Siemens Simatic S7-400

Parameters Value range Default
2
Parameter
type
Scope
● Measuring method
Disabled U Static Channel
U Voltage
4DMU Current
(4-wire transducer)
2DMU Current
(2-wire transducer)
R-4L Resistance
(4-conductor connec‐
tion)
R-3L Resistance
(3-conductor connec‐
tion)
RTD-4L Thermal resistance
(linear, 4-wire connec‐
tion)
RTD-3L Thermal resistance (lin‐
ear,
3-conductor connection)
TC-L Thermocouple (linear)
● Measuring range
For information on configurable meas‐
uring ranges of input channels, refer to
the section "Measuring methods and
measuring ranges of SM 431; Ai 16x16
Bit".
±10 V
● Reference temperature
- 273.15 to 327.67
o
C 0,00
o
C Dynamic Module
● Noise suppression
400 Hz; 60 Hz; 50 Hz 50 Hz
● Smoothing
None
Weak
Medium
Strong
None
● Reference junction
None
RTD on Channel 0
Reference temperature value
None
1
If you use the module in ER-1/ER-2, you must set this parameter to "No" because the interrupt lines are not available in
ER-1/ER-2.
2
Only in the CR (central rack) is it possible to start up the analog modules with the default settings.
A point to note about channels for hardware interrupts with the end of scan cycle trigger
You can configure hardware interrupts for the end of scan cycle for one of the 16 channels
because the module can only trigger these interrupts on one channel.
Measured value smoothing
You will find information that is generally applicable to the smoothing of analog values in the
respective section.
Analog modules
5.23 Analog input module SM 431; AI 16 x 16 Bit (6ES7431-7QH00-0AB0)
S7-400 Automation System Module Data
Reference Manual, Ausgabe 11/2016, A5E00850736-08 285