3 System-defined Variables Related to the Built-in EtherNet/IP Port
3-30
NJ/NX-series CPU Unit Built-in EtherNet/IP Port User’s Manual (W506)
Communications Status with Target Node
The communications status with the target node of an NJ/NX-series Controller is shown by the
combination of the values of four system-defined variables.
• _EIP_RegTargetSta (Registered Target Node Information)
• _EIP_EstbTargetSta (Normal Target Node Information)
• _EIP_TargetPLCErr (Target PLC Error Information)
• _EIP_TargetNodeErr (Target Node Error Information)
For the NX-series Controller, the communications status of CIP communications 1 and CIP com-
munications 2 is shown by the combination of the values of four system-defined variables in the
same way as shown in the above table.
• CIP Communications 1
• _EIP1_RegTargetSta (CIP Communications1 Registered Target Node Information)
• _EIP1_EstbTargetSta (CIP Communications1 Normal Target Node Information)
• _EIP1_TargetPLCErr (CIP Communications1 Target PLC Error Information)
• _EIP_TargetNodeErr (Target Node Error Information)
• CIP Communications 2
• _EIP2_RegTargetSta (CIP Communications2 Registered Target Node Information)
• _EIP2_EstbTargetSta (CIP Communications2 Normal Target Node Information)
• _EIP2_TargetPLCErr (CIP Communications2 Target PLC Error Information)
• _EIP_TargetNodeErr (Target Node Error Information)
Value of
_EIP_RegTarget-
Sta
Value of
_EIP_EstbTar-
getSta
Value of
_EIP_Target-
PLCErr
Value of
_EIP_Target-
NodeErr
Communications status with target
node
TRUE TRUE FALSE FALSE A connection with the target node was
established normally and there is no error
in the target PLC.
TRUE TRUE A connection with the target node was
established but there is an error in the
target PLC.
FALSE Disabled TRUE A connection with the target node was
not established normally.
FALSE Disabled Disabled Disabled The information is not valid because the
target node is not registered.
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