Omron CJ1W-EIP21 Operation Manuals page 201

 Programming Example to Detect Errors
The following programming can be used to check for tag data link errors for each target node. This
programming is used to detect errors only after the data links for all nodes have started normally.
Online
(*_ETNOnlineSta)
 Data Processing Programming Example
• The following type of programming can be used to process data only when the data links are oper-
ating normally.
Additional parts
CJ-series EtherNet/IP Units Operation Manual for NJ-series CPU Unit (W495)
Normal Target Node Table (#1)
*_EstbTargetSta[1]
Normal Target
Node Table (#1) Node 1
*_EstbTargetSta[1] error output
Normal Target
Node Table (#2)
*_EstbTargetSta[2]
Normal Target
Node Table (#2) Node 2
*_EstbTargetSta[2] error output
The parts of the ladder
Normal operation flag
program that use the data
link area for the relevant
node are processed only
when the corresponding
Normal operation flag
normal operation flag is ON.
7 Tag Data Link Functions
Node 1 error output
Node 2 error output
7
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