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24
SELF-CHECKING MODE
VI. Checking for External Input
Prepare the cable assembly as shown in the right figure and connect this cable to CN2. Checking
proceeding is as follows.
By turning switch 1 ON, LED1 is turning ON → By turning switch 1 OFF and switch 2 ON, LED2 is
turned ON
→ By turning switch 1 and 2 ON, LED1 and LED2 are turned ON
(LED is maintained to light ON until pressing the "CHECK" switch.)
VII.Checking for EEPROM
Refer to EEPROM clearing procedure of page 22.
VIII.Checking for IC for watch-dog timer
Checking is performed automatically.
NOTE:
- By pressing the "UNIT SELECTION
switches simultaneously until starting 02 test (Checking for Switch and DSW), the mode is
changed to EEPROM checking mode.
- "04" External Output and "05" External Input checks are changed to the next procedure by
pressing the "CHECK" switch.
1
2
3
Resistance
CN3
Switch 1
1
2
3
Switch 2
CN2
∧
", " UNIT SELECTION
LED1
LED2
∨
" and "MODE CHANGE"
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