Siemens Simatic S7-400 - Manual (Page 356)

Analog Modules
5-140
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 5-77 Measuring Ranges of the SM 431; AI 8 x 16 Bit
Method Selected Measuring Range Description
U: Voltage " 25 mV
" 50 mV
" 80 mV
"
100 mV
" 250 mV
"
500 mV
" 1 V
" 2.5 V
" 5 V
" 10 V
1 to 5 V
You will find the digitized analog
values in Section 5.3.1 in the
voltage measuring range
4DMU: Current (four-wire
transmitter) " 3.2 mA
"
5 mA
" 10 mA
" 20 mA
0 to 20 mA
4 to 20 mA
You will find the digitized analog
values in Section 5.3.1 in the
current measuring range
TC-L: Thermocouple (linear)
(temperature measurement) Type B
Type N
Type E
Type R
Type S
Type J
Type L
Type T
Type K
Type U
You will find the digitized analog
values in Section 5.3.1 in the
temperature range
Default Settings
The default settings of the module in STEP 7 are “Thermocouple (linear)” for the
measuring method and “Type J” for the measuring range. You can use this
combination of measuring method and measuring range without parameterizing the
SM 431; AI 8
16 Bit in STEP 7.