GE VersaMax Manual page 344

Scaling
The graphs below show the relationship between the input current measured at the field
terminals and the data that is output by the module.
Count and 4-20mA Input Current
Note 1) 4-20mA Range
4.0765mA
4.000mA
0
The following equations can be used to calculate count values:
4-20mA Range:
0-20mA Range:
Note 1) In 4-20mA mode, signal inputs below 4.077mA are converted to zero counts.
Note 2) In 4-20mA mode, signal inputs at 20.000mA or above 20.383mA are converted to 32000
GFK-1504K Chapter 10 Analog Input Modules
Analog Input Module, 15 Bit Current 15 Channels
4-20mA Range
0.5µA = 1counts
12.1925mA
4.077mA
154
12.192mA
0
24
mA
20
16
12
8
4
0
0 8192
Counts = ( Current in mA - 4mA) x (32000 / 16mA
Counts = ( Current in mA ) x (32000 / 20mA
counts
12.1935mA
12.193mA
16386
16385
20.000mA
16384
16384 24576 32767
Count
IC200ALG264
Note 2) 4-20mA Range
20.3835mA
32767
20.384mA
32000
32000
0-20mA Range
0.625µA = 1counts
10.241875mA
10.24125mA
16386
10.240625mA
16385
10.240mA
16384
)
)
10-47
10