Rockwell Automation 2755-SNx Adaptascan Bar Code Readers - Manual (Page 219)

11–19 Communicating with a PLC-5 Processor on a DeviceNet Network
Publication 2755-6.8
The bicolor (green/red) module status indicator displays device
status. The LED indicates whether the device has power and is
functioning properly.
If the Module LED is this indicates Take this action
Off there is no power applied to
the module. Apply power.
Solid green the module is operating in
normal condition. None
Flashing green the module is not configured. Configure the module.
Flashing red there is invalid configuration. Check configuration setup
and verify dip switch settings.
Solid red the module has an
unrecoverable fault. Replace the module.
Channels 1 and 2 each have a bicolor (green/red) network status
indicator. The following table provides troubleshooting information
about the Channel 1 and 2 communication links.
If the NET indicator is this indicates Take this action
Off the channel is disabled for
DeviceNet communication. Power-up the module, provide
network power to channel,
and be sure channel is
enabled in both the module
configuration table and
module command word.
Flashing green the channel is enabled but no
communication is occurring. Configure scan list table for
channel to add devices.
Solid green all slave devices in the scan
list table are communicating
normally with the module. None.
Solid red the module may be defective. Reset module. If failures
continue, replace module.
Flashing red at least one of the slave
devices in the module’s scan
list table has failed to
communicate with the
module.
The network has faulted. Examine the failed device and
the scan list table for
accuracy.
Module Status
Indicator
Channel 1
Top part of module
Network Status
Indicator
Troubleshooting Your
Module