Delta RMC151 - Manual (Page 475)

6 Communication
To find these registers when editing the Program Triggers or a User Program, use the
Address Selection tree and browse to:
Controller > Communication Settings > Ethernet
Handling Broken I/O Connections in the PLC
The method of detecting and handling a broken EtherNet/IP I/O connection varies from
PLC to PLC. Review the documentation included with your PLC or EtherNet/IP
communication card for details. Some PLC detection procedures are shown below.
However, these are not comprehensive procedures and do not cover all PLCs.
Allen-Bradley ControlLogix and CompactLogix PLCs
The ControlLogix and CompactLogix controllers have two methods of handling a broken
connection with an EtherNet/IP device such as the RMC:
• In RSLogix 5000, in the Module Properties dialog box for the RMC, on the Connection
tab, the Major Fault On Controller If Connection Fails In Run Mode check box
can be checked to fault the ControlLogix when the EtherNet/IP connection to the RMC
is broken.
• The Get System Value (GSV) block can be used to read the status of the connection in
ladder logic. The following ladder logic demonstrates this:
The core of this ladder segment is reading the EntryStatus and FaultCode attributes from
the RMC MODULE object using the GSV blocks. The MODULE objects are internal to the
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