Allen-Bradley SLC 500 DeviceNet, User Manual, Page: 97 / 139

1 Publication 1747-6.5.5 - August 2000
Chapter
7
Troubleshooting
The 1747-SDN interface module is provided with LED diagnostic
indicators on its front panel. The diagnostics provided by these
indicators are described in this chapter.
Module Status Indicator The bicolor (green/red) Module Status indicator (MODULE) indicates
whether the 1747-SDN module has power and is functioning properly.
For information about See page
Module Status Indicator 7-1
Network Status Indicator 7-2
Numeric Display Code Summary 7-3
Table 7.A - Module Status Indicator
If the MODULE
indicator is: Then: Take this action:
Off There is no power applied to the
module. Verify power connections and
apply power.
Green The module is operating normally. No action required.
Flashing Green The module is not configured. Configure the module.
Flashing Red There is an invalid configuration. Check configuration setup.
Red The module has an unrecoverable
fault. Replace the module.