Chapter 7 Usage of Functions
7- 6 4
8) Program example
(1) Distinction program of A/D conversion value(Analog input range: DC4
∼
20
㎃
, 0~10VDC)
a) Program explanation
-
When digital value of channel 0 is the same or more than 2000 and the same or less than 3000, P090 is on.
-
When digital value of channel 1 is the same or more than 2000 and the same or less than 3000, P091 is on.
-
When digital value of channel 2 is the same or more than 2000 and the same or less than 3000, P092 is on.
-
When digital value of channel 3 is the same or more than 2000 and the same or less than 3000, P093 is on.
b) System configuration
(a) Analog input
channel “0”, “1” : Voltage input(0
∼
10VDC)
channel “2”, “3” : Current input(DC 4
∼
20
㎃
)
(b) Parameter setting
(c) System configuration
Base Unit A/D conversion module Expansion unit output
c) Program
I/O allocation
Base unit input : P000 ~ P03F
Base unit output : P050 ~ P07F
A/D conversion module : P080 ~ P08F
Expansion unit output : P090 ~ P09F
