Omron NJ501-1 Series User Manual page 202

5 Troubleshooting
Event name Unsupported Unit Detected
Meaning An unsupported CJ-series Unit or Power Supply Unit is mounted.
Source PLC Function Module
Error attributes Level
Effects User program
System-defined Variable
variables
None
Cause and Assumed cause
correction
An unsupported CJ-series Unit or
Power Supply Unit was detected.
Attached Attached information 1: Rack number where error was detected, 0 to 3
information
Attached information 2: Slot number where error was detected, 0 to 9
Attached information 3: Profile code that gives the Unit type
Precautions/ This error will not occur for unsupported Power Supply Units that are mounted on Expansion Rack. Make sure that the
Remarks Power Supply Units connected to the Expansion Racks are supported before using them.
* For details, refer to I/O Operation for Major Fault Level Controller Errors on page 5-6.
Event name Too Many I/O Points
Meaning The total number of I/O points in the connected CJ-series Units exceeds the maximum specified value of the CPU Unit.
Source PLC Function Module
Error attributes Level
Effects User program
System-defined Variable
variables
None
Cause and Assumed cause
correction
The total number of I/O points in the
connected CJ-series Basic I/O Units
exceeds 2,560.
Attached Attached information 1: Total number of I/O points in the CJ-series Basic I/O Units
information
Precautions/ None
Remarks
* For details, refer to I/O Operation for Major Fault Level Controller Errors on page 5-6.
5-36
Source details
Major fault Recovery
Stops. Operation
Data type
---
Correction
Remove the unsupported CJ-series
CPU Unit or Power Supply Unit and
replace it with a supported one.
Source details
Major fault Recovery
Stops. Operation
Data type
---
Correction
Set the total number of I/O points in
the CJ-series Basic I/O Units to 2,560
or less.
Event code 2401 0000 hex
I/O bus master Detection
timing
Cycle the power Log category
supply.
Stops.*
Name
---
Prevention
Use a Unit that is supported by this
CPU Unit.
Event code 2402 0000 hex
I/O bus master Detection
timing
Cycle the power Log category
supply.
Stops.*
Name
---
Prevention
Set the total number of I/O points in
the CJ-series Basic I/O Units to 2,560
or less.
NJ-series CPU Unit Hardware User's Manual (W500)
At power ON or
Controller reset
System
At power ON or
Controller reset
System