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Siemens Simatic S7-400 User Manual

Page 292

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Analog Modules

5-76

S7-400, M7-400 Programmable Controllers Module Specifications

A5E00069467-07

Measuring Ranges

You set the measuring ranges by means of the “Measuring Range” parameter in
STEP 7.

Table 5-50 Measuring Ranges of the SM 431; AI 8 x 13 Bit

Method Selected

Measuring

Range

Description

U: Voltage

±(

1 V

1 to 5 V

±(

10 V

You will find the digitized analog values in
Section 5.3.1 in the voltage measuring
range

2DMU: Current (two-wire
transmitter)

4 to 20 mA

You will find the digitized analog values in
Section 5.3.1 in the current measuring
range

4DMU: Current
(four-wire transmitter)

4 to 20 mA

"

20 mA

You will find the digitized analog values in
Section 5.3.1 in the current measuring
range

R-4L: Resistance
(four-conductor
connection)

600

W

You will find the digitized analog values in
Section 5.3.1 in the resistance measuring
range

Default Settings

The default settings of the module are “Voltage” for the measuring method and

"

10 V” for the measuring range. You can use this combination of measuring

method and measuring range without parameterizing the SM 431; AI 8

13 Bit in

STEP 7.

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