Mitsubishi Electric MELDAS C6 Programming Manual page 169

LDD<>, ANDD<>, ORD<> .... Comparison of 32-bit data (<>)
Bit device
X Y M L F B SB T SM V T
S1
S2
LDD<>
ANDD<>
ORD<>
Function
(1) 16-bit comparison operation is executed with "A" contact handling.
(2) The comparison operation results will be as follow.
Conditions
S1<>S2
S1=S2
Execution conditions
The execution conditions for LDD<>, ANDD<> and ORD<> are as follow.
Command
LDD<>
ANDD<>
ORD<>
8. Function Commands
LD<>, AND<>, OR<>
Usable device
Word device
C D R W SW Z SD K
S1 S2
D<>
S1 S2
D<>
D<> S1
S2
Comparison operation results
Continuity state
Non-continuity state
Executed per scan
Executed only when previous contact command is ON
Executed per scan
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Con-
Pointer
stant
H P
Setting data
Comparison data or
S1
head No. of device
where comparison
S2
data is stored.
Execution conditions
Digit
No. of
desig- Index
steps
nation
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