Siemens S5-135U/155U System Manual page 409

Measured-Value
Representation in
the Extended Pt
100 Measuring
Range (Two's
Complement)
Units Pt 100/ohms Temperatu
o o
i in C C
>4095 140.0
4095 139.99 103.74
2049 120.01 51.61
2048 120.0 51.58
+1 100.01 0.026
0 100.0 0
–1 99.99 –0.026
–2048 80 –50.78
–2049 79.99 –50.81
–4095 60.01 –100.60
<–4095 60
Broken wire
–4095 Arbitrary Arbitrary 1
–4095 Arbitrary Arbitrary 1
1)
2)
A = Active bit
E = Error bit
OV = Overflow bit
S = Sign
System Manual
C79000-G8576-C199-06
Byte 0
7 6 5 4 3 2 1
11 10 9 8 7 6
S 2 2 2 2 2 2
0 1 1 1 1 1 1
0 1 1 1 1 1 1
0 1 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 0
1 1 1 1 1 1 1
1 1 0 0 0 0 0
1 0 1 1 1 1 1
1 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
Only with broken wire monitor activated, error bit = 1 only for faulty
channel; for sensor broken wire, overflow bit = 1 for all channels
On account of the Pt 100 series circuit, this bit combination always
appears for all channels if the supply line is open-circuit.
Analog Input/Output Modules
Byte 1
0 7 6 5 4 3 2 1 0
5 4 3 2 1 0
OV
2 2 2 2 2 2 A E
1 1 1 1 1 1 0 0 1
1 1 1 1 1 1 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 0 0 0
0 0 0 0 0 0 0 0 0
1 1 1 1 1 1 0 0 0
0 0 0 0 0 0 0 0 0
1 1 1 1 1 1 0 0 0
0 0 0 0 0 1 0 0 0
0 0 0 0 0 1 0 0 1
0 0 0 0 0 1 0 0 1
0 0 0 0 0 1 0 1 1
Overflow
Overrange
Rated range
Overrange
Overflow
Broken wire
2)
Ic+/Ic-
Broken wire
Sensor
Measuring
1)
line
9-27