Mitsubishi Electric MELSEC L Series User Manual page 76

(2) Data setting method
1.
"Transfer to PLC"
"Transfer to intelligent function module"
2.
If the number of points will be increased for a system expansion in future, for example, set a large number for "RWw/RWr
Setting" in Network Configuration Setting of the master station. Doing so will eliminate the need to change the parameter
setting of the master station at the time of the system expansion. However, increasing the number of points also increases
the processing time.
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Set the auto refresh of the intelligent function module connected to the head module.
Specify the following devices as the devices to be auto refreshed.
Item
In the Network Configuration Setting of the master station, set the number of RWw/RWr points
assigned to the head module.
The number of points should be higher than the number of points set for auto refresh in step 1 above. (Set
the number of points whichever is greater between "Transfer to CPU" and "Transfer to intelligent function
module".)
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Setting range of auto refresh target device
W1000 to W13FF
W0 to W3FF