Omron CVM1-CLK21, Operation Manual

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Status Area and Troubleshooting Section 9-2
Node Cannot Participate
in Data Link The following table describes the LNK and M/A indicators when a node can-
not participate in the data links.
Data link participation depends on the Controller Link Unit operating normally
and participating in the Network. Refer to Troubleshooting with RUN, ERC,
ERH and INS Indicators earlier in this section and check Unit operation before
using the following table.
Data Link Cannot be
Stopped Stopping the data link depends on the Controller Link Unit 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 lit (indicating
active data links). Data links cannot be stopped from nodes which do not have
active data links.
9-2 Status Area and Troubleshooting
The status of the Unit and the communications status of the Controller Link
Unit is recorded in the Status Area of the PC. The cause of errors can be
found by searching the Status Area. The Status Area can be read using a Pro-
gramming Console, the SYSMAC Support Software, or the Controller Link
Support Software.
This section explains the contents of the Status Area and tells how to trouble-
shoot errors recorded there.
Indicators Probable cause Probable remedy
LNK M/A
Lit --- Data link operating normally. ---
Flashing Lit When manual setting is used,
there is an error in the data link
table. Refer to 5-2-2 Manual Setting
and remake the data link table.
Flashing Not lit When automatic setting is
used, the data link parameters
at the startup node are incor-
rect for the local node (the
data link area is out of range
for the local node.) Refer to 5-2-4 Automatic Set-
ting: “Select All”, reset the
parameters for the startup
node DM Area so that the local
node can participate in the
data link, and then restart the
data link.
Not lit Lit When manual setting is used,
there are no data link tables
set for the local node. Set data link tables for the
local node.
Not lit Not lit When automatic setting is
used, the startup node is not
set to participate in the data
links. Stop the data links, remake
and set the parameters in the
startup node’s DM Area, and
then restart the data link.