QUICK START CONTROLNET PLC-5

Chapter 4
Publication
1785-10.7 – October 1997
Troubleshoot the Processor
System
If you want to read about: See page:
Using the general status indicators
4-1
Using the ControlNet status indicators 4-3
Monitoring the ControlNet configuration and status screens 4-6
The general status indicators inform you of the general operational
state of the processor.
Indicator Color Description Probable Cause Recommended Action
BATT
Red Battery low Battery low Replace battery within 10 days
Off Battery is good Normal operation No action required
PROC
Green
(steady)
Processor is in run
mode and fully
operational
Normal operation No action required
Green
(blinking)
Processor memory is
being transferred to
EEPROM
Red
(blinking)
Major fault Run-time error
Check major fault bit in status file
(S:11) for error definition
Clear fault bit, correct problem,
and return to run mode
Alternating
Red and
Green
Processor in
FLASH-memory
programming mode
Normal operation if
processor’s FLASH
memory is being
reprogrammed
No action required – allow flash
update to complete
Processor FLASH
memory checksum
error
Contact your local A-B
representative for a field firmware
update
Red
(steady)
Major fault
Processor
memory has
checksum error
Memory
module error
Internal diagnostics
have failed
Clear memory and
reload program
Check backplane switch settings
and/or insert correct memory
module
Power down, reseat processor
and power up; then, clear memory
and reload your program. Replace
EEPROM with new program;
then, if necessary, replace
the processor
Off Processor is in program
load or test mode or is
not receiving power
Check power supply
and connections
BATT
PROC
FORCE
COMM
Using This Chapter
Using the General
Status Indicators