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6 Troubleshooting
6 - 102
NJ-series NJ Robotics CPU Unit User’s Manual (W539)
Event name
Negative Limit Input
Event code
54016444 hex
Meaning
An instruction for a motion in the negative direction was executed when the negative limit input was ON.
Source
PLC Function Module
Source details
Instruction
Detection
timing
At instruction
execution
Error
attributes
Level
Observation
Recovery
---
Log category
System
Effects
User program
Continues
Operation
The relevant instruction will end according to specifi-
cations.
System-
defined
variables
Variable
Data type
Name
None
---
---
Cause and
correction
Assumed cause
Correction
Prevention
An instruction for a motion in the
negative direction was executed
when the negative limit input was
ON, or an instruction for a motion
with no direction specification was
executed when the negative limit
input was ON. An axes group
motion control instruction was
executed when the negative limit
input was ON.
Execute an error reset and then
perform a recovery operation in
the positive direction. If the error
occurred during an axes group
motion control instruction, disable
the axes group and then perform
the above operation. If this error
occurs again, check the connec-
tion of the negative limit signal, the
logic setting for the negative limit
input, and the execution condi-
tions for the start command, and
correct any mistakes. Check the
logic settings both in the axis
parameters and in the slave set-
tings.
Check to make sure there are no
problems with the negative limit
signal connection, the logic set-
ting for the negative limit input, and
the execute conditions for the
instruction. Check the logic set-
tings both in the axis parameters
and in the slave settings.
Attached
information
Attached Information 1: Error Location
Attached Information 2: Error Location Details (Rung Number). For a program section, the rung number from
the start of the section is given. For ST, the line number is given.
Attached Information 3: Names of the Instruction and Instruction Instance Where the Error Occurred. If there
is more than one possible instruction, information is given on all of them. Nothing is given if the instruction
cannot be identified.
Attached Information 4: Expansion Error Code (
ErrorIDEx
)
Precautions/
Remarks
If a program is changed after an error occurs, the attached information that is displayed may not be correct.
Summary of Contents for NJ501-4300
Page 13: ...11 CONTENTS NJ series NJ Robotics CPU Unit User s Manual W539 ...
Page 40: ...Revision History 38 NJ series NJ Robotics CPU Unit User s Manual W539 ...
Page 90: ...2 Features of NJ Robotics CPU Unit 2 40 NJ series NJ Robotics CPU Unit User s Manual W539 ...
Page 204: ...5 Vision Robot Integrated Simulation 5 6 NJ series NJ Robotics CPU Unit User s Manual W539 ...
Page 308: ...6 Troubleshooting 6 104 NJ series NJ Robotics CPU Unit User s Manual W539 ...
Page 333: ...I 1 I NJ series NJ Robotics CPU Unit User s Manual W539 Index ...
Page 335: ......