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25
Applications Precautions
Section 1-4
• Adding Nodes with a Repeater Unit at One End
Before connecting the new nodes to the existing network, always set the poll-
ing/polled node setting in the Controller Link Support Board driver properties
to
Polled
. If the nodes are connected to the existing network with this setting
set to
Polling
, the corresponding node may become the polling node for the
network, which will affect the network in the following ways. After the new
nodes are participating in the network normally, return the polling/polled node
setting to polling node.
• When the data link startup switch of the new node is OFF, all the data
links for the whole network including the existing network will be inactive.
• When the network parameters being used are different from the default
values, the network parameters will return to the default values.
After confirming that the new node has properly joined the network, set the
polling/polled node setting in the Controller Link Support Board driver proper-
ties to
Polling
.
Always set the
Max Node Number set 62
option in the Controller Link Support
Board driver properties of the new node to match the settings of the existing
network. If different settings are used, the network may not be configured cor-
rectly.
When a new node is to be added to a system that is already wired over a long
distance using T-branch lines or Repeater Units, turn OFF the power to the
PCs in the segment where the node is to be added. The power to the PCs in
segments separated by Repeater Units does not need to be turned OFF.
Refer to the
Controller Link Unit Operation Manual
(W309).
Systems with an Existing T-branch Line
Terminating
resistance O
N
Terminating
resistance O
N
Terminating
resistance O
N
CS1W-RPT01
Repeater Unit
N
ewly added nodes
Terminating
resistance O
N
Turn O
N
terminating resistance at
the nodes on both ends of each
segment shown within broken lines.
CS1W-RPT01
Repeater Unit
The power to the PCs of the segment
shown within the dot-dash broken
line does not need to be turned OFF.
The power to the PCs in the
segment shown within the dash
broken line must be turned OFF.
N
ew node to be added
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: ......