Rockwell Automation 1784-PM16SE SoftLogix Motion Card Setup and Configuration Manual - Manual (Page 423)

Publication 1784-UM003A-EN-P – June 2003
Troubleshooting 415
SERCOS Ring Status
The Communication Phase LED
The Communication Phase (CP) LED provides information as to what phase
the SERCOS link is in.
If SERCOS
Ring
Status LED
displays: Then the ring status is: Take this action:
Solid green
light The ring, drive, and axes are
configured and are actively
communicating through to the
nodes on the ring. None.
Flashing red
light The card has detected a setup
or configuration fault with the
ring. Check your system setup and
configuration as follows:
• Ensure drive and axes
addresses are correct.
• Remove excess axes from ring.
• Make sure application program
has selected the proper Ring
Cycle Period and Baud Rate.
Solid red
light The card has detected a
hardware or installation fault
with the ring. Check your system hardware and
installation as follows:
• Make sure all cables are
properly installed.
• Make sure cable is of the
correct type and length.
• Make sure application program
has configured the card’s ring
transmit level to High when
using specified cables.
• Make sure the drive’s transmit
levels are set appropriately.
• Inspect cables for degradation.
• Inspect drives for any faults
and correct them.
Off The card has detected no ring
data on its receiver or has not
successfully completed phase
2. Check your system and installation
as follows:
• Make sure all cables are
properly installed
• Inspect cable for degradation
and breakage.
• Inspect drives for faults.
Flashing
green light The ring, drive, or axes are not
configured but, at least one has
been identified. Not a problem if the system has not
been configured. If you are having
trouble configuring the ring, drive,
and axes:
Make sure that the application
program is setup properly for the
equipment in use.