Siemens SIMATIC S7-300 Reference Manual page 211
Programmable logic controllers module data
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Table 4-2
Analog Input Modules: Characteristics at a glance (continued)
Module
AI 8 x 12 bits
Char-
acter-
istics
Number of
8 inputs in 4
inputs
channel groups
Resolution
Adjustable for each
channel group:
•
9 bits+sign
•
12 bits+sign
•
14 bits+sign
Measuring
Adjustable for each
Method
channel group:
•
Voltage
•
Current
•
Resistors
•
Temperature
Selection of
Arbitrary, per
measuring
channel group
range
Programmable
No
diagnostics
Supports
Yes
clocked
operation
Diagnostic
Adjustable
interrupt
Limit value
Adjustable for
monitoring
2 channels
Hardware
Adjustable
interrupt upon
limit violation
Hardware
No
interrupt at end
of cycle
Potential
Galvanic isolation
relationships
to:
•
CPU
•
Load voltage (not
for 2-DMU)
Permitted
2.5 VDC
potential
difference
between the
inputs (ECM)
Special
–
Features
Sign
Sign
2-DMU
2-wire transmitter
Programmable Logic Controllers S7-300 Module Data
A5E00105505-03
SM 331;
SM 331;
AI 8 x RTD
(-7KF02-)
(-7PF00-)
8 inputs in 4
channel groups
Adjustable for each
channel group:
•
15 bits + sign
Adjustable for each
channel group:
•
Resistors
•
Temperature
Arbitrary, per
channel group
Yes
No
Adjustable
Adjustable for
8 channels
Adjustable
Adjustable
Galvanic isolation
to:
•
CPU
75 VDC / 60 VAC
–
SM 331;
AI 8 x TC
(-7PF10-)
8 inputs in 4
2 inputs in 1
channel groups
channel group
Adjustable for each
Adjustable for each
channel group:
channel group:
•
•
15 bits + sign
•
•
Adjustable for each
Adjustable for each
channel group:
channel group:
•
•
Temperature
•
•
•
Arbitrary, per
Arbitrary, per
channel group
channel group
Yes
Yes
No
No
Adjustable
Adjustable
Adjustable for
Adjustable for
8 channels
1 channel
Adjustable
Adjustable
Adjustable
No
Galvanic isolation
Galvanic isolation
to:
to:
•
•
CPU
•
75 VDC / 60 VAC
2.5 VDC
–
Analog Modules
SM 331;
AI 2 x 12 bits
(-7KB02-)
9 bits+sign
12 bits+sign
14 bits+sign
Voltage
Current
Resistors
Temperature
CPU
Load voltage (not
for 2-DMU)
4-5
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