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IB IL 24 AI 2/SF-230
"IB RT" Format
The measured value is represented in bits 14 through 0. An additional bit (bit 15) is available as a
sign bit.
This format corresponds to the data format used on INTERBUS RT modules.
In this data format error codes or error bits are not defined. Open circuit is indicated through the
positive final value 7FFF
Figure 14
Measured value representation in "IB RT" format (15 bits)
SB
Sign bit
Significant Measured Values
Measuring range 0 mA through 20 mA/0 V through 10 V
Input Data Word
(Two's Complement)
hex
7FFF
7FFE
4000
0001
0000
20
.
hex
0 mA Through 20 mA
I
Input
mA
≥ 19.999385
19.9987745
10.0
0.6105 µA
≤
0
AV
Analog value
0 V Through 10 V
U
Input
V
≥ 9.999695
9.999939
5.0
305.0 µV
≤
0
6232A
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