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Troubleshooting Using Indicators
Section 9-1
9-1-2
Troubleshooting with LNK Indicators
Data Link Cannot be
Started
The following table describes the LNK indicators at the startup node and their
use in troubleshooting when a data link cannot be started.
Starting a data link depends on the Controller Link Support Board operating
normally and participating in the Network. Refer to
earlier in this section and check Board operation before
using the following table.
Node Cannot Participate
in Data Link
The following table describes the LNK indicators when a node cannot partici-
pate in the data links.
Data link participation depends on the Controller Link Support Board operat-
ing normally and participating in the Network. Refer to
earlier in this section and check Unit operation before
using the following table.
Data Links Cannot be
Stopped
The following explanation describes how to use the LNK indicator when the
data links cannot be stopped. Stopping the data links depends on the Control-
ler Link Support Board operating normally and participating in the Network.
Read the above explanations before attempting to stop operation.
Note
Stop the data link from the node at which the LNK indicator is flashing (indi-
cating active data links). Data links cannot be stopped from nodes which do
not have active data links.
Indicators
Probable cause
Probable remedy
LNK
Lit
Data link operating normally.
---
Flashing
There is an error in the data link tables.
When the ERR indicator is flashing, reset the data
link tables.
When manual setting is used, either data link tables
have not been created for the startup node or there
is an error in the data link tables.
Refer to
and set data link
tables for the startup node.
Not lit
Manually set data links are already operating on the
same Network.
Refer to
.
Automatically set data links are already operating on
the same Network.
Refer to
.
Indicators
Probable cause
Probable remedy
LNK
Lit
Data link operating normally.
---
Flashing
When manual setting was used, there is an error in
the data link table.
Refer to
and reset the data link
table.
Not lit
For manual setting, there are no data link tables set
for the local node.
Set data link tables for the local node.
For automatic setting, the startup node is not set to
participate in the data links.
Stop the data links, reset the parameters in the star-
tup node’s DM Area, and then restart the data link.
The Controller Link Support Board cannot become
the start-up node for automatic setting, so set on the
PC to which the Controller Link Unit is mounted. For
details refer to the
Controller Link Units Operation
Manual
(W309)
.
Indicators
Probable cause
Probable remedy
LNK
Not lit
Data link stopped normally.
---
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 ...
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