9
DEVICE EXPLANATION
9
- 15
9.2 Internal User Devices
9.2.5 Annunciator (F)
(5) Annunciator ON procedure
(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 R 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 instruction, but it
takes longer time than the SET F instruction since it performs processing
every scan.
If the annunciator is turned OFF by the OUT F instruction, the RST F
instruction/LEDR instruction
Note9.3
/BKRST instruction must be executed. For
these reasons, use the SET F instruction to turn ON the annunciator.Note3
POINT
1. If switched ON by any method other than the SET F and OUT F instructions,
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.
2. When the annunciator is tracked from the control system to the standby
system by the tracking function of the Redundant CPU, the annunciator in the
standby system will not turn ON.
Refer to the following manual for the processing when the annunciator is
tracked.
QnPRHCPU User's Manual (Redundant System)
Note3
Basic
Note9.3
The Basic model QCPU cannot use the LEDR instruction.
Basic
Note9.3
To Next Page
Loading...
