Omron CJ1W-PNT21 Operation Manual page 130

Troubleshooting using the IO Controller indicators
Indicator status
MS NS COMM 100M
OFF OFF OFF
ON OFF OFF
(green)
ON Flashing OFF
(green) (green)
ON Flashing ON
(green) (green) (yellow)
ON Flashing ON
(green) (green) (yellow)
ON ON ON
(green) (green) (yellow)
8-2-3 Troubleshooting Errors Occurring in the IO Controller Unit
116
/i
7-segment
OFF - - Booting and initializing with the
PLC
OFF r Valid configuration detected
dot flashing
OFF r PROFINET IO core software
dot flashing started
OFF r Relations to PROFINET IO
dot ON Devices are set up
ON r Data Exchange with at least one
(yellow) dot ON IO Device
ON r Data Exchange with at all
(yellow) dot ON configured IO Devices
On smaller PROFINET IO Networks the sequence from starting the
PROFINET IO core software to being in full Data Exchange with all the IO
Devices can be very fast that the individual steps can not be distinguished.
Unit errors are errors which occur at starting or normal operation of the system
and which prevent the Unit from functioning correctly in the PLC system.
Usually these errors also cause the CS/CJ PLC CPU ERR/ALM indicator to be
lit or flashing. For more information on error indications in the PLC, refer to the
CS1 Series CPU Unit Operation Manual (W339) or the CJ Series CPU Unit
Operation Manual (W393) for more details.
Network/Unit status
Section 8-2
Comments
Bootup and initialization with the
PLC in progress.
Restart the PROFINET IO
Controller unit if this status
continues for an extended period
of time. Replace the CPU Unit
and/or PROFINET IO Controller
Unit if the problem is not corrected
by restarting.
The PROFINET IO Configuration
downloaded from the configuration
tool is evaluated during startup of
the unit.
The PROFNET IO Controller has
started its core communication
software and is ready to start
communication with PROFINET
IO Devices.
Before PROFINET IO
Communication is fully running a
relation between each IO Device
and the IO Controller is
established.
At least one IO Device is
exchanging IO Data with the IO
Controller
All configured IO Devices are
detected by the IO Controller and
to all IO Data Exchange is
esthablised.