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
5-14 Manual, 08/2006, A5E00105505-04
Representation of the analog values of thermocouples type J
Table 5-25 Representation of the analog values of thermocouples type J
Units Units Units
Type J in
°C
dec hexa-
decimal
Type J in °F
dec hexa-
decimal
Type J in K
dec hexa-
decimal
Range
> 1450.0 32767 7FFF
H
> 2642.0 32767 7FFF
H
> 1723.2 32767 7FFF
H
Overflow
1450.0
:
1201.0
14500
:
12010
38A4
H
:
2EEA
H
2642.0
:
2193.8
26420
:
21938
6734
H
:
55B2
H
1723.2
:
1474.2
17232
:
14742
4350
H
:
3996
H
Overshoot
range
1200.0
:
-210.0
12000
:
-2100
2EE0
H
:
F7CC
H
2192.0
:
-346.0
21920
:
-3460
55A0
H
:
F27C
H
1473.2
:
63.2
14732
:
632
398C
H
:
0278
H
Nominal range
< -210.0 < -2100 <F7CC
H
< -346.0 < -3460 <F27C
H
< 63.2 < 632 < 0278
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 ...
... F31C
H
, and to output 8000
H
. ... EA0C
H
, and to output 8000
H
. ... FDC8
H
, and to output 8000
H
.
Representation of the analog values of thermocouples type K
Table 5-26 Representation of the analog values of thermocouples type K
Units Units Units
Type K in
°C
dec hexa-
decimal
Type K in
°F
dec hexa-
decimal
Type K in K
dec hexa-
decimal
Range
> 1622.0 32767 7FFF
H
> 2951.6 32767 7FFF
H
> 1895.2 32767 7FFF
H
Overflow
1622.0
:
1373.0
16220
:
13730
3F5C
H
:
35A2
H
2951.6
:
2503.4
29516
:
25034
734C
H
:
61CA
H
1895.2
:
1646.2
18952
:
16462
4A08
H
:
404E
H
Overshoot
range
1372.0
:
-270.0
13720
:
-2700
3598
H
:
F574
H
2501.6
:
-454.0
25061
:
-4540
61B8
H
:
EE44
H
1645.2
:
0
16452
:
0
4044
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
. ... E5D4
H
, and to output 8000
H
. ... FB70
H
, and to output 8000
H
.