MPG interface (MPG counter)
uses Xm+12 through Xm+14 of the DI space. These addresses are fixed.
Xm+12 through Xm+14 must be allocated before the MPG interfaces can
be used. So, when using MPG interfaces with the i series, allocate a group
of 16 bytes as a DI area. The value of an MPG counter is directly
processed by the CNC, so the ladder must not use this area.
When MPG interfaces are not used, the DI area may be allocated to other
I/O groups.
9.12.12
Allocation