Mitsubishi Electric Q12DCCPU-V - Page 218

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5.4 CC-Link IE Controller Network Module Access Function
5.4.5 Link data transfer processing time specifications
5
ACCESS VIA NETWORK MODULES
2) Using direct access
By using direct access for link devices that are infrequently used on its own
station and excluding these from the link device refresh ranges, the link device
refresh time can be reduced.
Figure 5.61 Reducing link device refresh time
C Controller
module
Internal link device
buffers
Link device
refresh
Direct access
Direct access
Link device
refresh
CC-Link IE controller
network module
Network range
assignment parameters
Internal
buffer access
Internal
buffer access
C Controller
module
User program
Processing that needs constant
writing
(frequently used link device)
Processing of which data are
written when needed
(infrequently used link device)
Processing that needs constant
reading
(frequently used link device)
Processing of which data are
read when needed
(infrequently used link device)
Range for sending
to another station
Range for receiving
from another station