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6 Troubleshooting
NX-series NX1P2 CPU Unit Hardware User’s Manual (W578)
6-2 Troubleshooting
6
6-2-4 Error Descriptions
Event name NX Unit Initialization Error Event code 85520000 hex
Meaning Initializing an NX Unit failed.
Source NX Bus Function Module Source details Master Detection
timing
At CPU Unit
power ON, at
Controller reset,
at NX bus restart,
or at error reset
Error attributes Level Minor fault Recovery Error reset Log category System
Effects User program Continues. Operation For NX Units with this error, I/O communications will not
operate, but message communications can be performed.
System-defined
variables
Variable Data type Name
None --- ---
Cause and
correction
Assumed cause Correction Prevention
Initialization with the Unit configura-
tion information registered in the CPU
Unit failed.
Connect the Sysmac Studio and
reconfigure the Unit configuration
information in the CPU Unit.
Download the Unit configuration infor-
mation to the CPU Unit and the NX
Unit.
An NX Bus Communications Error
has occurred.
Correct the NX Bus Communications
Error.
Take preventive measures against
the NX Bus Communications Error.
The Channel Enable/Disable Setting
for all channels of the Analog Unit are
set to Disable.
Set the Channel Enable/Disable Set-
ting to Enable for at least one chan-
nel.
For an Analog Unit, set the Channel
Enable/Disable Setting to Enable for
at least one channel.
Initialization of an NX Unit failed. Cycle the power supply to the rele-
vant NX Unit. If this error persists,
replace the NX Unit.
For an Analog Unit, set the Channel
Enable/Disable Setting to Enable for
at least one channel.
Attached
information
Attached information 1: Unit number of the NX Unit where the error occurred
Attached information 2: System information
Precautions/
Remarks
None
Event name NX Unit Startup Error Event code 85530000 hex
Meaning Starting an NX Unit failed.
Source NX Bus Function Module Source details Master Detection
timing
At CPU Unit
power ON, at
Controller reset,
at NX bus restart,
or at error reset
Error attributes Level Minor 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 with this error, I/O communications will not
operate and message communications cannot be per-
formed.
System-defined
variables
Variable Data type Name
None --- ---
Cause and
correction
Assumed cause Correction Prevention
A startup error occurred in an NX
Unit.
Cycle the power supply to the rele-
vant NX Unit. If this error persists,
replace the NX Unit.
None
Attached
information
Attached information 1: Mounting position of the NX Unit where the error occurred
Attached information 2: System information
Precautions/
Remarks
None
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