8 APPLICATION INSTRUCTION
8.19 Initial State
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8
8.19
Initial State
Initial State
IST
Automatically controls the initial state and special relays in a step ladder program.
Setting data
■
Descriptions, ranges, and data types
■
Applicable devices
*1 S cannot be used.
*2 Only S can be used.
*3 T, ST, C cannot be used.
Processing details
• Specify the head input in the operation mode in (s).
• Selector switches in the operation mode occupy eight devices from the head device.
Ladder diagram
Structured text
ENO:=IST(EN, s, d1, d2);
FBD/LD
Operand
Description
Range
Data type
Data type (label)
(s)
Head bit device number of the selector switch in the operation
mode
Bit
ANYBIT_ARRAY
(Number of elements: 8)
(d1)
Smallest state relay number of practical state relays in the
automatic mode
((d1) < (d2))
Bit
ANY_BOOL
(d2)
Largest state relay number of practical state relays in the
automatic mode
((d1) < (d2))
Bit
ANY_BOOL
EN
Execution condition
Bit
BOOL
ENO
Execution result
Bit
BOOL
Operand
Bit
Word
Double word Indirect
specification
Constant
Others
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
$
(s)
(d1)
(d2)
(s)
(d1) (d2)
EN
ENO
s
d1
d2
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 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 ...
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