Siemens S5-135U/155U appendix Measuring Range 20 mA, 0-5 V Unipolar

Analog Input/Output Modules

Shown in the following tables is the representation of the measured value as a function of the selected measuring range.

Measuring Range

0-20 mA, 0-5 V and

0-10 V; Unipolar

Units

4095

4094

:

0001

0000

Measured

Value in V

(0 - 5 V)

4.9988

4.9976

:

0.0012

0.0000

Measured	Measured
Value in V	Value in V
(0 - 10 V)	(0 - 20 mA)
9.9976	19.9951
9.9951	19.9902
:	:
0.0024	0.00488
0.0000	0.00000

			Byte 0 *									Byte 1 *
7	6	5	4	3	2	1	0		6	5	4	3	2	1	0
								7
212 211 210			29 28		27 26 25			24 23 22 21 20 A						E	O
0	1	1	1	1	1	1	1	1	1	1	1	1	0	0	1
0	1	1	1	1	1	1	1	1	1	1	1	0	0	0	0
			:									:
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	0	1

*Same representation for the data formats:

two's complement, value and sign, binary representation.

A = Active bit

E = Error bit

O = Overflow bit

Two's

Complement;

Measuring Range

5 V,	20 mA
and	10 V;

Bipolar

Units	Measured
	Value in V
	($5 V)
2047	4.9976
2046	4.9951
:	:
0001	0.0024
0000	0.0000
±0001	±0.0024
:	:
±2047	±4.9976
±2048	±5.0000

Measured	Measured				Byte 0 *									Byte 1 *
Value in V	Value in V	7	6	5	4	3	2	1	0	7	6	5	4	3	2	1	0
($10 V)	($20 mA)
		212 211 210			29 28		27 26 25			24 23 22 21 20 A						E	O
9.9951	19.9902	0	0	1	1	1	1	1	1	1	1	1	1	1	0	0	1
9.9902	19.9804	0	0	1	1	1	1	1	1	1	1	1	1	0	0	0	0
:	:				:									:
0.0049	0.00976	0	0	0	0	0	0	0	0	0	0	0	0	1	0	0	0
0.0000	0.00000	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
±0.0049	±0.00976	1	1	1	1	1	1	1	1	1	1	1	1	1	0	0	0
:	:				:									:
±9.9951	±19.9902	1	1	0	0	0	0	0	0	0	0	0	0	1	0	0	0
±10.000	±20.0000	1	1	0	0	0	0	0	0	0	0	0	0	0	0	0	1

A = Active bit

E = Error bit

O = Overflow bit

9-92	System Manual
	C79000-G8576-C199-06