Remote Station I/O Number - Mitsubishi Electric MELSEC-Q Series User Manual

5 ASSIGNMENT OF I/O NUMBERS

5.5.2 Remote station I/O number

X/Y0
to
X/YFF
X/Y100
to
X/Y1FF
X/Y200
to
X/Y7FF
5 - 11
In a CC-Link remote I/O system, you can exercise control after assigning the inputs (X)
and outputs (Y) of the Basic model QCPU devices to the I/O and intelligent function
modules of remote stations.
Also, the inputs (X) and outputs (Y) are used as the refresh destinations (Basic model
QCPU side devices) of the link inputs and outputs (LX, LY) of the MELSECNET/H.
Take care not to overlap the I/O numbers of the MELSECNET/H refresh destinations
and the I/O numbers of the CC-Link remote I/O system.
CC-Link
When using Basic model QCPU device input (X) and output (Y) in remote stations, I/O
numbers that succeed the numbers used by the main base unit and extension base
units' input/output modules and intelligent function modules will be allocated.
For example, if X/Y0 to X/YFF are being used by the main base unit and extension
base units' input/output modules and intelligent function modules, then numbers above
X/Y100 can be used by the remote station.
However, the I/O numbers for remote stations should be set in consideration of
additions to the main base unit and extension base units' input/output modules and
intelligent function modules.
(Example) If 256 points from X/Y0 to X/YFF are being used by the main base unit and
extension base units, and 256 points from X/Y100 to X/Y1FF are to be held back for
use with future additions, then the situation shown in the diagram below is to be
observed.
Input/Output (X/Y)
For CC-Link remote
station
POINT
If network parameter setting has not been made in a CC-Link system, 1024 points
of X/Y400 to X/Y7FF are assigned to the CC-Link master/local module of lower I/O
numbers.
Remote
station
I/O numbers being used by the main base unit and
extension base units
Held back for future additions
I/O numbers that can be used by remote stations
MELSEC-Q
Allocation of
Q00CPU input (X) and
output (Y) possible
Remote
station
5 - 11