Siemens Simatic S7-300 - Page 211

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