ANALOG IN 15 BIT VOLTAGE/CURRENT 8CH IC220ALG221
6226B_GE
21
"IB RT" Format
The measured value is represented in bits 14 to 0. An additional bit (bit 15) is available as a sign bit.
This format corresponds to the data format used on INTERBUS RT modules.
Diagnostic codes and error bits are not defined in this data format. An open circuit is indicated by the
positive final value 7FFF
hex
.
Measured value representation in "IB RT" format (15 bits):
Significant Measured Values
Voltage Ranges
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
SB
Analog value
SB
Sign bit
Input Data Word
(Two’s Complement)
0 V to 5 V
U
IN
0 V to 10 V
U
IN
0 V to 25 V
U
IN
0 V to 50 V
U
IN
hex
dec
V
V
V
V
7FFF
32767
≥
+4.999847
≥
+9.999695
≥
+24.999237
≥
+49.998474
7FFE
32766
+4.999695
+9.999390
+24.998474
+49.996948
4000
16384
+2.5
+5
+12.5
+25.0
0001
1
+152.6 µV
+305.2 µV
+762.9 µV
+1.5259 mV
0000
0
0
0
0
0
Input Data Word
(Two’s Complement)
±5 V
U
IN
±10 V
U
IN
±25 V
U
IN
hex
dec
V
V
V
7FFF
32767
≥
+4.999847
≥
+9.999695
≥
+24.999237
7FFE
32766
+4.999695
+9.999390
+24.998474
4000
16384
+2.5
+5.0
+12.5
0001
1
+152.6 µV
+305.2 µV
+762.9 µV
0000
0
0
0
0
FFFF
-1
-152.6 µV
-305.2 µV
-762.9 µV
C000
-16384
-2.5
-5.0
-12.5
8001
-32767
-4.999847
-9.999695
-24.999237
8000
-32768
≤
-5.0
≤
-10.0
≤
-25.0