Siemens S7-400 ユーザーズマニュアル

5-94

S7-400, M7-400 Programmable Controllers Module Specifications

A5E00069467-07

  

You set the mode of operation of the SM 431; AI 8 

 

 14 Bit by means of

measuring range modules on the module and in STEP 7.

A measuring range module of the module matches two channels and one
resistance channel to each type of sensor. If necessary, the measuring range
modules must be replugged to change the measuring method and the measuring
range. The steps you have to perform to do this are described in detail in
Section 5.4.

The corresponding table in Section 5.20.2 tells you which assignment you have to
select for which measuring method and measuring range. In addition, the
necessary settings are embossed on the module.

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 5-56 Parameters of the SM 431; AI 8 

 

 14 Bit (6ES7431-1KF20-0AB0) 

Measurement

•

Measuring type

Disabled
U

Voltage

4DMU

Current (four-wire transmitter)

2DMU

Current (two-wire transmitter)

R-4L

Resistance (four-conductor 
terminal)

U

Static

Channel

•

Measuring
range

Refer to Section 5.20.2 for the
measuring ranges of the input channels
that you can set.

"

10 V

•

Interference
suppression

400 Hz; 60 Hz; 50 Hz; none

50 Hz

•

Smoothing

None
High

None

Only in the CC (central controller) is it possible to start up the analog modules with the default settings.