Rockwell Automation 1756-DNB ControlLogix DeviceNet Scanner Module Installation Instructions - Manual (Page 37)

ControlLogix DeviceNet Scanner Module 37
Publication 1756-IN566D-EN-P - June 2008
Indicator State Description
Module/
Network
(MOD/NET)
Flashing
red (1)
Minor fault and/or connection time-out - recoverable fault
and/or one or more I/O connections are in the timed-out state.
Red Critical fault or critical link failure - device has an
unrecoverable fault and may need to be replaced.
Failed communication device. The device has detected an
error (duplicate MAC ID or bus-off) that has rendered it
incapable of communicating on the network.
I/O Off Scanner is not online. Check network power.
Green Scanner is in RUN mode, outputs are under control, and inputs
are being consumed.
Flashing
green (1)
(1) The flash rate of the status indicator is approximately 1 flash per second. The status indicator should
be on for approximately 0.5 seconds and off for approximately 0.5 seconds.
Scanner is in IDLE mode, outputs are not under control, and
inputs are being consumed.
OK Off No power applied to device. Apply chassis power. Verify
module is completely inserted into chassis and backplane.
Green Device is operating normally. The 1756-DNB scanner module
has at least one connection to it from a controller.
Flashing
green (2)
(2) The flash rate of the status indicator is approximately 1 flash per second. The status indicator should
be on for approximately 0.5 seconds and off for approximately 0.5 seconds.
The device is operating correctly; however, no controller is
controlling it. Verify that the 1756-DNB scanner module is
properly configured in the controller’s I/O configuration.
Red Device has an unrecoverable fault; repair or replace it, or
Device is in self test during power-up.