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7-13
7 Troubleshooting and Maintenance
CJ-series PROFINET IO Controller Unit Operation Manual for NJ-series CPU Unit (W511)
7-
2 T
rou
blesh
oo
ting
th
e Net
w
o
rk
7
7-2
-3 CPU
Unit’
s ERR
/ALM Indicator
Lit or F
lashing
Use the following table to troubleshoot the network when the DeviceNet Unit is mounted and the CPU
Unit's ERR/ALM indicator is lit or flashing.’
Note
Refer to the NJ-Series CPU Unit Hardware User's Manual (Cat. No. W500) and NJ-Series CPU
Unit Software User's Manual (Cat. No. W501) for more details on these errors.
7-2-3
CPU Unit’s ERR/ALM Indicator Lit or Flashing
Error
Probable Cause
An I/O setting check error occurred.
•
Make sure that the Unit is connected properly.
•
The CPU Bus Unit model registered in the Unit Configuration in the CPU Unit
does not match the actual Unit Configuration. Compare using "Synchronize" oper-
ation and use one of the following procedures.
• Correct the Unit number setting
• Correct the project Unit Configuration and transfer to the CPU Unit
Special Unit access is denied.
•
Make sure that the Unit is connected properly.
•
Restart the Unit. Replace the Unit if it doesn't restart.
An I/O Bus check error occurred.
•
Make sure that the Unit is connected properly.
•
Restart the Unit. Replace the Unit if it doesn't restart.
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Страница 107: ...3 Configuration Software 3 36 CJ series PROFINET IO Controller Unit Operation Manual for NJ series CPU Unit W511 ...
Страница 198: ...Index 1 CJ series PROFIBUS Master Unit Operation Manual for NJ series CPU Unit W509 I Index ...