7-3
Ladder Programming for Tag Data
Links
7-3-1
Ladder Programming for Tag Data Links
The following conditions 1 to 3 should be fulfilled if you use tag data link data for a ladder program.
The additional conditions 4 and 5 should be also fulfilled if you input the Controller information of the
target node.
Conditions for enabling tag data links for the built-in EtherNet/IP port on a
NJ/NX-series CPU Unit
The following conditions 1 and 2 should be both fulfilled.
No. Condition
1 The following error status bits in the _EIP_ErrSta (Built-in EtherNet/IP Error) variable
are F
ALSE.
• Major fault: Bit 7
• Partial fault: Bit 6
• Minor fault: Bit 5
2
The _EIP_EtnOnlineSta (Online) variable
*1
is TRUE.
Condition for tag data links with connection established to the target de-
vice
The following condition 3 should be fulfilled.
No. Condition
3
In the _EIP_EstbTargetSta (Normal Target Node Information) variable
*2
, the bit corre-
sponding to the target node address is TRUE.
Condition of the Controller operating mode (operating or stopped) (only
for OMRON Controllers)
The following condition 4 should be fulfilled.
No. Condition
4
In the _EIP_T
argetPLCModeSta (Target PLC Operating Mode) variable
*3
, the bit cor-
responding to the target node address is TRUE.
Condition of the Controller error status (fatal or non-fatal error) of the tar-
get node (only for OMRON Controllers)
The following condition 5 should be fulfilled.
No. Condition
5
In the _EIP_T
argetPLCErr (Target PLC Error Information) variable
*4
, the bit corre-
sponding to the target node address is FALSE.
When you want to use the Target Node Controller Error Flag, the Controller status
must be included in the tag sets for both the originator and target. Include the Control-
ler status by using the Network Configurator to select the Include Option in the Edit
Tag Set Dialog Box.
7 Tag Data Link Functions
7-80
NJ/NX-series CPU Unit Built-in EtherNet/IP Port User’s Manual (W506)
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