Yaskawa MP920 User's Manual Design - Manual (Page 494)

12 Troubleshooting
12.1.3 Indicator Errors
12-4
12.1.3 Indicator Errors
Error details can be checked by the status of indicators on the front of the MP920 Module.
In the process, we narrow down the repair location in a program by getting an overview of
the error from indicators, checking the contents of the system (S) registers, examining the
drawing or function number that caused the error and then getting an overview of operation
error details.
„ Indicators
The following indicators show operating status and error details for the MP920.
Indicator Section Indicator
Name
Indicator
Color
Significance When Lit
RDY Green System operating normally
RUN Green User program running
ERR Red System error
ALM Red Minor system error
PRT1 Green/Red Port 1 sending/receiving
PRT2 Green/Red Port 2 sending/receiving.
BAT Red Low battery voltage
RDY
ERR
PRT1
BAT
RUN
ALM
PRT2