Siemens S5-135U/155U System Manual page 476

Analog Input/Output Modules
Two's complement; measuring range
Units Measured Measured
Value in V Value in V Value in V Value in V
( 1.25 V) ( 2.5 V)
2047 1.2494 2.4988
2046 1.2488 2.4975
: :
0001 0.0006 0.0012
0000 0.0000 0.0000
–0001 –0.0006 –0.0012
: :
–2047 –1.2494 –2.4988
–2048 –1.2500 –2.5000
A = Active bit
E = Error bit
O = Overflow bit
Value and sign; measuring range
Units Measured Measured
Value in V Value in V Value in V Value in V
( 1.25 V) ( 2.5 V)
2047 1.2494 2.4988
2046 1.2488 2.4975
: :
0001 0.0006 0.0012
0000 0.0000 0.0000
–0001 –0.0006 –0.0012
: :
–2047 –1.2494 –2.4988
–2048 –1.2500 –2.5000
A = Active bit
E = Error bit
O = Overflow bit
Binary; measuring range
Units Measured Measured
Value in V Value in V
( 1.25 V) ( 2.5 V)
4095 1.2494 2.4988
4094 1.2488 2.4975
: :
2049 0.0006 0.0012
2048 0.0000 0.0000
2047 –0.0006 –0.0012
: :
0001 –1.2494 –2.4988
0000 –1.2500 –2.5000
*
A = Active bit
E = Error bit
O = Overflow bit
9-94
Byte 0
7 6 5 4 3
12 11 10 9
2 2 2 2 2
0 0 1 1 1
0 0 1 1 1
: :
0 0 0 0 0
0 0 0 0 0
1 1 1 1 1
: :
1 1 0 0 0
1 1 0 0 0
Byte 0
7 6 5 4 3
12 11 10 9
2 2 2 2 2
0 0 1 1 1
0 0 1 1 1
: :
0 0 0 0 0
0 0 0 0 0
1 0 0 0 0
: :
1 0 1 1 1
1 1 0 0 0
1.25 V and
Byte 0
7 6 5 4 3
12 11 10 9
2 2 2 2 2
0 1 1 1 1
0 1 1 1 1
: :
0 1 0 0 0
0 1 0 0 0
0 0 1 1 1
:
0 0 0 0 0
0 0 0 0 0
Same representation for the data formats:
two's complement, value and sign, binary representation.
1.25 V and 2.5 V; bipolar
2 1 0 7 6 5 4
8 7 6 5 4 3 2
2 2 2 2 2 2 2
1 1 1 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
1 1 1 1 1 1 1
0 0 0 0 0 0 0
0 0 0 0 0 0 0
1.25 V and 2.5 V; bipolar
2 1 0 7 6 5 4
8 7 6 5 4 3 2
2 2 2 2 2 2 2
1 1 1 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 0 0 0 0 0
1 1 1 1 1 1 1
0 0 0 0 0 0 0
2.5 V; bipolar
2 1 0 7 6 5 4
8 7 6 5 4 3 2
2 2 2 2 2 2 2
1 1 1 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
1 1 1 1 1 1 1
0 0 0 0 0 0 0
0 0 0 0 0 0 0
C79000-G8576-C199-06
Byte 1
3 2 1 0
1 0
2 A E O
1 0 0 1
0 0 0 0
:
1 0 0 0
0 0 0 0
1 0 0 0
:
1 0 0 0
0 0 0 1
Byte 1
3 2 1 0
1 0
2 A E O
1 0 0 1
0 0 0 0
:
1 0 0 0
0 0 0 0
0 0 0 0
:
1 0 0 0
0 0 0 1
Byte 1
3 2 1 0
1 0
2 A E
OV
1 0 0 1
0 0 0 0
:
1 0 0 0
0 0 0 0
1 0 0 0
:
1 0 0 0
0 0 0 1
System Manual