Omron PROFINET IO CJ1W-PRM21 Operation Manual page 143

Troubleshooting the Network
Troubleshooting IO
Devices
/i
LED Indicators
Output Data Valid.
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.
Missing IO Devices will be marked will be marked Red.
IO Devices that signalled an alarm will be Yellow.
The standard PROFINET alarms are implemented:
• Pull Module
• Plug Module
• Plug Wrong Module
• Other
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
outputs to a safe state.
The IO Controller handles the state of the
output data depending on the setting if it
is:
• PLC 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 PLC program.
Figure 8.3: IO Device status
Section 8-3
127