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
5-16 Manual, 08/2006, A5E00105505-04
Representation of the analog values of thermocouples type R, S
Table 5-29 Representation of the analog values of thermocouples type R, S
Units Units Units
Type R, S in
°C
dec hexa-
decimal
Type R, S
in °F
dec hexa-
decimal
Types R, S
in K
dec hexa-
decimal
Range
> 2019.0 32767 7FFF
H
> 3276.6 32767 7FFF
H
> 2292.2 32767 7FFF
H
Overflow
2019.0
:
1770.0
20190
:
17770
4EDE
H
:
4524
H
3276.6
:
3218.0
32766
:
32180
7FFE
H
:
7DB4
H
2292.2
:
2043.2
22922
:
20432
598A
H
:
4FD0
H
Overshoot
range
1769.0
:
-50.0
17690
:
-500
451A
H
:
FE0C
H
3216.2
:
-58.0
32162
:
-580
7DA2
H
:
FDBC
H
2042.2
:
223.2
20422
:
2232
4FC6
H
:
08B8
H
Nominal
range
-51.0
:
-170.0
-510
:
-1700
FE02
H
:
F95C
H
-59.8
:
-274.0
-598
:
-2740
FDAA
H
:
F54C
H
222.2
:
103.2
2222
:
1032
08AE
H
:
0408
H
Underflow
range
< -170.0 -32768 8000
H
< -274.0 -32768 8000
H
< 103-2 < 1032 8000
H
Underflow
Representation of the analog values of thermocouples type T
Table 5-30 Representation of the analog values of thermocouples type T
Units Units Units
Type T in
°C
dec hexa-
decimal
Type T in °F
dec hexa-
decimal
Type T in K
dec hexa-
decimal
Range
> 540.0 32767 7FFF
H
> 1004.0 32767 7FFF
H
> 813.2 32767 7FFF
H
Overflow
540.0
:
401.0
5400
:
4010
1518
H
:
0FAA
H
1004.0 10040 2738
H
813.2 8132 1FC4
H
Overshoot
range
400.0
:
-270.0
4000
:
-2700
0FA0
H
:
F574
H
752.0
:
-454.0
7520
:
-4540
1D60
H
:
EE44
H
673.2
:
3.2
6732
:
32
1AAC
H
:
0020
H
Nominal
range
< -270.0 < -2700 < F574
H
< -454.0 < -4540 <EE44
H
< 3.2 < 32 < 0020
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
.
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