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MELSEC-Q
3 SPECIFICATIONS
(b) Using direct access to link devices
The refresh time can be reduced by directly accessing link devices that are
less frequently used by the host and excluding them from the refresh range.
(Refer to Section 7.1)
CPU
Link refresh
Network module
Link refresh
Direct access
Direct access
Range of
sending
to other
stations
Range of
receiving
from other
stations
Less frequently used link devices
(read/write only as needed)
Frequently used link devices
(read/write always required)