14 measured-value representation – Siemens S5-135U/155U User Manual

Page 406

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9-24

System Manual

C79000-G8576-C199-06

9.3.14

Measured-Value Representation

(rated input range

$ 50 mV)

Units Input Volt-

i

V

Byte 0

Byte 1

age in mV

7

2

12

6

2

11

5

2

10

4

2

9

3

2

8

2

2

7

1

2

6

0

2

5

7

2

4

6

2

3

5

2

2

4

2

1

3

2

0

2

A

1

E

0

OV

w4096 100.0

0

1

1

1

1

1

1

1

1

1

1

1

1

0/1 0/1 1

Overflow

4095
2049

99.976

50.024

0

0

1

1

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

1

0/1

0/1

0/1

0/1

0

0

Overrange

2048
2047

50.0

49.976

0

0

1

0

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0/1

0/1

0/1

0/1

0

0

1024
1023

25.0

23.976

0

0

0

0

1

0

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0/1

0/1

0/1

0/1

0

0

1
0

–1

0.024

0.0

–0.024

0

0
1

0

0
1

0

0
1

0

0
1

0

0
1

0

0
1

0

0
1

0

0
1

0

0
1

0

0
1

0

0
1

0

0
1

1

0
1

0/1

0/1
0/1

0/1

0/1
0/1

0

0
0

Rated
range

–1023
–1024

24.976

– 25.0

1

1

1

1

1

1

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

1

0

0/1

0/1

0/1

0/1

0

0

–2047
–2048

49.976

– 50.0

1

1

1

1

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

1

0

0/1

0/1

0/1

0/1

0

0

–2049
–4095

50.024

– 99.976

1

1

0

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

1

0/1

0/1

0/1

0/1

0

0

Overrange

–4096

–100.0

1

0

0

0

0

0

0

0

0

0

0

0

1

0/1 0/1 1

Overflow

A = Active bit

E = Error bit

OV = Overflow bit

Digital
Measured-Value
Representation as
Two’s Complement

Analog Input/Output Modules

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