Mitsubishi Electric MELDAS 60 Series Programming Manual page 88

LDD<, ANDD<, ORD< ... Comparison of 32-bit data (<)
Bit device
X Y M L SM F
S1
S2
LDD<
ANDD<
ORD<
Function
(1) 32-bit comparison operation is executed with "A" contact handling.
(2) The comparison operation results will be as follow.
Conditions Comparison operation results
S1<S2
S1>=S2
Execution conditions
The execution conditions for LDD<, ANDD< and ORD< are as follow.
Command
LDD<
ANDD<
ORD<
Usable device
Word device
T C D R Z
D< S1 S2
S1
D< S2
D< S1 S2
Continuity state
Non-continuity state
Execution conditions
Executed per scan
Executed only when previous
contact command is ON
Executed per scan
Con-
Pointer
stant
K H P
- 80 -
LDD<, ANDD<, ORD<
Digit
No. of
desig-
Level steps Index
nation
N
3/4
Setting data
Comparison data or
S1
head No. of device
where comparison
S2
data is stored.