
Analog modules
5.4 Representation of analog values
S7-400 Automation System Module Data
Reference Manual, Edition 09/2009, A5E00850736-06
199
Representation of analog values for thermocouple types R, S
Table 5- 28 Representation of analog values for thermocouple types R, S
Type R, S
in °C
Unit
decimal
Unit
hexa-
decimal
Type R, S
in °F
Unit
decimal
Unit
hexa-
decimal
Types R, S
in K
Unit
decimal
Unit
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
Undershoot
range
< -170,0 -32768 8000
H
< -274,0 -32768 8000
H
< 103-2 < 1032 8000
H
Underflow
Representation of analog values for thermocouples type T
Table 5- 29 Representation of analog values for thermocouples type T
Type T in
°C
Unit
decimal
Unit
hexa-
decimal
Type T in °F Unit
decimal
Unit
hexa-
decimal
Type T in K Unit
decimal
Unit
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 sensor 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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