Event code Event name Meaning Assumed cause
Level
Reference
M
a
j
P
rt
M
i
n
O
b
s
I
n
f
o
840C0000 hex Allowed
Communica-
tions Band-
width per
Unit Exceed-
ed
The total bandwidth
for the connections
that are set or estab-
lished for all of the
EtherNet/IP ports ex-
ceeded the allowed
communications
bandwidth of tag data
links and CIP Safety
communications per
Unit.
• An attempt was made to es-
tablish a connection of com-
munications bandwidth (PPS),
which is the sum of the packet
transmission rates of the tag
data links and CIP Safety com-
munications used for all Ether-
Net/IP ports, and it exceeded
the allowable communications
bandwidth of the Unit.
¡
page
14-39
840E0000 hex Number of
Tag Sets for
T
ag Data
Links Ex-
ceeded
The total number of
tag sets for tag data
links for all
Ethernet/IP ports ex-
ceeds the upper limit.
• The total number of tag sets
for all ports that are set for tag
data links in each Ethernet/IP
port exceeded the maximum
number the product allows.
¡
page
14-40
342C0000 hex Unit Config-
uration Error,
Combined
Use of CIP
Safety and
Tag Data
Link
Tag data link commu-
nications and CIP
Safety communica-
tions cannot be used
together in one NX-
series EtherNet/IP
Unit.
• Setting to use tag data link
communications was made to
the NX-series EtherNet/IP Unit
that is included in the CIP
Safety connection settings.
• The NX-series EtherNet/IP
Unit with tag data link commu-
nications was added to the CIP
Safety connection settings.
¡
page
14-41
54E00000 hex Access De-
tected Out-
side Range
of Variable
An access attempt to
write a value out of
range was detected
for a tag variable that
is used in a tag data
link.
• An out-of-range value was
written by an EtherNet/IP tag
data link to a variable with
range specification. A value
that does not specify an enu-
merator was written by an
EtherNet/IP tag data link to an
enumeration variable.
¡
page
14-42
94010000 hex Tag Data
Link Down-
load Started
Changing the tag da-
ta link settings start-
ed.
• Changing the tag data link set-
tings started.
¡
page
14-42
94020000 hex Tag Data
Link Down-
load Finish-
ed
Changing the tag da-
ta link settings finish-
ed.
• Changing the tag data link set-
tings finished.
¡
page
14-43
94030000 hex Tag Data
Link Stop-
ped
Tag data links were
stopped by the Net-
work Configurator,
Sysmac Studio, spe-
cial instructions or
manipulation of a sys-
tem-defined variable.
Or
, the data link table
was downloaded from
Network Configurator
or Sysmac Studio.
• Tag data links were stopped by
the Network Configurator
, Sys-
mac Studio, special instruc-
tions or manipulation of a sys-
tem-defined variable.
¡
page
14-43
14 Troubleshooting
14-13
NX-series EtherNet/IP Unit User's Manual (W627)
14-4 Checking with the Sysmac Studio, an HMI, and Instructions That Read Error
Status
14
14-4-3 Error Tables
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