Yaskawa MP940 Reference Manual - Manual (Page 332)

Troubleshooting Outline MotionSuite™ MP940 Machine Controller Reference Manual
9-4
Content of LED Display
The display content and countermeasure methods for the LEDs displaying
the MP940 operation status and error content are shown below.
Note: In the display light LED ×: OFF; :ON; §:Flash; —:Undefined
Type
Display Light Name
Display Content Countermeasure
RDY RUN ALM BAT
Nor-
mal × × × Hardware Reset State The CPU normally starts within 1 second. If
this state continues, there is a software error/
hardware fault. Execute system error coun-
termeasures.
× × × × Initial Execution
× × × User Program Stopped
(online stop mode) When a STOP operation is executed by
MotionWorks TM . This state results when the
RUN switch is turned OFF.
× × User Program Executing
Normally This state results during normal execution.
Error × × Major Fault Generation —
× × Program Memory
Initialization Complete
Scan Time Setting
Error Execute the program memory clear operation
in the MotionWorks TM system definition
screen. A hardware failure is suspected if the
system does not recover.
× × § × Hardware Error
Number of Flashes
2: RAM Diagnostic Error
3: ROM Diagnostic Error
4: CPU Function Diag-
nostic Error
5: FPU Function Diag-
nostic Error Hardware fault. Execute system error counter-
measures.
Warn-
ing — — — Battery Alarm Replace the battery.
§ Operation Error —
I/O Error —
Invalid Assignment Error —
Report to system register
(no LED display) MotionWorks TM
Connection Data
See the System Status Display table.
Hardware Status
(momentary stop, RUN/
STOP, testing mode,
etc.) See the System Status Display table.