Omron SYSMAC 3G8F7-CLK13-E Operation Manual page 94

What Are Data Links?
Automatic Setting Data Links with 1:N Allocations
74
• The maximum number of send/receive words is 8,000 when data links are
automatically 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.
• All nodes can be specified to either participate or not participate in the
data link.
• The data link areas are exactly the same and common to all nodes partic-
ipating in the data links.
Note The Controller Link Support Software contains a function called
"Easy Setting" that can be used within the manual data link mode
to register the same data links as automatic setting. This Easy Set-
ting can be used first, and then the send size of each node and oth-
er settings can be changed as required.
This method is used to simplify setting of 1:N allocation data links between
master and slave nodes.
Node 1
1
Area 1
2
3
4
1
Area 2
2
3
4
• There are three types of 1:N allocations.
• Programming Devices (including Programming Consoles) are used to set
the automatic data link mode in the DM Parameter Area of the PC used
as the startup node.
• Node 1 is the master node.
• Areas 1 and 2 can be selected from bit-access areas or the DM Area.
• The send area sizes of the master and slave nodes are the same for each
area.
• Send nodes are in the same ascending order as node numbers.
• All nodes can be specified to either participate or not participate in the
data link.
• The data link areas (data link start words) are common to all nodes partic-
ipating in the data links.
Node 2 Node 3 Node 4
1 1
2 3
1 1
2 3
Section 5-1
1
4
1
4