Omron SYSMAC 3G8F7-CLK12-E Operation Manual page 81

What Are Data Links?
Manual Setting Options
Automatically Setting Data Links
The following options can be set when manually setting data links.
Offsets
Data of only the specified number of words can be received starting from the
specified word position. The starting word is set as an offset from the beginning
of the send data. The following is an example.
Area 1
Area 2
Easy Setting: "Set All"
The send data areas of all nodes can be set to the same size (same as for auto-
matic setting described next).
Note Easy Setting appears as "Set All" on the Controller Link Support Board screen.
Example
Area 1
(Bit areas)
Area 2
(Data memory)
Automatic setting can be used to create simple data links.
• Using a Programming Device (such as a Programming Console), set the auto-
matic data link mode in the DM parameter area of the startup node.
• Area 1 can be selected from bit areas (i.e., IR, CIO, and LR areas) and area 2
can be selected from Data Memory.
• A computer cannot be used as the startup node if data links are being automat-
ically set. When automatically setting data links, computers can only partici-
pate in the data links.
• The maximum number of send/receive words is 8,000 when data links are au-
tomatically set, even for computers. This is because computers relay on the
Controller Link Unit settings in the startup node.
• In areas 1 and 2 send areas for each node are of the same size.
• Send nodes are in the same ascending order as node numbers.
• It is not possible to receive only a part of send data.
Specified position in relation to the leading word
# 1 # 2
# 1
# 1
# 2
Specified number of words
Specified position in relation to the leading word
# 1
# 1
# 1
#2
Specified number of words
Node #1 Node #2
# 1
# 2
# 3
# 1
# 2
# 3
Section
Node
#3
# 1 # 1
# 2 # 2
# 3 # 3
# 1 # 1
# 2 # 2
# 3 # 3
5-1
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