3-31
3 System-defined Variables Related to the Built-in EtherNet/IP Port
NJ/NX-series CPU Unit Built-in EtherNet/IP Port User’s Manual (W506)
3-2 System-defined Variables
3
Functional Classification: EtherNet/IP Communications Switches
You can start and stop tag data links.
Variable name Meaning Function Data type
Range of
values
Reference
_EIP_TDLinkStart-
Cmd
Tag Data Link Com-
munications Start
Switch
NX-series CPU Units: Change this vari-
able to TRUE to start tag data links for CIP
communications 1.
It automatically changes back to FALSE
after tag data link operation starts.
NJ-series CPU Units: Change this vari-
able to TRUE to start tag data links.
It automatically changes back to FALSE
after tag data link operation starts.
Note Do not force this switch to change
to FALSE from the user program or
from the Sysmac Studio. It changes
to FALSE automatically.
BOOL TRUE or
FALSE
page 3-58
_EIP1_TDLinkStart-
Cmd
CIP Communica-
tions1 Tag Data Link
Communications Start
Switch
Change this variable to TRUE to start tag
data links for CIP communications 1.
It automatically changes back to FALSE
after tag data link operation starts.
Note Do not force this switch to change
to FALSE from the user program or
from the Sysmac Studio. It changes
to FALSE automatically.
Note You can use this system-defined vari-
able only for NX-series CPU Units.
BOOL TRUE or
FALSE
page 3-58
_EIP2_TDLinkStart-
Cmd
CIP Communica-
tions2 Tag Data Link
Communications Start
Switch
Change this variable to TRUE to start tag
data links for CIP communications 2.
It automatically changes back to FALSE
after tag data link operation starts.
Note Do not force this switch to change
to FALSE from the user program or
from the Sysmac Studio. It changes
to FALSE automatically.
Note You can use this system-defined vari-
able only for the NX701 CPU Units.
BOOL TRUE or
FALSE
page 3-58
_EIP_TDLinkStop-
Cmd
Tag Data Link Com-
munications Stop
Switch
NX-series CPU Units: Change this vari-
able to TRUE to stop tag data links for CIP
communications 1.
It automatically changes back to FALSE
after tag data link operation stops.
NJ-series CPU Units: Change this vari-
able to TRUE to stop tag data links.
It automatically changes back to FALSE
after tag data link operation stops.
Note Do not force this switch to change
to FALSE from the user program or
from the Sysmac Studio. It changes
to FALSE automatically.
BOOL TRUE or
FALSE
page 3-59
_EIP1_TDLinkStop-
Cmd
CIP Communica-
tions1 Tag Data Link
Communications Stop
Switch
Change this variable to TRUE to stop tag
data links for CIP communications 1.
It automatically changes back to FALSE
after tag data link operation stops.
Note Do not force this switch to change
to FALSE from the user program or
from the Sysmac Studio. It changes
to FALSE automatically.
Note You can use this system-defined vari-
able only for NX-series CPU Units.
BOOL TRUE or
FALSE
page 3-59