IDEC MICROSmart FC6A Series Ladder Programming Manual page 161

Examples: ADD
• Data Type: Word
This example demonstrates the use of a carry signal from special internal relay M8003 to set an alarm signal.
ADD(W)
SOTU
I0
Acknowledge M8003
Pushbutton
I1
• Data Type: Integer
ADD(I) S1 –
D10
I0
• Data Type: Double Word
ADD(D) S1 –
D10
I0
D10·D11
• Data Type: Long
ADD(L) S1 –
D10
I0
D10·D11
• Data Type: Float
ADD(F) S1 –
D10
I0
D10·D11
Example: SUB
• Data Type: Word
The following example demonstrates the use of special internal relay M8003 to process a borrow.
SOTU
I0
M8003
S1 – S2 – D1 –
D2 500 D2
S2 – D1 – REP
D20 D30
S2 – D1 – REP
D20 D30
1957400 + D20·D21
S2 – D1 – REP
D20 D30
216283 + D20·D21
S2 – D1 – REP
D20 D30
1.414 + D20·D21
SUB(W) S1 – S2 –
D12 7000
SUB(W) S1 – S2 –
D13 1
FC6A S MICROS L
ERIES MART
7: B
D2 + 500 → D2
REP
When a carry occurs, output Q0 is assigned as a warning indicator.
S
When the acknowledge pushbutton (input I1) is pressed, the warning
Q0
indicator is reset.
R
Q0
D10 –4 + D20
4112600
–964355
3.14
D12 – 7000 → D12
D1 – REP
D12
Borrow is processed so that the number of times a borrow
occurs is subtracted from D13.
D1 – REP
D13 When a borrow occurs, D13 is decremented by one.
P M
ADDER ROGRAMMING ANUAL
A
INARY RITHMETIC
–11 D30
D30·D31 6070000
D30·D31 –748072
D30·D31 4.554
FC9Y-B1726
I
NSTRUCTIONS
–15
7-3