5-3SectionL: Data Link
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Differences Set AllAutomatic setting
Data area Can be freely selected for both
areas 1 and 2. Area 1: CIO (IR)
Area 2: DM or EM
Link start word in
areas 1 and 2 Can be freely specified for each area (this is the same for all
nodes).
Can be changed for each node
later. Cannot be changed later.
Send area size Same size for each area
for each node Can be changed for each node
later. Cannot be changed later.
Receive-only Cannot be specified by default. Cannot be specified.
nodes Can be specified by changing
the data link area later.
Send-only nodes Cannot be specified by default. Cannot be specified.
Can be specified by changing
the data link area later.
Node sequence Automatically determined (ascending order)
for data link
areas Can be changed later by
deleting or inserting nodes. Cannot be changed later.
Data link status
words Can be specified in CIO (IR),
DM, or EM. Can be specified only in CIO
(IR).
Press the F6 (Set All) Key at the Node Information Screen to display the follow-ing window.The items are almost the same as the items that are set in the DM parameterarea for automatic setting.
Item Meaning
Area 1 Link Start Word Specify the first word address of area 1.
Area 1 Link Word
Number Specify the number of words in the send area in each
node in area 1.
Area 2 Link Start Word Specify the first word address for area 2.
Area 2 Link Word
Number Specify the number of words in the send area in each
node in area 2.
Status Word Specify the first word of the words in which data link
status is to be stored.
The setting range for each item is as follows: