8 Troubleshooting
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NX-series Analog I/O Units User’s Manual for Analog Input Units and Analog Output Units (W522)
Event name Unit Under Range for Channel 5 Event code 64FC 0000 hex
Meaning The analog input data for input channel 5 went below the lower limit of the input range. Or, the analog output
data for output channel 5 went below the lower limit of the output range.
Source Depends on where the Support
Software is connected and the
system configuration.
Source details NX Unit Detection
timing
Continuously
Error
attributes
Level Observation Log category System
Recovery Reset error in the NX Unit.
Effects User program Continues. Operation If the input data goes below the input range, the con-
verted value will be the lower limit of the input range.
If the output data goes below the output range, the
analog output will be the lower limit of the output
range.
Sys-
tem-defined
variables
Variable Data type Name
None --- ---
Cause and
correction
Assumed cause Correction Prevention
The analog input data went below
the lower limit of the input range.
Or, the analog output data went
below the lower limit of the output
range.
Find the reason for going below
the lower limit of the input or out-
put range and make suitable cor-
rections.
Find the reasons for going below
the lower limit of the input or out-
put range and take suitable pre-
ventive measures.
Attached
information
None
Precautions/
Remarks
You can change the event level to the minor fault level. If you change the level to the minor fault level, the
Recovery column above will be changed to “Reset error in the NX Unit.”
Event name Unit Under Range for Channel 6 Event code 64FD 0000 hex
Meaning The analog input data for input channel 6 went below the lower limit of the input range. Or, the analog output
data for output channel 6 went below the lower limit of the output range.
Source Depends on where the Support
Software is connected and the
system configuration.
Source details NX Unit Detection
timing
Continuously
Error
attributes
Level Observation Log category System
Recovery Reset error in the NX Unit.
Effects User program Continues. Operation If the input data goes below the input range, the con-
verted value will be the lower limit of the input range.
If the output data goes below the output range, the
analog output will be the lower limit of the output
range.
Sys-
tem-defined
variables
Variable Data type Name
None --- ---
Cause and
correction
Assumed cause Correction Prevention
The analog input data went below
the lower limit of the input range.
Or, the analog output data went
below the lower limit of the output
range.
Find the reason for going below
the lower limit of the input or out-
put range and make suitable cor-
rections.
Find the reasons for going below
the lower limit of the input or out-
put range and take suitable pre-
ventive measures.
Attached
information
None
Precautions/
Remarks
You can change the event level to the minor fault level. If you change the level to the minor fault level, the
Recovery column above will be changed to “Reset error in the NX Unit.”
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