DL205 Analog Manual, 7th Edition Rev. D
15-24
Chapter 15: F2-8AD4DA-1, 8-Ch. In / 4-Ch. Out Analog Current Combination
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
B
C
D
Input Engineering Unit Conversion Example 3:
Data format = BCD,
Channel 1 data memory location = V2000,
Channel 1 resolution = 12 bits,
Channel 1 engineering units = 0.0–140.0 PSI,
Channel 1 input device = 4–20 mA transmitter.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
b
C
D
SUB
V2030
MUL
K1400
Subtract 819;
12 bit digital value for 4mA offset.
(This rung not used if input transmitter is 0--20 mA.)
Multiply by 1400;
EU range X 10 for implied decimal.
DIV
K3276
Divide by 3276;
12 bit digital range for 4--20 mA.
(For 0--20 mA xmitter: use 4095.)
OUT
V2100
Store input EU value in V2100.
LD
V2000
C0
Load input channel 1 digital value into accumulator.
(If input not less than 4mA.)
OUT
C0
V2000
K819
C0 is on when analog input is less than 4mA;
819 = 4mA @ 12 bits.
(This rung not used if input transmitter is 0--20 mA.)
OUT
V2030
Store input offset value in V2030.
LD
K819
SP0
Load constant 819 into accumulator;
12 bit digital value for 4mA offset.
OUT
V2100
Store value of 0 in V2100
(This rung not used if input transmitter is 0--20 mA.)
LD
K0
Load value of 0 into accumulator.
(If input less than 4mA.)
(This rung not used if input transmitter is 0--20 mA.)
C0
Summary of Contents for DL205
Page 1: ...DL205 Analog I O Manual Manual Number D2 ANLG M ...
Page 2: ...Notes ...
Page 6: ...Notes ...
