Rockwell Automation 1747-SDN 1747-SDN DeviceNet Scanner Installation Instructions - Manual (Page 13)

1747-SDN DeviceNet Scanner Module 13
Publication 1747-IN058F-EN-P - December 2010
The DeviceNet channel has a bicolor (green/red) network status indicator (NET). The
following table provides troubleshooting information about the DeviceNet channel
communication link.
DeviceNet Channel Communication
Indicator
Color Description Device Operation Corrective Action
Off The channel is disabled for
DeviceNet communication. The device has no power or
the channel is disabled for
communication due to bus off
condition, loss of network
power, or has been
intentionally disabled. Power-up the module, provide
network power to the channel,
and be sure the channel is
enabled in both the module
configuration table and the
module command word.
Green All slave devices in the scan
list table are communicating
normally with the module. Normal operation. None.
Flashing
Green The channel is enabled but
no communication is
occurring. The two-digit numeric display
for the channel indicates an
error code that provides more
information about the
condition of the channel. Configure the scan list table
for the channel to add devices.
Flashing
Red At least one of the slave
devices in the module’s scan
list table has failed to
communicate with the
module. The two-digit numeric display
for the channel displays an
error code that provides more
information about the
condition of the channel. Examine the failed device and
the scan list table for accuracy.
Red The module may be
defective. The communications channel
has failed. The two-digit
numeric display for the
channel displays an error code
that provides more information
about the condition of the
channel. Reset module. If failures
persist, replace module.