Self-Diagnosis Execution Method - Mitsubishi Electric A1SJ71PB96F User Manual

5. PROCEDURES BEFORE SYSTEM OPERATION
5.4

Self-diagnosis Execution Method

(1) Self-diagnosis method
The AJ71PB96F/A1SJ71PB96F self-diagnosis method is conducted using the following
procedure.
(a) Set the mode setting switch to "2."
(b) The PC CPU will stop.
(c) The PC power will turn on. In addition, the PC CPU will be reset.
(d) The AJ71PB96F/A1SJ71PB96F self-diagnosis will be executed, and results will be displayed
(2) Test results
The results of the executed test are displayed as shown below (LED B0 to B6 display status).
(a) MPU test
(b) Timer test
(c) Interrupt test
(d) DRAM test
When the test results are normal, tests (a) to (d) are repeated. If an error is detected, then the
LED status at the tie the error occurs for that test will be displayed.
using the LEDs (B0 to B6).
Test item
During test
Error
During test
Error
During test
Error
During test
Error
B6 B5 B4
































5-6
MELSEC-A
LED
B3 B2 B1 B0


  


 


 
 

 



   

  


  
 
 
  


: Turned off : Turned on
TEST