Allen-Bradley 1788-CN2FFR, User Manual, Page: 49 / 104

Rockwell Automation Publication 1788-UM057B-EN-P - September 2014 47
Set Up in the Studio 5000 Logix Designer Application Chapter 2
Reconnect Two Separate Running LAS Devices
If two masters are configured on a network (one on each end) and the cable
between them is broken, some devices will be connected to one master, and the
remaining devices will be connected to the other master.
See master modes 9, 12, and 15 in Appendix D .
Follow these steps to connect the two H1 segments.
1. Hold the Page button for 5 seconds to put one of the masters into
Connect Safe mode (see Connect Safe Mode on page 46 ).
You have 10 seconds to reconnect the segments.
2. Reconnect the cable between the masters.
Swap Out Linking Devices
Follow these steps to swap out a linking device.
1. Plug in all communication and power connectors, but not the H1
segment.
2. Once the linking device is connected to Logix, change the node address to
anything other than the node address of the running master.
3. Hold the Page button for 5 seconds to put the linking device into Connect
Safe mode (see Connect Safe Mode on page 46 ).
You have 10 seconds to reconnect the segments.
4. Click the Master Sync button in the overview window to synchronize the
new master with the current running master (see
Redundant Master Setup
on page 43 )
IMPORTANT
Failure to enter Connect Safe mode can result in a loss of
communication, or devices going to the visitor range.
IMPORTANT
Failure to enter Connect Safe mode can result in a loss of
communication, or devices going to the visitor range.