Rockwell Automation 1771-SPI,D17716.5.122 SPI PROTOCOL INTERFACE - Manual (Page 52)

Interpreting Diagnostic Information
In LEDs and Error Codes
Chapter 5
5-2
Use this Flow Chart to Troubleshoot Your SPI Network
Locate the SPI module in the I/O chassis and observe its LED indicators.
Use the following flow charts to troubleshoot the cause of the fault:
Are process actuals
being read from the device,
and are setpoints accepted
by the device?
Yes
SPI communication is OK.
No
Observe the SPI module's LEDs.
MODULE
CHANNEL
MODULE
FAULT
ACTIVE
ACTIVE
=
=
= OFF
ON or Flashing
ON
Do you observe:
Yes
MODULE
CHANNEL
MODULE
FAULT
ACTIVE
ACTIVE
=
=
= OFF
Flashing
Do you observe:
No
Yes
Go to A
OFF
MODULE
CHANNEL
MODULE
FAULT
ACTIVE
ACTIVE
=
=
= ON
Flashing
Do you observe:
No
Yes
any
MODULE
CHANNEL
MODULE
FAULT
ACTIVE
ACTIVE
=
=
= ON
ON or Flashing
Do you observe:
No
Yes
Go to B
Flashing
No