Rockwell Automation 1788-CNFR ControlNet Daughtercard Installation Instructions - Manual (Page 13)

ControlNet Daughtercard 13
Publication 1788-IN005A-EN-P - March 2001
Troubleshoot with the Status Indicators
Status indicators provide information about the card and the network when you are
connected via the fiber connectors. The following definitions and tables outline the
possible states, explains what each state means to you, and indicates what action
you should take, if any, to correct that state.
Definition of terms:
•
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 when 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 are
flashing, they flash together, in phase.
IMPORTANT
Keep in mind that the Module Status indictor reflects the module
state, e.g., self-test, firmware update, normal operation but no
connection established, etc. The network status LEDs, A and B,
reflect network status. Remember that the host is able to engage
in local messaging with the card although it is detached from the
network. Therefore, the Module Status LED is flashing green if
the host has successfully started the card. Note, however, that
until the host removes reset, all LEDs on the daughtercard will
remain off.