Filter
Top Products
6 Step Ladder Instructions
6.2 STL
100
FXCPU Structured Programming Manual
[Basic & Applied Instruction]
6.2 STL
Outline
In programs using step ladder instructions, a state relay State S is assigned to each process based on
machine operations, and input condition and output control are programmed as sequences connected to the
state output.
STL instruction for step ladder programs is expressed as follows in each language.
1. Format and operation, execution form
2. Set data
3. Applicable devices
4. Caution
Refer to the cautions in the items below for expressing step ladders in a structured project (Structured ladder/
FBD, ST).
→ Section 6.3 RET
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
STL 16 bits Continuous STL(EN,s);
Variable Description Data type
Input
variable
EN Execution condition Always TRUE
Output
variable
Target device or variable Bit
ENO Execution state Bit
Operand
type
Bit Devices Word Devices Others
System User Digit Specification
System
User
Special
Unit
Index
Constant
Real
Number
Character
String
Pointer
XYMTCS
D.b
KnX KnY KnM KnS T C D R
U\G
VZModifier K H E
""
P
z
STL
EN
s
ENO