Variable name Meaning Function Data type
Range of
values
Reference
_EIP1_TDLinkOp-
nErr
CIP Communica-
tions1 T
ag Data Link
Connection Failed
Indicates that establishing a tag data link
connection for CIP communications 1
failed.
TRUE: Establishing a tag data link con-
nection failed due to one of the following
causes.
• The information registered for a target
node in the tag data link parameters is
different from the actual node informa-
tion.
• There was no response from the re-
mote node.
FALSE: Other than the above.
Note You can use this system-de-
fined variable only for NX-ser-
ies CPU Units.
BOOL TRUE or
FALSE
page 3-47
_EIP2_TDLinkOp-
nErr
CIP Communica-
tions2 T
ag Data Link
Connection Failed
Indicates that establishing a tag data link
connection for CIP communications 2
failed.
TRUE: Establishing a tag data link con-
nection failed due to one of the following
causes.
• The information registered for a target
node in the tag data link parameters is
different from the actual node informa-
tion.
• There was no response from the re-
mote node.
FALSE: Other than the above.
Note You can use this system-de-
fined variable only for the
NX701 CPU Units and NX102
CPU Units.
BOOL TRUE or
FALSE
page 3-47
_EIP_TDLinkErr Tag Data Link Com-
munications Error
NX-series CPU Units: Indicates that a
timeout occurred in a tag data link con-
nection for CIP communications 1.
TRUE: A timeout occurred.
F
ALSE: Other than the above.
NJ-series CPU Units: Indicates that a
timeout occurred in a tag data link con-
nection.
TRUE: A timeout occurred.
FALSE: Other than the above.
BOOL TRUE or
FALSE
page 3-48
_EIP1_TDLinkErr CIP Communica-
tions1 T
ag Data Link
Communications Er-
ror
Indicates that a timeout occurred in a tag
data link connection for CIP communica-
tions 1.
TRUE: A timeout occurred.
FALSE: Other than the above.
Note You can use this system-de-
fined variable only for NX-ser-
ies CPU Units.
BOOL TRUE or
FALSE
page 3-48
3 System-defined Variables Related to the Built-in EtherNet/IP Port
3-15
NJ/NX-series CPU Unit Built-in EtherNet/IP Port User’s Manual (W506)
3-2 System-defined Variables
3
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