Omron CJ1W-PNT21 Operation Manuals page 176

Indicators
All IO Devices are in Data Exchange and
providing valid input data
IO Device Alarm received
All IO Devices that can process output
data are ready for output data
At least one IO Device that can process
output data is ready for output data.
 Valid Output Data Handling
The IO Controller signals to the IO Devices that the output data it is sends is valid or not. The IO
Devices use the state of the output data to active their outputs. If the output data is set to invalid it is
up to the settings of the IO Device what will happen. Normally the IO Device will go to an fail-safe
state. the PROFINET IO connection between the IO Controller and IO Device will stay intact.
The Toggle User Bit button will be accessible if the setting in the IO Controller Setup item for the
Valid Output Data Handling is set to User Bit Controlled. Now it is possible to manipulate the Device
Variable *_OutDatValCmd. Normally this bit would be controlled by the user program.
Indicators
Output Data Valid
 Troubleshooting IO Devices
The IO Device Status item gives an overview which IO Devices are in Data Exchange and which of
them have reported new errors. By selecting a IO Device or in the New Alarm & Data Exchange
Active Flags Area or by the selected IO Device menu more information about the alarm is displayed.
CJ-series PROFINET IO Controller Unit Operation Manual for NJ-series CPU Unit (W511)
7 Troubleshooting and Maintenance
Description/Correction
The Unit could establish an connection to all configured IO Devices. All these IO
Devices are now in Data Exchange and are providing valid input data.
If one of the IO Devices sets it input data to be invalid then there could be some-
thing wrong with that IO Device. For more information refer to the IO Device Sta-
tus item or to the IO Device DTM itself for further information.
Also when an IO Device is simply turned off it is signalled here also.
One of the IO Devices signalled it has a alarm available. Refer to the IO Device
status item or the IO Device DTM.
The IO Controller has found all configured IO Devices with output data and suc-
cessfully created a connection to them. Now the output data must be activated by
setting the state of the output data to valid. Output data is set valid by the IO Con-
troller depending on the setting Valid Output Data Handling in the IO Controller
Setup item.
It could be or CPU Mode Dependent or User Bit Controlled.
The IO Controller has found at least one configured IO Devices with output data
and successfully created a connection to it.
If the IO Controller can reach at least one but not all IO Devices this could mean
that something is wrong with the network connection to that part of the network. To
see which IO Devices can not be reached refer to the IO Device Status item.
Description/Correction
If set the IO Controller sends valid output data to the IO Devices. The IO Devices
should normally operate their outputs. If not set the IO Devices will set their out-
puts to a safe state.
The IO Controller handles the state of the output data depending on the setting if it
is:
• CPU Mode Dependent
• User Bit Controlled
If IO Devices do not operate their outputs please check the setting of the Valid
Output Data Handling and the according handling in the CPU program.
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