Rockwell Automation 8520 9/Series CNC Integration Maintenance Manual Documentation Set - Manual (Page 328)

Section 5B
9/440HR CNC/Drive System
5B-38
9/440HR CNC/Drive has 4 LEDs on the system module and one LED on
each axis module in the system. The LEDs operate as follows.
System Module LEDs
The system module has 4 LEDs. They are:
LED Indicates
XILINX Under normal operation this LED is on. If it
turns off while the system module is under
power it indicates a XILINX hardware fault.
Contact your local Allen--Bradley Service.
WATCHDOG Under normal operation this LED is on. If it
turns off while the system module is under
power it indicates the watchdog has timed out
and a processor failure has occurred. Contact
your local Allen-Bradley Service.
R--I/O Only available on systems with remote I/O. This
LED illuminates when the remote I/O link is
communicating. See page 5B-27.
STATUS This is identical to the Watchdog LED but is
visible through the system modules front cover.
9/440HR System Module
Open Cover
Press Cover
Release to Open
Wiring Board
WATCHDOG
XILINX
Status LED
R-I/O LED
(visible from under system
module in front of serial
port B)
Check your 9/Series CRT for any drive faults that may have occurred and
are displayed as an error.
5B.7
9/440HR LEDs