Troubleshooting Using Indicators

 

 

Section 9-1

 

 

 

 

 

 

Indicators

Probable cause

Probable remedy

 

 

 

 

 

 

LNK

M/A

 

 

 

 

 

 

 

 

Lit

---

Data link operating normally.

---

 

 

 

 

 

 

Flashing

---

There is an error in the data

If the ERH indicator is lit, reset

 

 

 

link tables.

the data link tables.

 

 

 

 

 

 

 

 

When manual setting is used,

Refer to 5-2-2 Manual Setting

 

 

 

either data link tables have not

and set data link tables for the

 

 

 

been created for the startup

startup node.

 

 

 

node or there is an error in the

 

 

 

 

data link tables.

 

 

 

 

 

 

 

 

 

When automatic setting is

Refer to 5-2-4 Automatic Set-

 

 

 

used, either the data link

ting and set the automatic

 

 

 

parameters for the startup

parameters for starting the

 

 

 

node have not been set or

data links.

 

 

 

there is an error in the data link

 

 

 

 

tables.

 

 

 

 

 

 

 

 

 

Automatic setting is used with

Use a Controller Link Unit that

 

 

 

1:N allocations, but the device

supports automatic data link

 

 

 

does not support this function.

creation with 1:N allocations.

 

 

 

 

Refer to Automatic Setting on

 

 

 

 

page 129 for details.

 

 

 

 

 

 

Not lit

Lit

Manually set data links are

Stop the manually set data

 

 

 

already operating on the same

links that are operating and

 

 

 

Network.

restart the data links.

 

 

 

 

 

 

Not lit

Not lit

Automatically set data links

Stop the automatically set data

 

 

 

are already operating on the

links that are operating and

 

 

 

same Network.

restart the data links.

 

 

 

 

 

 

 

 

There is an error in the startup

Refer to the PLC’s operation

 

 

 

node PLC.

manual and correct the error. If

 

 

 

 

the error reoccurs, replace the

 

 

 

 

PLC.

Node Cannot Participate

 

 

 

 

The following table describes the LNK and M/A indicators when a node can-

in Data Link

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.

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Omron C200HW-CLK21, CVM1-CLK21, CS1W-RPT01, CJ1W-CLK21-V1, CQM1H-CLK21, CS1W-CLK21-V1 operation manual 286