Allen-Bradley 1756-IF8I User Manual page 101

That single controller behavior should result in the following:
1. Output is not owned until the Claim connection is made.
2. Any disruption in the Claim connection causes the I/O module to switch
to the Ready path.
3. When the Claim connection recovers from the disruption, the I/O
module switches back to Claim.
Multiple Controller Behavior
For multiple controllers, the applications synchronize the behavior between the
controllers. Note Ethernet modules A and B, and RedundantOutputA and
RedundantOutputB.
Figure 32 - Multiple Controller
Logix5585E DC OUTPUT ANALOG INPUT DC INTPUT DC OUTPUT ANALOG INPUT
SAFETY ON
ST 0 1 2 3 4 5 6 7 ST 0 1 2 3 4 5 6 7 ST 0 1 2 3 4 5 6 7
NET
FLT 0 1 2 3 4 5 6 7 ST 0 1 2 3 4 5 6 7 FLT 0 1 2 3 4 5 6 7 FLT 0 1 2 3 4 5 6 7 ST 0 1 2 3 4 5 6 7
O
LINK
ST 8 9 10 11 12 13 14 15 ST 8 9 10 11 12 13 14 15 K ST 8 9 10 11 12 13 14 15 ST 8 9 10 11 12 13 14 15 ST 8 9 10 11 12 13 14 15
FLT 8 9 10 11 12 13 14 15 FLT 8 9 10 11 12 13 14 15 FLT 8 9 10 11 12 13 14 15
LNK1 LNK2 NET OK
REM
RUN PROG
1
2
LNK1 LNK2 NET OK LNK1
1 1
2 2
IMPORTANT If you use ControlLogix Redundancy as the multiple controller system, then you
Rockwell Automation Publication 1756-UM540E-EN-P - December 2017
O
K
DC OUTPUT ANALOG INPUT DC INTPUT DC OUTPUT ANALOG INPUT
ST 0 1 2 3 4 5 6 7 ST 0 1 2 3 4 5 6 7 ST 0 1 2 3 4 5 6 7
FLT 0 1 2 3 4 5 6 7 ST 0 1 2 3 4 5 6 7 FLT 0 1 2 3 4 5 6 7 FLT 0 1 2 3 4 5 6 7 ST 0 1 2 3 4 5 6 7
O O
ST 8 9 10 11 12 13 14 15 K ST 8 9 10 11 12 13 14 15 K
ST 8 9 10 11 12 13 14 15 ST 8 9 10 11 12 13 14 15 ST 8 9 10 11 12 13 14 15
FLT 8 9 10 11 12 13 14 15 FLT 8 9 10 11 12 13 14 15 FLT 8 9 10 11 12 13 14 15
LNK2 NET OK
do not have to manage the dual controllers. If you use any other method, then
you must manage the primary and secondary controllers yourself. This
application does not manage the controllers, just the I/O.
1756-OF8I Isolated Analog Output Module
Logix5585E DC OUTPUT ANALOG INPUT DC INTPUT DC OUTPUT ANALOG INPUT
SAFETY ON
ST 0 1 2 3 4 5 6 7 ST 0 1 2 3 4 5 6 7 ST 0 1 2 3 4 5 6 7
NET
FLT 0 1 2 3 4 5 6 7 ST 0 1 2 3 4 5 6 7 FLT 0 1 2 3 4 5 6 7 FLT 0 1 2 3 4 5 6 7 ST 0 1 2 3 4 5 6 7
O
LINK
ST 8 9 10 11 12 13 14 15 ST 8 9 10 11 12 13 14 15 K ST 8 9 10 11 12 13 14 15 ST 8 9 10 11 12 13 14 15 ST 8 9 10 11 12 13 14 15
FLT 8 9 10 11 12 13 14 15 FLT 8 9 10 11 12 13 14 15 FLT 8 9 10 11 12 13 14 15
LNK1 LNK2 NET OK
REM
RUN PROG
1
2
32762-M
Chapter 5
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101