Rockwell Automation 1761-HHP-B30 MicroLogix 1000 with Hand-Held Programmer (HHP) - Manual (Page 119)

Chapter 7
Using Analog
7–5
To determine an approximate current that an input value represents, you can
use the following equation:
 input value ➁ =
input current (mA)
21 mA
32,767
➁
The Input Value is the decimal value of the word in the
input image for the corresponding analog input.
For example, if an input value of 4096 is in the input image,
the calculated value is:
 4096 =
2.625(mA)
It should be noted that the actual value may vary within
the accuracy limitations of the module.
21 mA
32,767
Converting Analog Output Data
Use the following equation to determine the decimal value for the current
output:
 [Desired Current Output (mA) – 4 mA] = Output Decimal Value
For example, if an output value of 8 mA is desired, the value to be put in the
corresponding word in the output image can be calculated as follows:
 (8 mA – 4 mA) =
8192
32,767
16 mA
32,767
16 mA
Use the following equation to determine the decimal value for the voltage
output:
 Desired Voltage Output (V dc) = Output Decimal Value
For example, if an output value of 1V dc is desired, the value to be put in the
corresponding word in the output image can be calculated as follows:
 1V dc =
3277
32,767
10V dc
10V dc
32,767