Omron SYSMAC CJ1W-EIP21, Operation Manuals

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7-69
7 Tag Data Link Functions
CJ-series EtherNet/IP Units Operation Manual for NJ-series CPU Unit (W495)
7-3 Lad
d
er Pr
og
ramm
ing
f
o
r T
a
g
Data L
inks
7
7-3
-1 Ladd
er Prog
ramming f
or T
ag D
ata Links
7-3 Ladder Programming for Tag Data
Links
If data in the ladder program is linked by tag data links, add conditions 1 to 3 in the ladder program for
that data. If you want to use target PLC information in the input conditions, add conditions 4 and 5.

Conditions to enable the NJ-series EtherNet/IP Unit’s tag data links:
(1) The following error bits in the Unit Error Occurred (* _UnitErr ) are FALSE.
(2) Also, the Online variable (* _ETNOnlineSta ) is TRUE.

Conditions showing that connections are established with the target device,
and tag data links are operating:
(3) The element corresponding to the target node address in the Normal Target Node
Table variable (* _EstbTargetSta ) [0] to [63] is TRUE.

Condition for the Target Node PLC Operating Flags (operating or stopped)
(*
_TargetPLCMdSta ) (valid for OMRON Controllers only):
(4) The Target PLC Operating Mode of the target node is TRUE.

Condition for the Target PLC Error Information of the target node (valid for
OMRON Controllers only):
(5) The corresponding element in the Target Node PLC Error Flags (* _TargetPLCErrSta )
is FALSE.
When you want to use the Target Node PLC Error Flags, the Controller status must be
included in the tag sets for both the originator and target. Include the Controller status by
using the Network Configurator to select the Include Options in the Edit Tag Set Dialog
Boxes.
7-3-1 Ladder Programming for Tag Data Links