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9
DEVICE EXPLANATION
(4) Number of used N/O and N/C contacts
(5) Annunciator ON procedure
Basic
Note9.1
Note1
9
- 10
9.2 Internal User Devices
9.2.4 Annunciator (F)
There are no restrictions on the number of contacts (N/O contacts, NC contacts) used
in the program, provided the program capacity is not exceeded.
(a) Annunciator ON procedure
The annunciator can be turned ON by either of the following instructions.
1) SET F
instruction
The SET F
instruction turns ON the annunciator only on the leading edge
(OFF to ON) of the input condition.
If the input condition turns OFF, the annunciator is held ON.
The scan time can be reduced by using many annuciators, compared with the
OUT F
instruction.
2) OUT F
instruction
The annunciator can be turned ON/OFF by the OUT F
takes longer time than the SET F
every scan.
If the annunciator is turned OFF by the OUT F
instruction must be executed. For these reasons, use the SET F
to turn ON the
annunciator.Note1
POINT
If switched ON by any method other than the SET F
the annunciator functions in the same way as the internal relay.
Does not switch ON at SM62, and annunciator Nos. are not stored at SD62, SD64
to 79.
instruction, but it
instruction since it performs processing
instruction, the RST F
and OUT F
instruction
instructions,
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