Rockwell Automation 1785-Lx0E,D178510.5 QUICK START ETHERNET PLC-9 - Manual (Page 19)

Publication 1785-10.5 - November 1998
Chapter
4
Troubleshoot the Processor System
Use the PLC-5 Processor
Status Indicators Troubleshoot General Problems
Use the PLC-5 Processor
Status Indicators
(page 4-1)
1
BATT
PROC
FORCE
COMM
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
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