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If The OK
With This
Indicator Is
Module Status
Display
Steady green or
SO_1
off
SO_2
SO_3
SN_1
SN_2
SN_3
?Cpt
!Cpt
(1)
If switches are set to 00 the display scrolls "FAULT: ADDRESS SWITCHES = 00, ILLEGAL" If switches are set to 99 in a redundant chassis, the display scrolls: "FAULT:
ADDRESS SWITCHES = 99, ILLEGAL IN REDUNDANT SYSTEM"
It Means
Old primary switchover phase 1 in progress.
Old primary switchover phase 2 in progress.
Old primary switchover phase 3 in progress.
New primary switchover phase 1 in progress.
New primary switchover phase 2 in progress.
New primary switchover phase 3 in progress.
CNB has not determined if it is compatible.
CNB has determined that it is not compatible.
Network Channel Status Indicator Interpretation
When you connect the module to a ControlNet network
IMPORTANT
using only the NAP, the LEDs are meaningless.
• Steady - indicator is on continuously in the defined state.
• Alternating - the two indicators alternate between the two defined
states at the same time (applies to both indicators viewed together). The
two indicators are always in opposite states, out of phase.
• Flashing - the indicator alternates between the two defined states
(applies to each indicator viewed independent of the other). If both
indicators flash, they must flash together, in phase.
Troubleshoot Your ControlNet Communication Modules
Take This Action
If the display shows any message for more than
three seconds, then the CNB module failed
during transition from one redundancy phase to
another. Replace one or both redundancy
modules.
Replace the CNB module with correct type and
revision.
Publication CNET-UM001C-EN-P - November 2005
8-9
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