Rockwell Automation 8520 9/Series Hardware TAB 5 - Manual (Page 140)

Section 5B
9/440HR CNC/Drive System
5B-66
All 9/440HR CNC/Drives have four 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-36.
STATUS This is identical to the Watchdog LED but is
visible through the system modules front cover.
9/440 High–resolution
System Module
(All Series)
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