Measuring Ranges Of The Sm 334;Ai 4/Ao 2 X 12 Bits - Siemens SIMATIC S7-300 Reference Manual

Note
Simultaneous connection of a temperature sensor and a resistor to channels 0 and
1 and 2 and 3 is not allowed.
The reason common current source for both channels.
Unused Channels
Set the "measuring method" parameter for unused input channels to "disabled". In
this way you shorten the scan time of the module.
You must short-circuit unused input channels and you should connect them to
M . In this way, you obtain an optimum interference immunity for the analog
ANA
input module.
So that unused output channels of the SM 334; AI 4/AO 2 x 12 bits remain
de-energized, you must set the "output type" parameter to "disabled" and leave the
terminal open.
Measuring ranges
Use STEP 7 for programming the measuring ranges.
Table 4-87 Measuring ranges of the SM 334;AI 4/AO 2 x 12 bits
U: Voltage
R-4L: Resistance (four-conductor
connection)
RTD-4L: Bulb resistor
(linear, four-conductor connection)
(temperature measurement)
Default settings of inputs
The default settings of the module are the "Bulb resistor (linear, four-conductor
connection)" measuring method and the "Pt 100 climate" measuring range. You
can use this combination of measuring method and measuring range without
parameterizing the SM 334; AI 4/AO 2 x 12 bits in STEP 7.
Programmable Logic Controllers S7-300 Module Data
A5E00105505-03
Method Selected Measuring Range
0 to 10 V
10 kW
Pt 100 climate
Analog Modules
Description
You will find the digital
analog values in Section analog values in Section
4.3.1
4-199