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Measuring Methods And Measuring Ranges Of Sm 431; Ai 8 X 16 Bit - Siemens SIMATIC S7-400 Reference Manual

Automation system module data
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5.25.3

Measuring methods and measuring ranges of SM 431; AI 8 x 16 Bit

Measuring methods
You can set the measuring method at the input channels:
● Voltage measurement
● Current measurement
● Temperature measurement
You perform the setting with the "measuring method" parameter in STEP 7.
Unused channels
For unused channels, set the "measuring method" parameter to "deactivated". This reduces
the module's cycle time.
Measuring ranges
Set the measuring ranges by means of the "Measuring range" parameter in STEP 7.
Table 5-74
Measuring ranges of the SM 431; AI 8 x 16 Bit
Selected measuring method
V: Voltage
4DMU: Current (4-wire sensor)
TC-L: Thermocouple (linear)
(Temperature measurement)
S7-400 Automation System Module Data
Reference Manual, Ausgabe 11/2016, A5E00850736-08
5.25 Analog input module SM 431; AI 8 x 16 Bit (6ES7431-7KF00-0AB0)
Measuring range
±25 mV
±50 mV
±80 mV
±100 mV
±250 mV
±500 mV
±1 V
±2.5 V
±5 V
±10 V
from 1 to 5 V
±3.2 mA
±5 mA
±10 mA
±20 mA
from 0 to 20 mA
from 4 to 20 mA
Type B
Type N
Type E
Type R
Type S
Type J
Type L
Type T
Type K
Type U
Description
The digitized analog values are listed in the sec‐
tion "Representation of analog values for analog
input channels" in the voltage measuring range.
The digitized analog values are listed in the sec‐
tion "Representation of analog values for analog
input channels" in the current measuring range.
The digitized analog values are listed in the sec‐
tion "Representation of analog values for analog
input channels" in the temperature range.
Analog modules
315

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