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
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.