3-19
3 Error Tables
NJ-series Troubleshooting Manual (W503)
3-1 Errors by Source
3
3-1-2 Errors in the PLC Function Module
5401140B hex Too Many Files
Open
The maximum number of
open files was exceeded
when opening a file for an
instruction.
• The maximum number
of open files was
exceeded when open-
ing a file for an instruc-
tion.
S NJ-series
Instruc-
tions Ref-
erence
Manual
(Cat. No.
W502)
5401140C hex Directory Does Not
Exist
The directory specified for
an instruction does not
exist.
• The directory speci-
fied for an instruction
does not exist.
S Same as
above.
5401140D hex File or Directory
Name Is Too Long
The file name or directory
name that was specified for
an instruction is too long.
• The file name or direc-
tory name that was
specified for the
instruction to create is
too long.
S Same as
above.
5401140E hex SD Memory Card
Access Failed
SD Memory Card access
failed.
• The SD Memory Card
is broken.
• The SD Memory Card
slot is broken.
S Same as
above.
54011800 hex EtherCAT Commu-
nications Error
Accessing the EtherCAT
network failed when an
instruction was executed.
• The EtherCAT network
is not in a usable sta-
tus.
S Same as
above.
54011801 hex EtherCAT Slave
Does Not Respond
Accessing the target slave
failed when an instruction
was executed.
• The target slave does
not exist.
• The target slave is not
in an operating condi-
tion.
S Same as
above.
54011802 hex EtherCAT Timeout A timeout occurred while
trying to access an Ether-
CAT slave when an instruc-
tion was executed.
• Communications with
the target slave timed
out.
S Same as
above.
54011803 hex Reception Buffer
Overflow
The receive data from an
EtherCAT slave overflowed
the receive buffer when an
instruction was executed.
• The receive data from
the slave overflowed
the receive buffer.
S Same as
above.
54011804 hex SDO Abort Error An SDO abort error was
received from an EtherCAT
slave when an instruction
was executed.
• Depends on the speci-
fications of the slave.
S Same as
above.
54011805 hex Saving Packet
Monitor File
An instr
uction for packet
monitoring was executed
while saving an EtherCAT
packet monitor file.
• An instruction for
packet monitoring was
executed while saving
an EtherCAT packet
monitor file.
S Same as
above.
54011806 hex Packet Monitoring
Function Not
Started
A Stop EtherCAT Packet
Monitor instruction was
executed when EtherCAT
packet monitoring was
stopped.
• A Stop EtherCAT
Packet Monitor
instruction was exe-
cuted when EtherCAT
packet monitoring was
stopped.
S Same as
above.
54011807 hex Packet Monitoring
Function in Opera-
tion
A Start EtherCAT Packet
Monitor instruction was
executed when EtherCAT
packet monitoring was
already being executed.
• The Start EtherCAT
Packet Monitor
instruction was exe-
cuted again while the
EtherCAT packet mon-
itoring function was
already in operation.
S Same as
above.
Event code Event name Meaning Assumed cause
Level
Refer-
ence
Maj Prt Min Obs Info