Analog modules
6.5 Analog input module SM 331; AI 8 x 14 Bit High Speed; synchronous; (6ES7331-7HF0x-0AB0)
S7-300 Automation System Module data
Manual, 08/2006, A5E00105505-04
6-33
6.5.1 Measuring methods and ranges
Introduction
The analog input module has measuring range modules. Use the measuring range module
and the "measuring range" parameter in
STEP 7
to set the measuring method and
measuring ranges.
The "voltage" measuring method and the "" 10 V" measuring range of the module are set by
default in
STEP 7
. You can use those default settings without having to program the
SM 331; AI 8 x 14 Bit High Speed in
STEP 7
.
Measuring range modules
Reposition the measuring range modules to suit the measuring method and range. See table
Setting measuring methods and ranges of analog input channels
.
Measuring methods and ranges
Table 6-13 Measuring methods and ranges
Selected measuring method Measuring range
(type of sensor)
Measuring range module
settings
± 1 V A V: Voltage
± 5 V
1 V to 5 V
± 10 V
B
4DMU: Current (4-wire transducer) 0 mA to 20 mA
4 mA to 20 mA
± 20 mA
C
2DMU: Current (2-wire transducer) 4 mA to 20 mA D
Channel groups
The channels of SM 331; AI 8 x 14 Bit High Speed are arranged in four groups of two
channels. You always assign parameters to a channel group.
SM 331; AI 8 x 14 bits High Speed is equipped with one measuring range module per
channel group.
The table below shows the relevant configuration of channel groups. You will need the
channel group number to set the SFC parameters in the user program.
Table 6-14 Assignment of SM 331; AI 8 x 14 bits High Speed channels to channel groups
Channels ... ... form one channel group each
Channel 0
Channel 1
Channel group 0
Channel 2
Channel 3
Channel group 1
Channel 4
Channel 5
Channel group 2
Channel 6
Channel 7
Channel group 3
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