Siemens M7-400 Benutzerhandbuch

5-83

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 5.19.2 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 5-51 Parameters of the SM 431; AI 8 

 

 14 Bit 

Diagnostics

•

Wire break

Yes/no

No

Static

Channel

Measurement

•

Measuring type

Disabled
U

Voltage

4DMU

Current (four-wire transmitter)

2DMU

Current (two-wire transmitter)

R-4L

Resistance (four-conductor 
terminal)

R-3L

Resistance (three-conductor 
terminal)

RTD-4L Thermal resistor

(linear, four-conductor terminal)

RTD-3L Thermal resistor

(linear, three-conductor 
terminal)

TC-L

Thermocouple (linear)

U

Static

Channel

•

Measuring
range

Refer to Section 5.19.2 for the
measuring ranges of the input channels
that you can set.

"

 10 V

•

Reference
Temperature

– 273.15 to 327.67 

o

C

0,00 

o

C

Dynamic

Module