Siemens SIMATIC S5-115U User Manual page 350

Analog Value Processing
Representation of Measured Value for the New PT100 Climatic Measuring Range of the 460-
7LA13 AI
Table 10.24 Representation of Digitized Measured Values for the PT100
Units PT100/ °C
ohm
>4095 140
+4095 139.99 103.74
+2049 120.01 51.61
+2048 120 51.580
+1 100.01 0.026
0 100 0
-1 99.99 -0.026
-2048 80 -50.780
-2049 79.99 -50.81
-4095 60.01 -100.60
<-4095 60
-4095 x
-4095 x
T: Active F: Error bit OV: Overflow X: Any
1) Only with wire break detection activated
Error bit = 1 only in case of faulty channel;
In case of transducer break overflow bit = 1 for all channels
2) Through the PT100 series connection, this bit combination is set for all channels in the case of a break in the supply
circuit.
10-46
Climatic Measuring Range of the 460-7LA13 AI
mV at mV com-
PT100 pensated 15 14 13 12 11 10 9 8 7 6 5 4 3
350 100 0
349.976 99.976 0
300.024 50.024 0
300 50 0
250.024 0.024 0
250 0 0
249.976 -0.024 1
200 -50 1
199.976 -50.024 1
150.024 -99.976 1
150 -100 1
Wire break
x 0 -250 1
x 0 -250 1
Digitized Measured Value
1 1 1 1 1 1 1 1 1 1 1 1 0 0 1 Overflow
1 1 1 1 1 1 1 1 1 1 1 1
1 0 0 0 0 0 0 0 0 0 0 1
1 0 0 0 0 0 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 1 1 1 1 1 1
1 0 0 0 0 0 0 0 0 0 0 0
0 1 1 1 1 1 1 1 1 1 1 1
0 0 0 0 0 0 0 0 0 0 0 1
0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 Overflow
0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 Wire break
0 0 0 0 0 0 0 0 0 0 0 1 0 1 1 Wire break
S5-115U Manual
T F OV Range
2 1 0
Overrange
0 0 0
0 0 0
Nominal
0 0 0
range
0 0 0
0 0 0
0 0 0
0 0 0
Overrange
0 0 0
0 0 0
2)
I /I
C+ c-
transducer
measuring
1)
circuit
EWA 4NEB 811 6130-02b