6.3
Troubleshooting
6-7
6
Maintenance and Inspection
* 4. For information on the relationship between the registers from SW03200 to SW03215 and system work numbers,
refer to 6.4.5 ( 9 ) Motion Program Execution Information.
* 5. An alarm code of a motion program can be obtained from the program information used by work (58 words). Get the
system work number first and then the alarm codes, referring to 6.4.5 ( 9 ) Motion Program Execution Information.
The alarm code is written in each set of parallel information. If no parallel execution instruction such as PFORK,
JOINTO, and PJOINT is used, the alarm code is stored in the parallel 0 information.
6.3.3 LED Indicators
( 1 ) LED Indicators
( 2 ) LED Indicator Meanings
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.
The status of the LED indicators on the front of the MP2300 Basic Module 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.
Classification
LED Indicator
Indicator Details Countermeasures
RDY RUN ALM ERR BAT
Normal
operation
Not lit Not lit Lit Lit Not lit
Hardware reset status
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 6.4 Troubleshoot-
ing System Errors on page 6-9 and
correct any system errors.
Not lit Not lit Not lit Not lit Not lit
Initialization
Not lit Lit Not lit Not lit Not lit
Drawing A (DWG.A) being executed.
Lit Not lit Not lit Not lit Not lit
User program stopped.
(Offline Stop Mode)
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.
Lit Lit Not lit Not lit Not lit
User program being executed
normally.
This is the normal status.
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