Omron CJ1W-FLN22, Operation Manual, Page: 94 / 277

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Setting Data Link Tables Section 5-2
quired between the data in Area 1 and Area 2, use refreshing of the data
in Area 1 as a trigger before accessing data from Area 2.
2. Make sure that the data link tables are correct and confirm that the equip-
ment will not be adversely affected by the data link table settings before
starting the data links. Incorrect data link tables may result in unexpected
operation.
3. If the total number of words in Area 1 and Area 2 for setting a single node
exceeds 7,677 words, the data for the corresponding node will be re-
freshed over two scans of the CPU Unit. If the setup area of at least one
node in the network exceeds 7,677 words, the data for that node is split
and refreshed over two cycles. The data for the corresponding node will be
split from the 7,678th word counted from the beginning of Area 1.
5-2 Setting Data Link Tables
5-2-1 Setting Data Link
The method for setting Data Link is explained by means of the CX-FLnet or
FL-net Unit Support Software.
Note 1. The CX-FLnet or FL-net Unit Support Software, Support Software de-
signed especially for OMRON FL-net Units, is used to set Data Link tables.
2. To enable the Data Link table settings once they have been made from the
CX-FLnet or FL-net Unit Support Software, it is necessary to either turn the
PLC power OFF and back ON again or restart the FL-net Unit.
#1
#2
#3
#4
#1
#2
7,677 words max.
Refreshed in first cycle
Refreshed in second cycle
7,678
words
max.
At least one node has 7,678 words or more.
7,677 words
Refreshed in
first cycle
Refreshed in
second cycle
Split at 7,678th word for refreshing
(refreshed over two CPU cycles)
Data Refresh when a Single Node's Setup Area Is More than 7,677 Words
Each node has less than 7,677 words