Representation of the analog values of analog modules
5.1 Representation of the analog values of analog input channels
S7-300 Automation System Module data
Manual, 08/2006, A5E00105505-04
5-13
Representation of the analog values of thermocouples type C
Table 5-23 Representation of the analog values of thermocouples type C
Units Units
Type C in
°C
dec hexa-
decimal
Type C in
°F
dec hexa-
decimal
Range
> 2500.0 32767 7FFF
H
> 3276.6 32767 7FFF
H
Overflow
2500.0
:
2315.1
25000
:
23151
61A8
H
:
5A6F
H
3276.6
:
2786.6
32766
:
27866
7FFE
H
:
6CDA
H
Overshoot range
2315.0
:
0.0
23150
:
0
5A6E
H
:
0000
H
2786.5
:
32.0
27865
:
320
6CD9
H
:
0140
H
Nominal range
0.1
:
-120.0
-1
:
-1200
FFFF
H
:
FB50
H
31.9
:
-184.0
319
:
-1840
013F
H
:
F8D0
H
Undershoot range
< -120.0 -32768 8000
H
< -184.0 -32768 8000
H
Underflow
Representation of the analog values of thermocouples type E
Table 5-24 Representation of the analog values of thermocouples type E
Units Units Units
Type E in
°C
dec hexa-
decimal
Type E in
°F
dec hexa-
decimal
Type E in K
dec hexa-
decimal
Range
> 1200.0 32767 7FFF
H
> 2192.0 32767 7FFF
H
> 1473.2 32767 7FFF
H
Overflow
1200.0
:
1000.1
12000
:
10001
2EE0
H
:
2711
H
2192.0
:
1833.8
21920
:
18338
55A0
H
:
47A2
H
1473.2
:
1274.2
14732
:
12742
398C
H
:
31C6
H
Overshoot
range
1000.0
:
-270.0
10000
:
-2700
2710
H
:
F574
H
1832.0
:
-454.0
18320
:
-4540
4790
H
:
EE44
H
1273.2
:
0
12732
:
0
31BC
H
:
0000
H
Nominal
range
< -270.0 < -2700 < F574
H
< -454.0 < -4540 <EE44
H
<0 <0 <0000
H
Underflow
Faulty wiring (polarity reversal, or open inputs, for example), or transducer error in the negative range
(wrong type of thermocouple, for example) will cause the analog input module to signal underflow, starting
at ...
... F0C4
H
, and to output 8000
H
. ... FB70
H
, and to output 8000
H
. ... E5D4
H
, and to output 8000
H
.