Mitsubishi Electric Q173CPU User Manual page 64

2 SYSTEM CONFIGURATION
O
U
T
(4) I/O allocations
It is possible to allocate unique I/O No.s for each Motion CPU independently of
the PLC's I/O No.s. (I/O No.s are unique between the Q series PLC CPU within a
given system, but the I/O No.s of the Motion CPU are unique for each Motion
CPU.)
ON/OFF data input to the Motion CPU is handled via input devices PX
ON/OFF data output from the Motion CPU is handled via output devices PY
It is not mandatory to match the I/O device PX/PY No.s used in the Motion
program with the PLC I/O No.s; but it is recommended to make them match as
much as possible.
The following figure shows an example of I/O allocation.
0 1
Q25H Q25H Q173
CPU CPU CPU(N)
CPU No.1
CPU No.2 CPU No.3
(Note-1) : When the number of modules to be installed is 32 points.
(Note-2) : When the PX/PY No. does not match the PLC I/O No.
Refer to the Programming Manual of the operating system software about the I/O
allocation setting method,.
Refer to the QCPU User's Manual(Function Explanation, Program Fundamentals)
about the I/O allocation setting method of the Qn(H)CPU.
POINT
I/O device of the Motion CPU can be set in the range PX/PY000 to PX/PYFFF.
The real I/O points must be 256 points or less. (As for the I/O No., it is possible not
to continue.)
I/O Allocations
2 3 4
QX41 QY41
X0 to X1F Y20 to Y3F
Module of Module of
control control
CPU No.1 CPU No.1
2 - 45
5 6 7
QY41 Q172LX QX41
Y40 to Y5F Intelligent PX0 to PX1F
32 points
(X60 to X7F) (Y80 to Y9F)
Module of Module of Module of
control control control
CPU No.2 CPU No.3 CPU No.3
, while
.
8 9
QY41 QY41
PY20 to PY3F YC0 to YDF
(YA0 to YBF)
Module of Module of
control control
CPU No.3 CPU No.1