Mitsubishi Electric Q12DCCPU-V User Manual page 216

5
ACCESS VIA NETWORK MODULES
(3) Reducing the link device refresh time
5
- 62 5.4 CC-Link IE Controller Network Module Access Function
5.4.5 Link data transfer processing time specifications
The link device refresh time can be reduced by decreasing the number of refresh
points for the C Controller module. To decrease the refresh points, modify the refresh
and network range assignment parameter settings and use the direct access method
for accessing link devices.
(a) Concept of refresh range (points)
Within the range set with refresh parameters in the <<Parameter settings>> tab of
CC IE Control utility, the areas set in Network range assignment are refreshed.
C Controller module
device buffers
Range to be
actually
refreshed
Range set by
refresh
parameters
POINT
The range from the first address to the last address is set by default in the refresh
parameter setting.
(To bring the setting back to the default, click the Default button on the Refresh
parameter settings screen activated from the <<Parameter settings>> tab of CC
IE Control utility.)
Internal link
Link device
refresh
Applicable
as internal
memory
Link device
refresh
Applicable
as internal
memory
Link device
refresh
Applicable
as internal
memory
Figure 5.59 Concept of refresh range
CC-Link IE controller network module
Network range
assignment parameter
Range set by
Station
network range
No.1
assignment
(Empty)
Station
No.2
(Empty)
Station
No.3