6 SEQUENCE INSTRUCTIONS
6.3 Output Instructions
123
6
Resetting devices (excluding annunciator)
RST
The status of the device specified by (d) changes as follows when the RST input turns ON.
• Bit devices: Turns the coils and contacts OFF.
• Timers, counters: Sets the current value to 0, and turns coils and contacts OFF.
• Bit specification of word device: Sets the specified bit to 0.
• Word devices, module access devices, index registers: Sets content to 0.
Setting data
■
Descriptions, ranges, and data types
■
Applicable devices
*1 When using F, refer to
*2 Only the FX5 intelligent function module can use nibble specification of bit devices.
Processing details
• The status of the specified device changes as follows when the execution command turns ON.
• When the execution command is OFF, the device status does not change.
• Function when a word device is specified by the RST instruction is the same as the following circuit.
Precautions
When the RST instruction for a timer or counter is executed by a program containing a jump or by a subroutine program or
interrupt program, the timer or counter is held in a reset state, and the timer or counter may not work normally.
Ladder diagram
Structured text
ENO:=RST(EN,d);
FBD/LD
Operand
Remarks
Range
Data type
Data type (label)
(d)
Bit device number/ bit specification of word device to be
reset, or word device number to be reset
Bit/word/double word
ANY_ELEMENTARY
EN
Execution condition
Bit
BOOL
ENO
Execution result
Bit
BOOL
Operand
Bit
Word
Double word Indirect
specification
Constant
Others
(DY)
X, Y, M, L, SM,
F, B, SB, S
T, ST, C, D, W,
SD, SW, R
U
\G
Z
LC
LZ
K, H
E
$
(d)
Device
Device status
Bit devices
Turns coils and contacts OFF.
Timers, counters
Sets the current value to 0, and turns coils and contacts OFF.
Bit specification of word device
Set the specified bit to 0.
Word devices, module access device, index registers
Sets content to 0.
(d)
EN
ENO
d
X10
X10
RST
D50
MOV
K0
D50
Summary of Contents for MELSEC iQ-F FX5
Page 1: ...MELSEC iQ F FX5 Programming Manual Instructions Standard Functions Function Blocks ...
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Page 17: ...15 CONTENTS ...
Page 24: ...22 MEMO ...
Page 1050: ...1048 26 TIME DATA FUNCTIONS 26 4 Division MEMO ...
Page 1068: ...1066 29 COUNTER FUNCTION BLOCKS 29 4 Counter Function Block Operation error There is no error ...
Page 1107: ...I 1105 MEMO ...
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