Precautions for Correct Use
Communications Status with Target Node
The communications status of the communications port 1 of the NX-series EtherNet/IP Unit and
the target node is shown by the combination of the values of the following four device variables.
•
EIP_Comm1Status.RegTargetSta[255] (CIP Communications1 Registered Target Node Infor-
mation)
• EIP_Comm1Status.EstbTargetSta[255] (CIP Communications1 Normal Target Node Informa-
tion)
• EIP_Comm1Status.TargetPLCErr[255] (CIP Communications1 Target PLC Error Information)
• EIP_Comm1Status.TargetNodeErr[255] (CIP Communications1 Target Node Error Informa-
tion)
Value of
EIP_Comm1Sta-
tus.RegTarget-
Sta[255]
V
alue of
EIP_Comm1Sta-
tus.EstbTarget-
Sta[255]
Value of
EIP_Comm1
Status.Tar-
getPL-
CErr[255]
Value of
EIP_Comm1
Status.Tar-
getNo-
deErr[255]
Communications status
with target node
TRUE TRUE FALSE FALSE A connection with the target
node was established normal-
ly 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 --- TRUE A connection with the target
node was not established nor-
mally
.
F
ALSE --- --- --- The information is not valid
because the target node is not
registered.
The same applies for the case of communications port 2.
6 Device Variables Related to the NX-series EtherNet/IP Unit
6-15
NX-series EtherNet/IP Unit User's Manual (W627)
6-2 Device Variables
6