5-2
Section
Setting Data Links
68
5-1-2 Differences Between Manual and Automatic Setting
Item
Manual setting
Automatic setting (See note 1.)
Determination of nodes
participating in a data
link
Determined by setting data link tables.
Determined by the data link parameters
set in the data link startup node (the
node used to start the data links).
Data link settings
Set in data link tables that are set in the
nodes to participate in data links.
Determined by the data link parameters
set in the data link startup node (the
node used to start the data links).
Data link areas 1 and 2
In each node, area 1 and area 2 are
selected from bit areas (IR, CIO, and LR
Areas) and Data Memory (DM and EM
Areas).
However, areas 1 and 2 cannot be set in
the same memory area.
Area 1 is selected from bit areas (IR,
CIO, and LR Areas) and area 2 is
selected from Data Memory (DM and EM
Areas).
Refresh starting word
Can be set freely in each node.
Can be set freely.
Data link status area
Selected from bit areas (IR, CIO, and LR
Areas) and Data Memory (DM and EM
Areas) in each node.
Selected from bit areas (IR or CIO
Areas).
Refresh sequence
Can be set in each node freely.
Node addresses are in ascending order.
Data reception
It is possible to set in each node whether
the entire data or a part of the data sent
from another node is received. It is also
possible to not receive the data sent from
a specific node. (See note 2.)
The entire data sent from each node that
is participating in the data link is
received.
Data transmission
The send sizes can be set freely in each
node. It is also possible for certain node
not to send data. (See note 2.)
In area 1 and area 2, data send sizes are
the same in each node.
Note
1. Automatically set data links cannot be started from the Controller Link Sup-
port Board.
The Controller Link Support Board can participate in automatically set data
links.
2. If data links are manually set, send/receive area can be selected in each
node, allowing send/receive groups to be created within the network in area
1 and area 2, as shown below.
#1
#1
#3
#1
#2
#3
Area 1
#2
#2
#4
#4
#3
#4
Group
Group
5-2
Setting Data Links
5-2-1 Selecting Manual or Automatic Setting
Specify either the manual or automatic data link mode in the following DM pa-
rameter area of the PC’s CPU Unit of the startup node, using a PC Programming
Device.
Note
1. The data link mode can only be specified in the Controller Link Unit. Refer to
the Controller Link Units Operation Manual (W309) for more details.
2. When the Controller Link Support Board has been set as the startup node,
data links must be manually set.
3. A data link mode can be set in a data link startup node only. The data link
mode setting is determined by the data link mode of the startup node even if
the data link mode settings of the nodes participating in the data links are
different from the settings in the startup node.
