Rockwell Automation 1747-BSN Backup Scanner Module - Manual (Page 8)

8 Backup Scanner Module
Publication 1747-5.38
Status LEDs
The table below describes the six LEDs located on the module’s front panel. To
ensure that they are operating correctly, all LEDs are illuminated during power-up.
High-Speed Serial Link (HSSL)
The high-speed serial link supports communication between the primary and
secondary backup scanner modules. The baud rate is 2M baud, and the link
supports a distance of up to 4.5 m (15 feet).
The HSSL also transfers a limited number of SLC 500 data table files from the
primary to the secondary processor. The data table transfer is controlled by an
application program in the processor.
LED Definition Status and Color Indication
PRI Primary Steady Green The module is in the primary mode.
SEC Secondary Steady Amber The module is in the secondary mode.
RIO RIO Communication
Steady Green The RIO link is working properly.
Flashing Green
A remote device is not configured or
connected correctly, or is faulted.
Flashing Red
The RIO link has a fault. The scanner is
connected incorrectly, or all devices are
configured improperly, have no power,
or are faulted.
Steady Red There is a configuration error.
Off
The communication channel is not
configured as RIO.
ERR
Backup Module
Error Flashing Red The module is not ready for switchover.
Off The module is ready for switchover.
HSSL
High Speed Serial
Link Communication
Flashing Green The link is operating with no errors.
Off
A communications error has been
detected on the HSSL.
FLT Fault
Steady Red A hardware fault has occurred.
Flashing Red The module is not configured properly.