Yaskawa MP940 Reference Manual - Manual (Page 331)

MotionSuite™ MP940 Machine Controller Reference Manual Troubleshooting Outline
9-3
LED Error List
The content of errors can be verified by the LED display status on the front of
the MP940 module. Pinpoint the location to correct the program by checking
the drawings which generate the errors, as well as the function numbers.
Then, review the content of the operation error (by reading the general error
from the content of the LED display) and refer to the content of the system
(S) register.
LED Display Light
The LEDs displaying the MP940 operation status and error content are
shown below.
Name
Display
Light Color
Meaning when Lit
RDY Green System normal
RUN Green Program running
ERR Red On/flashing at minor system fault/error
BAT Red On at battery voltage drop
PRT 1 Green Transmitting to Serial Port 1
PRT 2 Green Transmitting to Serial Port 2
RDY
RUN
ALM
BAT
PRT1
PRT2