Checking Data Link Status; Led Indicators; Data Link Status Area - Omron C200HW-CLK21 Operation Manual

Checking Data Link Status

Issuing the FINS Command from CVM1, CV-series, CS/CJ-series, and CQM1H-series PLCs
5-4 Checking Data Link Status
5-4-1

LED Indicators

CS-series PLCs
CLK21-V1
Make sure that the LNK
indicator is ON at nodes
participating in the active data
links.
5-4-2

Data Link Status Area

156
CVM1, CV,
CS/CJ, or
CQM1H
Data links can be stopped by sending the FINS command "STOP." The node
to which the FINS command is issued must be participating in the data link.
There are two methods for checking the status of active data links:
• Check the LED indicators on the front of the Units.
• Check the data link status area.
Check the LINK and M/A indicators on the front of the unit.
CJ-series PLCs C200HX/HG/HE PLCs CVM1 and CV-series PLCs
CLK21-V1
RUN ERC INS SD
TER ERH M/A LNK RD
Name Color
LNK Yellow
(data link)
M/A Yellow
(data link
mode)
The LNK indicator will be lit at all node participating in the data links as long
as operation is normal. The data link mode (manual/automatic) can be
checked using the M/A indicator. See 9-1 Troubleshooting Using Indicators for
details.
The data link status area can be used to check for errors when data link does
not operate normally even though no abnormality has been detected by the
PLC's CPU Unit or the Controller Link Unit. The data link status area contains
the data link status information shown below.
The number of words used for data link status and the information that is
reflected depends on the setting (8-bit or 4-bit format) for the data link status
storage format specification in the DM Parameters Area, as shown in the fol-
lowing diagram.
See 9-2 Status Area and Troubleshooting for troubleshooting procedures and
see Data Link Status Storage Format (CS/CJ Series Only) for details on set-
ting the data link status storage format in the DM Parameters Area when
using CS- and CJ-series PLCs.
FINS command:
RUN/STOP
CLK21
RUN TER
ERC ERH
M/A
INS LNK
SD RD
Status
ON Participating in data links.
Flashing Data link table setting error
OFF Not in data links or data links are inactive.
ON Manual
OFF Automatic
Section 5-4
Node in data links
CQM1H-series PLCs
CLK21
RUN TER
ERC ERH
INS M/A
SD RD LNK
Contents
Note: This indicator will
always be OFF when the
data links are not active.