Siemens 2AO U HF, Manual, Page: 16 / 22

Analog value representation
4.3 Output ranges
2AO U HF analog electronic module (6ES7135-4LB02-0AB0)
16
Manual, 04/2007, A5E01076940-01
Output value
The following table shows the representation of the binary analog values and the
corresponding decimal and hexadecimal representation of the units of the analog values.
The table below shows the resolutions 11, 12, 13, and 15 bit + sign. Each analog value is
entered left aligned in the ACCU. The bits marked with "x" are set to "0".
Table 4-2 Output values (SIMATIC S7 format)
Units Analog value Resolution in bits
Decimal Hexadecimal High byte Low byte
11+S 16 10
H
S 0 0 0 0 0 0 0 0 0 1 x x x x
12+S 8 8
H
S 0 0 0 0 0 0 0 0 0 0 1 x x x
13+S 4 4
H
S 0 0 0 0 0 0 0 0 0 0 0 1 x x
15 + sign 1 1
H
S 0 0 0 0 0 0 0 0 0 0 0 0 0 1
4.3 Output ranges
Voltage output ranges: ±5 V and ±10 V
Table 4-3 SIMATIC S7 format: Output range ±5 V and ±10 V
Output range
±5 V
Output range
±10 V
Units Range
0 0 > 32511 > 7EFF
H
Overflow
5,8800
:
5,0002
11,7589
:
10,0004
32511
:
27649
7EFF
H
:
6C01
H
Overshoot range
5,0000
3,7500
:
-3,7500
-5,0000
10,0000
7,5000
:
- 7,5000
- 10,0000
27648
20736
:
-20736
-27648
6C00
H
5100
H
:
AF00
H
9400
H
Nominal range
-5,0002
:
-5,8800
- 10,0004
:
- 11,7589
-27649
:
-32512
93FF
H
:
8100
H
Underrange
0 0 < -32512 < 8100
H
Underflow