Omron NJ501-1400 User Manual page 395

Event name Actual Position Overflow
Meaning The number of pulses for the actual position overflowed.
Source Motion Control Function Module
Error attributes Level
Effects User program
System-defined Variable
variables
_MC_AX[*].Obsr.Active
Cause and Assumed cause
correction
The actual position when converted to
pulses exceeded the upper limit of
signed 40-bit data.
Attached None
information
Precautions/ None
Remarks
Event name Actual Position Underflow
Meaning The number of pulses for the actual position underflowed.
Source Motion Control Function Module
Error attributes Level
Effects User program
System-defined Variable
variables
_MC_AX[*].Obsr.Active
Cause and Assumed cause
correction
The actual position when converted to
pulses exceeded the lower limit of
signed 40-bit data.
Attached None
information
Precautions/ None
Remarks
NJ-series CPU Unit Motion Control User's Manual (W507)
Source details
Observation Recovery
Continues. Operation
Data type
BOOL
Correction
Correct the program so that the target
position is well within the pulse num-
ber limit so that the actual position
does not exceed the pulse number
limit for the instruction. Or, change the
electronic gear ratio settings. To
recover from the overflow, change the
current position or perform the hom-
ing operation.
Source details
Observation Recovery
Continues. Operation
Data type
BOOL
Correction
Correct the program so that the target
position is well within the pulse num-
ber limit so that the actual position
does not exceed the pulse number
limit for the instruction. Or, change the
electronic gear ratio settings. To
recover from the underflow, change
the current position or perform the
homing operation.
11 Troubleshooting
Event code 64540000 hex
Axis Detection
timing
--- Log category
The position is not updated, but motion continues.
Name
Axis Observation Occurrence
Prevention
Check the gear ratio setting and the
target position setting value, and
make sure that the converted number
of pulses does not exceed the range
of signed 40-bit data. Allow some lee-
way.
Event code 64550000 hex
Axis Detection
timing
--- Log category
The position is not updated, but motion continues.
Name
Axis Observation Occurrence
Prevention
Check the gear ratio setting and the
target position setting value, and
make sure that the converted number
of pulses does not exceed the range
of signed 40-bit data. Allow some lee-
way.
Continuously
System
11
Continuously
System
11-49