Mitsubishi Electric MELDAS C6 Programming Manual page 161

LDD>, ANDD>, ORD>, 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>
LDD>=
ANDD>=
ORD>=
Function
(1) 32-bit comparison operation is executed with "A" contact handling.
(2) The comparison operation results will be as follow.
Command
LDD>, ANDD>, ORD>
LDD>=, ANDD>=, ORD>=
Execution conditions
The execution conditions for LDD>, ANDD>, ORD>, LDD>=, ANDD>= and ORD>= are as follow.
Command
LDD>, LDD>=
ANDD>, ANDD>=
ORD>, ORD>=
8. Function Commands
LDD>, ANDD>, ORD>, LDD>=, ANDD>=, ORD>=
Usable device
Word device
C D R W SW Z SD K
D> S1 S2
D>
S1 S2
D> S1 S2
D>=
S1 S2
D>= S1 S2
D>= S1 S2
Conditions
S1>S2
S1<=S2
S1>=S2
S1<S2
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.
Comparison operation results
Continuity state
Non-continuity state
Continuity state
Non-continuity state
Execution conditions
Digit
No. of
desig- Index
steps
nation
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