Analog Modules
5-20 S7-400, M7-400 Programmable Controllers Module Specifications
A5E00069467-07
Analog Value Representation for Thermocouple Type L

Table 5-26 Analog Value Representation for Thermocouple Type L

Type L
Units
Type L
Units
Type L
Units
Type L
in 5CDecimal Hexa-
decimal
Type L
in 5FDeci-
mal Hexa-
deci-
mal
Type L
in K Deci-
mal Hexa-
decimal Range
> 1150.0 32767 7FFFH> 2102.0 32767 7FFFH> 1423.2 32767 7FFFHOverflow
1150.0
:
901.0
11500
:
9010
2CECH
:
2332H
2102.0
:
1653.8
21020
:
16538
521CH
:
409AH
1423.2
:
1174.2
14232
:
11742
3798H
:
2DDEH
Overrange
900.0
:
–200.0
9000
:
–2000
2328H
:
F830H
1652.0
:
–328.0
16520
:
–3280
4088H
:
F330H
1173.2
:
73.2
11732
:
732
2DD4H
:
02DCH
Rated range
< –200.0 < –2000 < F830H< –328.0 <
–3280 <F330H< 73.2 < 732 <02DC
HUnderflow
In the case of incorrect wiring (for example, polarity reversal or open inputs) or of a sensor error in the
negative range (for example, incorrect thermocouple type), the analog input module reports an
underflow...
...if F380H is violated and outputs
8000H
...if EAC0H is violated and
outputs 8000H
...if FE2CH is violated and
outputs 8000H
Analog Value Representation for Thermocouple Type N

Table 5-27 Analog Value Representation for Thermocouple Type N

Type N
Units
Type N
Units
Type N
Units
Type N
in 5CDeci-
mal Hexade-
cimal
Type N
in 5FDeci-
mal Hexa-
deci-
mal
Type N
in K Deci-
mal Hexa-
deci-
mal
Range
> 1550.0 32767 7FFFH> 2822.0 32767 7FFFH> 1823.2 32767 7FFFHOverflow
1550.0
:
1300.1
15500
:
13001
3C8CH
:
32C9H
2822.0
:
2373.8
28220
:
23738
6E3CH
:
5CBAH
1823.2
:
1574.2
18232
:
15742
4738H
:
3D7EH
Overrange
1300.0
:
–270.0
13000
:
–2700
32C8H
:
F574H
2372.0
:
–454.0
23720
:
–4540
5CA8H
:
EE44H
1573.2
:
0
15732
:
0
3D74H
:
0000H
Rated range
< –270.0 <
–2700 < F574H< –454.0 <
–4540 <EE44
H
< 0 < 0 <
0000HUnderflow
In the case of incorrect wiring (for example, polarity reversal or open inputs) or of a sensor error in the
negative range (for example, incorrect thermocouple type), the analog input module reports an
underflow...
...if F0C4H is violated and
outputs 8000H
...if E5D4H is violated and
outputs 8000H
...if FB70H is violated and
outputs 8000H