5. SEQUENCE INSTRUCTIONS
5 − 15
MELSEC-A
POINTS
(1) When F (annunciator) is turned ON, LED indicators and ERROR LEDs on
the CPU module illuminate, and the number of annunciator which is turned
ON is stored in special registers. For details, refer to the ACPU
Programming Manual (Fundamentals).
(2) If the OUT instruction is used to turn ON the annunciator, annunciator coil
status does not correspond to the display of LED indicators. To avoid this,
use the SET instruction to turn ON the annunciator.
If the OUT instruction is used to turn ON the annunciator, the annunciator
coil turns OFF when the operation result of instructions preceding the OUT
instruction turns OFF. However, display contents of LED indicators and
ERROR LEDs on the CPU module and contents of special registers do not
change.
For details, refer to the ACPU Programming Manual (Fundamentals).
REMARK
The number of steps is 3 when either of the following devices is used for OUT instruction:
• Special relay (M)
• Annunciator (F)
To Next Page
Loading...
