Rockwell Automation 1794-ASB/E Remote I/O Adapter Module User Manual - Manual (Page 55)

4–3 Troubleshooting
Publication 1794ĆUM009D-EN-P - April 2004
Module Faults
Fault Reset Actions Fault Condition
Adapter
Active
Adapter
Fault
Local
Fault
Blinking OFF Blinking
Module not responding.
Possibly module removed
Module not responding: Old inputs
maintained. Outputs set to to zero.
All other modules: Outputs
Replace same module; or cycle
Processor in PROG/TEST mode
Rack Fault Select NOTenabled
Possibly module removed
under power. Only module
removed is affected.
All other modules: Outputs
disabled.
Sending current input status back
to scanner.
p y
power to establish new
identification for module.
Blinking Off Blinking
Module not responding.
Possibly module removed
Module not responding. All outputs
set to 0.
All other modules; digital outputs in
S
Replace same module; or cycle
Processor in RUN/PROG/TEST
Rack Fault Select enabled
Possibly module removed
under power. Only module
removed is affected.
the rack follow HLS setting.
Refer to page 2-9 for analog output
action.
No replies sent to scanner.
p y
power to establish new
identification for module.
Configuration Faults
Local
Fault
Adapter
Fault
Adapter
Active
Fault Condition Actions Fault Reset
Off Blinking in unison Incorrect starting I/O group number.
On On On Incorrect baud rate setting.
Not applicable.
Turn power off. Set SW1 and
SW2 correctly Turn power on
Blinking in sequence
Another adapter on the link has the
same address.
Not applicable.
SW2 correctly. Turn power on.
Blinking On Off
Illegal module placement - compact
addressing mode selected.
Not applicable.
Correct module placement
and cycle power.
Additional Faults and Module Displays
Local
Fault
Adapter
Fault
Adapter
Active
Fault Condition Actions Fault Reset
Random Access Memory fault.
Reset outputs. Stop
communicating on remote I/O
link.
Cycle power. (This may not
correct fault.)
Off On Off
Read Only Memory fault (on
powerup only).
Outputs remain reset.
Communication never starts.
correct fault.)
If this does not correct the fault,
replace the module with a known
good module and return the bad
Internal watchdog timer timed
out.
Try to reset outputs. Stops
communicating on the remote I/O
link.
good module, and return the bad
module to the factory for repair.
In this chapter you learned how to use the indicators on the front of
the module to troubleshoot your module.
Chapter Summary