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MELSEC-Q/QnA
5 SEQUENCE INSTRUCTIONS
High Performance
QnA Q4AR
Basic
QCPU
PLC CPU
Process CPU
5.3.7 Setting and resetting the annunciators (SET F, RST F)
Usable Devices
Internal Devices
(System, User)
MELSECNET/10(H)
Direct J
\
Other
Set
Data
Bit Word
File
Register
Bit Word
Special
Function
Module
U
\G
Index
Register
Zn
Constant
K, H
U
D
(Only F)
[Instruction Symbol] [Execution Condition]
SET input
RST input
RST
SET
SET
D
D
RST
[Set Data]
Instruction Name Set Data Meaning Data Type
SET
D
Number of annunciator to be set (F number)
RST
D
Number of annunciator to be reset (F number)
Bit
[Functions]
SET
(1) Annunciator designated by
D
goes ON when SET input goes ON.
(2) The following responses occur when the annunciator (F) goes ON:
• The annunciator number is displayed at the LED display device at the front of the CPU
module, or the "USER" LED goes ON.
• The numbers (F numbers) of the annunciators turned ON are stored successively at the
special registers (SD63 to SD79).
• The value of SD63 is incremented by 1.
(3) If the value of SD63 is 16 (which happens when 16 annunciators are already ON), even if a
new annunciator is turned ON, its number will not be stored at SD64 to SD79.
RST
(1) Annunciators designated by
D
are turned OFF when RST input goes ON.
(2) The annunciator numbers (F numbers) of annunciators that have gone OFF are deleted from
the special registers (SD64 to SD79), and the value of SD63 is decremented by 1.
REMARK
(1) Refer to the User's Manual (Functions Explanation, Programming Fundamentals) of the
used CPU module or QnACPU Programming Manual (Fundamentals), Section 4.2.5, for
details of annunciators.
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