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13 Applied Instructions (Handy Instruction)
13.1 IST / Initial State
312
FXCPU Structured Programming Manual
[Basic & Applied Instruction]
13.1 IST / Initial State
Outline
This is a command for controlling the initial state and special auxiliary relay automatically in a program by
stepladder.
1. Format and operation, execution form
2. Set data
3. Applicable devices
S: Refer to "Cautions".
FX3U(C) FX3G(C) FX3S FX2N(C) FX1N(C) FX1S FXU/FX2C FX0N FX0(S)
Instruction
name
Operation
Execution
form
Expression in each language
Structured ladder/FBD ST
IST 16 bits Continuous IST(E, s, d1, d2);
Variable Description Data type
Input
variable
EN Execution condition Bit
Head bit device number of the selector switch in the operation mode
(8 points occupied)
ARRAY [0..7] OF Bit
Output
variable
ENO Execution state Bit
Minimum state of practical state in automatic mode [d1<d2] Bit
Maximum state of practical state in automatic mode [d1<d2] Bit
Operand
type
Bit Devices Word Devices Others
System user Digit designation
System
user
Special
unit
Index
Cons
tant
Real
number
Character
string
Pointer
XYMTC S
D.b
KnX KnY KnM KnS T C D R
U\G
V Z Modifier K H E
""
P
zzz
S1
z
S2
z
S2
z
IST
EN
s
ENO
d1
d2