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8. Function Commands
LDD>, ANDD>, ORD>, LDD>=, ANDD>=, ORD>=
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{ LDD>, ANDD>, ORD>, LDD>=, ANDD>=, ORD>= ... Comparison of 32-bit data (>, >=)
Usable device
Bit device Word device
Con-
stant
Pointer
X Y M L F BSB T SM VTCDRWSWZSDKH P
Digit
desig-
nation
Index
No. of
steps
S1
{
{ { { { { {
{
{ { { { { { { { { {
S2
{
{ { { { { {
{
{ { { { { { { { { {
{ {
3/4
LDD>=
D>
S2
Setting data
S1
S2
S1
D> S2S1
D>= S2S1
ANDD>=
D>=
S2S1
D>= S2S1
ORD>=
D>
S2S1
ORD>
ANDD>
LDD>
Comparison data or
head No. of device
where comparison
data is stored.
Function
(1) 32-bit comparison operation is executed with "A" contact handling.
(2) The comparison operation results will be as follow.
Command Conditions Comparison operation results
S1>S2 Continuity state LDD>, ANDD>, ORD>
S1<=S2 Non-continuity state
S1>=S2 Continuity state LDD>=, ANDD>=, ORD>=
S1<S2 Non-continuity state
Execution conditions
The execution conditions for LDD>, ANDD>, ORD>, LDD>=, ANDD>= and ORD>= are as follow.
Command Execution conditions
LDD>, LDD>= Executed per scan
ANDD>, ANDD>= Executed only when previous contact command is ON
ORD>, ORD>= Executed per scan