Siemens Simatic S7-400 User Manual Page 290

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Analog Modules
5-74
S7-400, M7-400 Programmable Controllers Module Specifications
A5E00069467-07
Status, Interrupts, Diagnostics
Interrupts None
Diagnostic functions None
Substitute value can be applied No
Data for Selecting a Sensor
Input range (rated values)/input
resistance
Voltage " 1 V/200 k
" 10 V/200 k
1 V to 5 V/200 k
Current " 20 mA/80
4 mA to 20 mA/80
Resistors 0 to 600 ; of use up
to 500
Maximum input current for
current input (destruction limit)
40 mA continuous
Connection of the signal
sensors
For measuring voltage Possible
For measuring current
As two-wire
transmitter
Possible; with external
transmitter supply
As four-wire
transmitter
Possible
For measuring resistance
With two-conductor
terminal
With three-conductor
terminal
Possible; cable
resistance is also
measured
With four-conductor
terminal
Possible
Characteristic linearization No
5.18.1 Commissioning the SM 431; AI 8 13 Bit
You set the mode of operation of the SM 431; AI 8 13 Bit in STEP 7.
Parameters
You will find a description of the general procedure for assigning parameters to
analog modules in Section 5.7.
An overview of the parameters that you can set and their default settings are
shown in the table below.
Table 5-48 Parameters of the SM 431; AI 8 13 Bit
Parameter
Value Range Default
1)
Parameter
Type
Scope
Measurement
Measuring
method
Disabled
U Voltage
4DMU Current (4-wire transmitter)
2DMU Current (2-wire transmitter)
R-4L Resistance (four-conductor
connection)
U
Static Channel
Measuring
range
Refer to Section 5.18.2 for the measuring
ranges of the input channels that you can
set.
"10 V
Interference
suppression
60 Hz; 50 Hz 50 Hz
1)
Only in the CC (central controller) is it possible to start up the analog modules with the default settings.
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