IB IL 24 AI 2/SF-230
14
6232A
INTERBUS IN Process Data Input Words
The measured values are transmitted, per channel, through the INTERBUS IN process data input
words to the controller board or the computer.
Figure 11
Sequence of the process data input words in the INTERBUS ring and display of the bits
of the first process data word in different formats
SB
Sign bit
OC
Open circuit
AV
Analog value
OR
Overrange
0/4
Measuring range 4 through 20 mA
MSB
Most significant bit
LSB
Least significant bit
C h a n n e l 1
M S B
L S B
C h a n n e l 2
P r o c e s s d a t a w o r d 1
P r o c e s s d a t a w o r d 2
0
1 4
1 3
1 2
1 1
1 0
9
8
7
6
5
4
3
2
1
1 5
S B
A V
0
1 4
1 3
1 2
1 1
1 0
9
8
7
6
5
4
3
2
1
1 5
O R
0 / 4
O C
S B
A V
S T
I L
R T
S t a n d a r d i z e d
D i s p l a y
F o r m a t :
5 5 6 4 A 0 0 9