Analog Input/Output Modules

9.7.9Measured-Value Representation

Digital

Measured-Value

Representation as

Two's Complement

Units

Output Voltage or Current of the

470 Analog Output Module

Byte 0

Byte 1

-4UA/B12

-4UA12

-4UC12

7

6

5

4

3

2

1

0

7

6

5

4

3

2

1

0

211 210 29 28 27 26 25 24

23 22 21 20 x x x x

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1280

1025

12.5 V

10.0098 V

25.0mA

20.0195mA

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

6.0 V

24.0 mA

0

1

0

1

0

0

0

0

0

0

0

0 Overrange

5.004 V

20.016 mA

0

1

0

0

0

0

0

0

0

0

0

1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1024

1023

512

256

128

64

1

0

± 1

±64

±128

±256

±512

±1024

±1025

±1280

10.0 V

9.99 V

5.0 V

2.5 V

1.25 V

0.625 V

9.8 mV

0 V

± 9.8 mV

± 0.625 V

± 1.25 V

± 2.5 V

± 5.0 V

± 10.0 V

±10.0098V ±12.5 V

20.0mA

19.98mA

10.0mA

5.0mA

2.5mA

1.25mA

19.5mA

0 mA

0 mA

0 mA

0 mA

0 mA

0 mA

0 mA

0mA 0 mA

5.0V 20.0 mA 4.995 V 19.98 mA

3.0V 12.0 mA

2.0 V

8.0 mA

1.5 V

6.0 mA

1.25V 5.0 mA 1.004 V 4.016 mA

1.0V 4.0 mA 0.996 V 3.984 mA

0.75 V

3.0 mA

0.5 V

2.0 mA

0 V

0 mA

± 1 V

0 mA

± 3.0 V

0 mA

 

± 3.004V0 mA

± 5.0 V

0 mA

 

 

0

1

0

0

0

0

0

0

0

0

0

0

 

0

0

1

1

1

1

1

1

1

1

1

1

 

0

0

1

0

0

0

0

0

0

0

0

0

 

0

0

0

1

0

0

0

0

0

0

0

0

 

0

0

0

0

1

0

0

0

0

0

0

0

 

0

0

0

0

0

1

0

0

0

0

0

0

 

0

0

0

0

0

0

0

0

0

0

0

1

Rated Range

0

0

0

0

0

0

0

0

0

0

0

0

 

1

1

1

1

1

1

1

1

1

1

1

1

 

1

1

1

1

1

1

0

0

0

0

0

0

 

1

1

1

1

1

0

0

0

0

0

0

0

 

1

1

1

1

0

0

0

0

0

0

0

0

 

1

1

1

0

0

0

0

0

0

0

0

0

 

1

1

0

0

0

0

0

0

0

0

0

0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

0

1

1

1

1

1

1

1

1

1

1

Overrange

1

0

1

1

0

0

0

0

0

0

0

0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

System Manual

9-111

C79000-G8576-C199-06

Page 493
Image 493
Siemens S5-135U/155U appendix Digital Measured-Value Representation as Twos Complement