YASKAWA JEPMC-MP2300-Y Series User Manual page 552

12 Maintenance and Inspection
12.4.2 Troubleshooting Flowchart for System Errors
12.4.2 Troubleshooting Flowchart for System Errors
Hardware failure/watchdog timer timeout
DIP siwtch SW6 and turn ON the
User program
Check the location of the error
referring to 12.4.3 Correcting
User Program Errors on page
12-13.
12-12
A troubleshooting flowchart for system errors is provided below.
START
Use the LED indicator
*
pattern to classify the
error.
Battery alarm
indicator
BAT lit?
NO
Classifications = Warning
ALM indicator lit or
blinking?
NO
Classifications = Fatal error
ERR indicator blinking?
NO
Only ERR indicator lit?
YES
Turn OFF the STOP switch on
power.
Online Stop Mode
Only RDY indicator lit?
YES
error
Check SW00050.
Watchdog timer timeout?
YES
User program error
* For LED indicator pattern, refer to 12.3.3 ( 2 ) LED Indicator Meanings on page 12-7.
YES
Replace battery.
Alarm
YES
Fatal error
YES
NO
NO
Hardware
failure
NO
Check CPU Error Status (SW00041).
(1) Operation error (SB000418)
Refer to 12.4.4 ( 3 ) Ladder Program User Opera-
tion Error Status on page 12-16.
(2) I/O error (SB000419)
Refer to 12.4.4 ( 5 ) System I/O Error Status on
page 12-18.