Omron CS1W-SLK11-21 - 06-2004, Manual

Page: 63 / 202

46
Creating Data Links Section 4-5
a. Manual settings: Check that suitable data link tables have been set in
each data link node. Check that data link tables have been deleted for
nodes not participating in the data links.
b. Automatic settings: Check that suitable DM parameters have been set
in the data link startup node.
!Caution
Even if the data link table settings or the DM parameter settings are suitable,
check that there will be no adverse effects on the controlled equipment before
starting or stopping the data links.
4-5 Creating Data Links
Data link tables store information required to run data link functions. The data
link area is created, and data is exchanged, based on the data link tables.
With manual settings, data link tables are backed up in the settings area in the
words allocated to SYSMAC LINK Unit as a CPU Bus Unit in the CPU Unit.
Note Data link areas must be continuous in the CIO Area or the DM Area. You can-
not make settings which leave unused words between the data link areas in
either the CIO Area or the DM Area.
4-5-1 Automatic and Manual Settings
• Automatic settings: Data link tables created automatically from the DM
parameter area settings.
• Manual settings: Data link tables set using Support Software.
Select either automatic or manual generation by specifying the data link mode
in the DM parameter area allocated to the SYSMAC LINK Unit in the DM
Area.
The differences between manually and automatically set data links are out-
lined in the following table.
Item Automatic setting Manual setting
Data link mode setting in
DM parameter area
(D30000 = 100 x unit No.)
Using CIO Area only
Bit 5: 0, bit 4: 1
Using DM Area only
Bit 5: 1, bit 4: 0
Using CIO Area and DM
Area
Bit 5: 1, bit 4: 1
Bit 5: 0
Bit 4: 0
Number of linked words All nodes have the same
number of linked words. The number of words read
and the number of words
written can be set indepen-
dently for each node.
Linkable words The following words are
automatically used:
CIO 1000 to CIO 1063
D00000 to D00127
Any of the words in the
CIO and DM Areas can be
linked.
Number of linkable nodes The number of nodes
linked and the node
addresses are automati-
cally set depending on the
number of words set per
node. Data links can be set for
any portion or all of the
nodes (max.: 62).