Mitsubishi Electric MELSEC iQ-R Series Programming Manual page 198

Processing details
• This instruction turns off the annunciator specified by (d) when the execution command turns on.
• The annunciator number (F number) turned off is deleted from the special register (SD64 to SD79), and the value in SD63
is decremented by one.
• If the value in SD63 is 16, the corresponding annunciator number is deleted from SD64 to SD79 by the RST instruction. If
an annunciator with a number not registered in SD64 to SD79 has been turned on, the number is newly registered. If all
annunciator numbers in SD64 to SD79 are reset (turned off), the USER LED of the CPU module turns off.
Ex.
When the value in SD63 is 16 and there is an annunciator number that is not registered
SD63 16
SD64 233
SD65 90
SD66 700
SD67 28
SD78 145
SD79 1027
(1) Reset F90.
(2) The F number in SD66 is shifted to this area.
(3) New F number is stored.
Operation error
There is no operation error.
5 SEQUENCE INSTRUCTIONS
196
5.3 Output Instructions
SD63
SD64
(1)
SD65
SD66
SD77
SD78 1027
SD79
16
233
(2)
700
28
145
(3)