Specifications

SIMATIC Instructions
9-11
S7-200 Programmable Controller System Manual
C79000-G7076-C233-01
Compare Integer
The Compare Integer instruction is used to compare two
values: IN1 to IN2. Comparisons include: IN1 = IN2,
IN1 >= IN2, IN1 <= IN2, IN1 > IN2, IN1 < IN2, or
IN1 <> IN2.
Integer comparisons are signed (16#7FFF > 16#8000).
In LAD, the contact is on when the comparison is true.
In FBD, the output is on when the comparison is true.
In STL, the instructions Load, AND, or OR a 1 with the
top of stack when the comparison is true.
Inputs/Outputs Operands Data Types
Inputs IW, QW, MW, SW, SMW, T, C, VW, LW, AIW, AC, Constant, *VD,
*AC,*LD
INT
Outputs (FBD) I, Q, M, SM, T, C, V, S, L, Power Flow BOOL
L
A
D
LDW= IN1, IN2
AW= IN1, IN2
OW= IN1, IN2
LDW>= IN1, IN2
AW>= IN1, IN2
OW>= IN1, IN2
LDW<= IN1, IN2
AW<= IN1, IN2
OW<= IN1, IN2
F
B
D
LDW<> IN1, IN2
AW<> IN1, IN2
OW<> IN1, IN2
LDW< IN1, IN2
AW< IN1, IN2
OW< IN1, IN2
LDW> IN1, IN2
AW> IN1, IN2
OW> IN1, IN2
IN1
==I
IN2
222 224
333
221
S
T
L
==I