YASKAWA JEPMC-MP2300-Y Series User Manual page 547

12.3.3 LED Indicators
( 1 ) LED Indicators
RDY RUN
ERR ALM
TRX BAT
( 2 ) LED Indicator Meanings
Classification
RDY RUN
Not lit Not lit
Not lit Not lit
Not lit Lit
Normal
operation
Lit Not lit
Lit Lit
The status of the LED indicators on the front of the MP2300 can be used to determine the error
status and meaning.
The locations in the program that need to be corrected can be determined by using the LED
indicator status to determine the general nature of the error, using the contents of system (S)
registers to check drawings and function numbers causing the error, and knowing the meaning
of operation errors.
The following table shows how to use the LED indicators to determine the operating status of the
MP2300, as well as relevant error information when the LED indicator status indicates an error.
LED Indicator
ALM ERR BAT
Lit Lit Not lit
Not lit Not lit Not lit
Not lit Not lit Not lit
Not lit Not lit Not lit
Not lit Not lit Not lit
Indicator Details
Hardware reset status
Initialization
Drawing A (DWG.A) being executed.
User program stopped.
(Offline Stop Mode)
User program being executed
normally.
12.3 Troubleshooting
Countermeasures
Usually the CPU will start within
10 seconds. If this status continues for
more than 10 seconds, either a
program error or hardware failure has
occurred. Refer to 12.4 Troubleshoot-
ing System Errors on page 12-9 and
correct any system errors.
This status occurs
• When the stop operation is executed
from the MPE720
• When the STOP switch is turned
ON
This status does not indicate an error.
This is the normal status.
12-7