Rockwell Automation 8520 9/Series CNC Integration Maintenance Manual Documentation Set - Manual (Page 459)

Section 8
Communication Interface
8-26
Use this table if you see a different LED pattern than shown above.
Indicator Color/State Description Probable Cause Recommended Action
A
(B is not used)
green/steady active link normal operation none required
red/steady hardware fault at
processor
hardware error cycle power. Replace the processor.
Refer to your processor
documentation.
red/blinking communication break AMP is not set correctly reset AMP parameters to
communicate with scanner program
off remote I/O port is offline port is not being used bring remote I/O port on line
ACT green/steady active link to 9/Series
CPU
normal operation none required
off remote I/O module is not
communicating with
9/Series control
remote I/O module is offline AMP or PAL is not properly
configured or your remote I/O
network is not configured to
communicate with the module.
FLT1 on major hardware fault device has failed if LED remains on after cycling
power, contact your Allen-Bradley
FLT1
power, contact your Allen-Bradley
sales representative