FAQ


FAQAbout Products

- FAQ > Controllers > Programmable Controllers MELSEC > MELSEC-Q Series > Turning ON/OFF annunciators (F)
FAQ
Turning ON/OFF annunciators (F)
The data in the following special registers does not change when annunciators (F) are turned ON/OFF using MOV instructions.
- SD62(Annunciator number)
- SD63(Number of annunciators)
- SD64 to SD79(Table of detected annunciator numbers)
How do I change the data in the special registers above?
- SD62(Annunciator number)
- SD63(Number of annunciators)
- SD64 to SD79(Table of detected annunciator numbers)
How do I change the data in the special registers above?
- Category :
Answer
The data in the special registers SD62 to SD79 change with the following process.
- Turn ON the registers with OUT and SET instructions.
- Turn OFF the registers with a RST instruction.
- Execute an LEDR instruction.
The data cannot be changed using MOV instructions. Use above instructions to turn ON/OFF annunciators (F).
- Turn ON the registers with OUT and SET instructions.
- Turn OFF the registers with a RST instruction.
- Execute an LEDR instruction.
The data cannot be changed using MOV instructions. Use above instructions to turn ON/OFF annunciators (F).
- Product Name
- MELSEC-Q Series
- Series
- CPU