Rockwell Automation 1788-EN2PAR EtherNet/IP and ControlNet to PROFIBUS PA Linking Device User Manual - Manual (Page 41)

Rockwell Automation Publication 1788-UM058B-EN-P - September 2014 41
Set Up in the Studio 5000 Logix Designer Application Chapter 2
MultiMaster Mode
When running in redundant master mode (MultiMaster mode), the PA master
can be in one of three different states:
• Primary Active
• Secondary Active
• Master Config Mismatch
• Master Node Mismatch
Primary Active
The Primary Active linking device is the primary master that is currently
providing communication.
Secondary Active
The Secondary Active linking device is the secondary master (hot backup). The
secondary master does not provide communication until the primary master has
not communicated for a certain amount of time.