73
What Are Data Links?
Section 5-1
• Nodes can be set that only send or only receive data.
• Only part of send data can be received and an offset can be used to spec-
ify the beginning of the desired part.
Manual Setting Options
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 begin-
ning of the send data. The following is an example.
Easy Setting: “Set All”
The send data areas of all nodes can be set to the same size (same as for
automatic setting described next).
Note
Easy Setting appears as “Set All” on the Controller Link Support Board
screen.
Automatically Setting Data Links with Equality Layout
Automatic setting can be used to create simple data links.
• Using a Programming Device (such as a Programming Console), set the
automatic 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
automatically set. When automatically setting data links, computers can
only participate in the data links.
# 1
# 1
# 2
# 1
# 2
# 1
# 1
# 2
# 1
Area 1
Area 2
Specified position in relation to the leading word
Specified number of words
Specified position in relation to the leading word
Specified number of words
Area 2
(Data memory)
N
ode #1
N
ode #2
N
ode
#3
# 3
# 2
# 1
# 3
# 2
# 1
# 3
# 2
# 1
Area 1
(Bit areas)
# 3
# 2
# 1
# 3
# 2
# 1
# 3
# 2
# 1
Example
Summary of Contents for SYSMAC 3G8F7-CLK12-EV1
Page 2: ......
Page 4: ...iv ...
Page 20: ...xx Conformance to EC Directives 6 ...
Page 48: ...28 Applications Precautions Section 1 4 Example CX Programmer Response Timeout Setting ...
Page 68: ...48 Backup Power Supply Wiring Optical Ring Systems Only Section 2 4 ...
Page 74: ...54 Using the C Library Section 3 2 ...
Page 110: ...90 Changing the Data Link Tables with Active Data Links Section 5 5 ...
Page 187: ......