Delta Electronics Programmable Logic Controller DVP-PLC User Manual
Page 578
10 Application Instructions API 200-249
DVP-PLC Application Manual
10-4
= slope × (S
1
– min. source value) + min. destination value = (S
1
– min. source value) × (max. destination
value – min. destination value) ÷ (max. source value – min. source value) + min. destination value
7. If
S1
> max. source value, S1 = max. source value
If S1 < min. source value, S1 = min. source value
When all the input values and parameters are set, the output curve is shown as the figure:
D
1
Min. destination value
Max. Destination value
Destination value
Source value
Max.
source value
Min.
source value
Program Example 1:
1. Assume
S
1
= 500, max. source value D0 = 3,000, min. source value D1 = 200, max. destination value D2 = 500,
and min. destination value D3 = 30. When X0 = On, SCLP instruction will be executed and obtain the proportional
value at D10.
2. Equation: D10 = [(500 – 200) Ч (500 – 30)] ч (3,000 – 200) + 30 = 80.35. Round off the result into an integer D10
= 80.
X0
SCLP
K500
D0
D10
X0
MOV
MOV
MOV
MOV
K3000
K200
K500
K30
D0
D1
D2
D3
D
S
1
0
=500
=30
=500
Source value
Destination value