LS Industrial Systems XBC-DN10E, Руководство пользователя, Страница: 239 / 542

Chapter 6 Instruction Details
XBC E-Type Main Unit 6-122 Ver. 1
6.23 Compare Instruction, Signed (Input Position*)
6.23.1 Compare (16-Bit: <, <=, <>, =, >, >= ) (32-Bit: D<, D<=, D<>, D=, D>, D>=)
Instruction
Area Available
Step
Flag
P M K F L T C S Z D.x R.x
Con
st.
U N D R
Error
(F110)
Zero
(F111)
Carry
(F112)
x
(compare
operators)
S1 O O O O O O O - O - - O O O O O
2~3 - - -
S2 O O O O O O O - O - - O O O O O
16-Bit
x Operators
32-Bit
x Operators
Name Condition
Operation
result
Condition
Operation
result
< D< Less Than S1 < S2 On
S1
≥
S2
Off
<= D<=
Less Than or Equal To
S1
≤
S2 On S1 > S2 Off
<> D<>
Not Equal To
S1
≠
S2
On S1 = S2 Off
= D= Equal To S1 = S2 On
S1
≠
S2
Off
> D>
Greater Than
S1 > S2 On S1
≤
S2 Off
>= D>=
Greater Than or Equal To
S1
≥
S2 On S1 < S2 Off
Operand Description Data Type
S1 First Data or Data address to compare INT/DINT
S2 Second Data or Data address to compare INT/DINT
*Note: Compare instruction must be used in Input (Contact) Position of ladder rung. This instruction uses 3
contact points.
1) LOAD x (16-Bit: <, <=, <>, =, >, >= ) (32-Bit: D<, D<=, D<>, D=, D>, D>=)
a) Ladder Structure: Compares S1 with S2. If x operation is true, coil CR1 will be On. Otherwise CR1 will be Off.
b) Example: When Data Register D1000=10 < D2000 (i.e when D1000=5; D2000=10), Compare Input Signal is
On and h1500 is saved in P0160 (I/O Device) area.
2) AND x (16-Bit: <, <=, <>, =, >, >= ) (32-Bit: D<, D<=, D<>, D=, D>, D>=)
a) Ladder Structure: If contact C1 is On AND the x comparison condition is true, then coil CR1 will be On.
Otherwise CR1 will be Off.
x S1 S2 LOAD x
Coil
CR1
x S1 S2 AND x
Contact
Coil
CR1 C1
Input Positions
Output
Position