Rockwell Automation 1756-CN2_CN2R, Series B ControlLogix ControlNet Interface Module - Manual (Page 29)

ControlLogix ControlNet Interface Module 29
Publication 1756-IN607A-EN-P - February 2008
ControlNet Channel Status Indicators
ControlNet Indicator States (A AND B)
AND
A B
Cause Action
Off There is no power. No action is required, or apply
power.
Steady red Unit has faulted. Cycle power or reset unit.
If fault persists, contact a
Rockwell Automation
representative or distributor.
Alternating
red/green A self-test is being conducted. No action is required.
Alternating
red/off Node has been configured
incorrectly. Check network address and other
ControlNet configuration
parameters.
The ControlNet channel status indicators appear in one of these
states:
•
Steady - status indicator is on continuously in the defined
state.
•
Alternating - while viewed together, the two indicators
simultaneously alternate between the two defined states. The
two indicators are always in opposite states, out of phase.
•
Flashing - when each status indicator is viewed apart from the
other, each status indicator alternates between the two defined
states. If both indicators are flashing, they must flash together,
in phase.