Mitsubishi Electric Q172CPU User Manual Page 64

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2 SYSTEM CONFIGURATION
(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
, while
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.
812345670
I/O Allocations
CPU No.1
9
Q25H
CPU
O
U
T
CPU No.2 CPU No.3
Module of
control
CPU No.1
QY41
PY20 to PY3F
(Y80 to Y9F)
(X60 to X7F)
QX41
X0 to X1F
Q25H
CPU
Q173
CPU(N)
QY41
Y20 to Y3F
QY41
Y40 to Y5F
Q172LX
Intelligent
32 points
QX41
PX0 to PX1F
QY41
YC0 to YDF
(YA0 to YBF)
Power supply
module
Module of
control
CPU No.3
Module of
control
CPU No.2
Module of
control
CPU No.3
Module of
control
CPU No.3
Module of
control
CPU No.1
Module of
control
CPU No.1
(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.)
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