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(b) Precautions for using remote station I/O numbers
• Setting for future extension
When the input (X) and output (Y) of the CPU module are used for the I/O numbers on the remote station,
consider future extension of I/O modules and/or intelligent function modules on the CPU module side.
• When CC-Link IE Field Network, MELSECNET/H, or CC-Link is used
Assign I/O numbers for the refresh-target devices (in the CPU module) of CC-Link IE Field Network or
MELSECNET/H so that they do not overlap with those for the CC-Link remote stations.
● When network parameter setting has not been made in the CC-Link system, X/Y 1000 to 17FF (2048 points) are
assigned to the CC-Link system master/local modules of lower numbers.
● There are no restrictions on the I/O number assignment order for the CC-Link IE Field Networks, MELSECNET/H remote
I/O networks, CC-Link.
● Free space can be provided in the area for the CC-Link IE Field Network remote station, MELSECNET/H remote I/O
station, and CC-Link remote station.
X/Y0
X/Y3FF
X/Y400
X/Y4FF
X/Y500
X/Y1FFF
For MELSECNET/H
remote I/O station
Empty
Input/output (X/Y)
For future expansion
I/O numbers that can be used by remote stations
I/O numbers used by I/O modules/intelligent function
modules
When X/Y0 to 3FF (1024 points) are used by I/O modules and/or intelligent function
modules and X/Y400 to 4FF (256 points) are secured for future extension
For CC-Link remote
station
to
to
to
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