6 - 51
6 Troubleshooting
NX-series NX1P2 CPU Unit Hardware User’s Manual (W578)
6-2 Troubleshooting
6
6-2-4 Error Descriptions
Event name Number of Mountable NX Units Exceeded Event code 24D00000 hex
Meaning The number of mounted NX Units exceeds the specified value for the CPU Unit.
Source NX Bus Function Module Source details Master Detection
timing
At CPU Unit
power ON, at
Controller reset,
or at NX bus
restart
Error attributes Level Partial fault Recovery Cycle the power
supply to the
CPU Unit or reset
the Controller.
Log category System
Effects User program Continues. Operation • For NX Units within the range of the number of mount-
able Units, I/O communications will not operate, but
message communications can be performed.
• For NX Units outside the range of the number of mount-
able Units, I/O communications will not operate and
message communications cannot be performed.
System-defined
variables
Variable Data type Name
None --- ---
Cause and
correction
Assumed cause Correction Prevention
More than the maximum number of
NX Units are mounted on the CPU
Unit.
Keep the number of NX Units
mounted on the CPU Unit at the spec-
ified number or less.
Mount the specified number of NX
Units or less.
Attached
information
None
Precautions/
Remarks
None
Event name Total I/O Data Size in NX Units Excessive Event code 24D20000 hex
Meaning The total size of I/O data in the mounted NX Units exceeds the maximum specified value for the CPU Unit.
Source NX Bus Function Module Source details Master Detection
timing
At CPU Unit
power ON, at
Controller reset,
or at NX bus
restart
Error attributes Level Partial fault Recovery Cycle the power
supply to the
CPU Unit or reset
the Controller.
Log category System
Effects User program Continues. Operation I/O communications will not operate, but message com-
munications can be performed.
System-defined
variables
Variable Data type Name
None --- ---
Cause and
correction
Assumed cause Correction Prevention
The total size of I/O data in the
mounted NX Units exceeds the maxi-
mum specified value for the CPU
Unit.
Reduce the number of NX Units
mounted on the CPU Unit to keep the
total size of I/O data at the maximum
specified value or less.
Reduce the number of NX Units
mounted on the CPU Unit to keep the
total size of I/O data at the maximum
specified value or less.
Attached
information
None
Precautions/
Remarks
None
To Next Page
Loading...
Need help?
General
