Siemens SIMATIC S7-300 Reference Manual page 336
Programmable logic controllers module data
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Analog Modules
Table 4-68 Parameters of the SM 331; AI 8 x RTD, continued
Parameter
Measurement
•
Measuring Method
•
Measuring Range
•
Temperature unit
•
Module filtering mode 8 channels hardware filter
•
Temperature
coefficient for
temperature
measurement with
bulb resistor (RTD)
•
Interference
suppression*
•
Smoothing
50/60/400 Hz programmable only for modes 8 or 4-Channel Hardware Filter Modes;
*
50 Hz, 60 Hz or 400 Hz programmable only for mode 8-Channel Hardware Filter Mode
4-130
Value Range
Deactivated
R-4L
Resistance
(four-conductor connection)
R-3L
Resistance,
three-conductor connection
RTD-4L Bulb resistor
(linear, four-conductor
connection)
RTD-3L Bulb resistor
(linear, three-conductor
connection)
Refer to Section 4.23.2 for the
measuring ranges of the input
channels that you can set.
Degrees Celsius; degrees Fahrenheit
8 channels software filter
4 channels hardware filter
Platinum (Pt)
0,003850 W/W/ °C
0.003916 W/W/ °C
0.003902 W/W/ °C
0.003920 W/W/ °C
0,003850 W/W/ °C (ITS-90)
Nickel (Ni)
0.006180 W/W/ °C
0.006720 W/W/ °C
Copper (Cu)
0.00427 W/W/ °C
50/60/400 Hz; 400 Hz; 60 Hz; 50 Hz
None
Low
Average
High
Default
Settings
meter
RTD-4L
Dynamic
Pt 100
climate
0.003850
(IPTS-68)
Degrees
Dynamic
Celsius
8
Dynamic
channels,
hardware
filter
0.003850
Dynamic
50/60/400
Dynamic
Hz
None
Dynamic
Programmable Logic Controllers S7-300 Module Data
Para-
Scope
Type
Channel
group
Module
Module
Channel
group
Channel
group
Channel
group
A5E00105505-03
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