Mitsubishi Electric MELSEC-Q Series User Manual page 171

10 DEVICES
10 - 13
(2) Anunciator ON procedure
(a) Anunciator ON procedure
Anunciator operation can be controlled by the SET F
F instructions.
1) The SET F
edge (OFF to ON) of the input condition, and keeps the anunciator ON
when the input condition switches OFF.
In cases where many anunciators are used, the OUT F
can be used to speed up the scan time.
2) The OUT F
longer to do so than the SET F
switched OFF by using an OUT F
execution of an RST F
instruction to switch the anunciator ON.
POINT
(1) If switched ON by any method other than the SET F
instructions, the anunciator functions in the same way as the internal relay.
(Does not switch ON at SM62, and anunciator Nos. are not stored at SD62,
SD64 to SD79.)
(b) Processing at anunciator ON
1) Data stored at special registers (SD62 to SD79)
a) Nos. of anunciators which switched ON are stored in order at
SD64 to SD79.
b) The anunciator No. which was stored at SD64 is stored at SD62.
c) "1" is added to the SD63 value.
SD62
0
SD63
0
SD64
0
SD65
0
SD66
0
SD67
0
SD79
0
2) CPU LED indication
When any annunciator turns ON, the "ERR." LED on the front of the
Basic model QCPU is lit.
(3) Anunciator OFF procedure & processing content
(a) Anunciator OFF procedure
An anunciator can be switched OFF by the RST F , BKRST, and OUT F
instructions.
1) An anunciator No. which has been switched ON by the SET F
instruction can be switched OFF by the RST F
2) Use the BKRST instruction if you want to switch all the anunciator Nos.
within a specified range.
instruction switches the anunciator ON only at the leading
instruction can switch the anunciator ON or OFF. It takes
or BKRST instruction. Use a SET F
SET F50 SET F25 SET F1023
50 50
1 2
50 50
0 25
0 0
0 0
0 0
MELSEC-Q
and OUT
instruction. If the anunciator is
instruction, this will require the
and OUT F
50
3
50
25
Up to 16 annunciator
1023
No. can be stored.
0
0
instruction.
instruction
10 - 13