Chapter 7 Usage of Functions
7-
５３
Conversion method is as below
1) scaling conversion value (A/D conversion) = [(data of 0 ~ 20
㎃
) – 800] x 4000/3200
example) in case of 8
㎃
input at range 0 ~ 20
㎃
before the scaling conversion : 8
㎃
/ 5
㎂
= 1600
after the scaling conversion : (1600 –800) x 1.25 = 1000
2) scaling conversion value (D/A conversion) = [(data of 4 ~ 20
㎃
) x 3200/4000] + 800
example) in case of ‘ 1000’ output at range 4 ~ 20
㎃
current output value before the scaling conversion : 1000 x 5
㎂
= 5
㎃
current output value after the scaling conversion : (1000 x 0.8) + 800 = 1600
1600 x 5
㎂
= 8
㎃
