Analog Modules
5-3
S7-400, M7-400 Programmable Controllers Module Specifications
A5E00069467-07
5.1
Module Overview
Introduction
The following tables summarize the most important characteristics of the analog
modules. This overview is intended to make it easy to choose the suitable module
for your task.
Table 5-1
Analog Input Modules: Characteristics at a Glance
Module
Characteristics
SM 431;
AI 8
13
Bit
(-1KF00-)
SM 431;
AI 8
14
Bit
(-1KF10-)
SM 431;
AI 8
14
Bit
(-1KF20-)
SM 431;
AI 13
16
Bit
(-0HH0-)
SM 431;
AI 16
16
Bit
(-7QH00-)
SM 431;
AI 8
RTD
16 Bit
(-7KF10-)
SM 431;
AI 8
16
Bit
(-7KF00-)
Number of Inputs
8 AI U-/I
measure-
ment
4 AI for re-
sistance
measure-
ment
8 AI for U/I
measure-
ment
4 AI for re-
sistance/
tempera-
ture mea-
surement
8 AI for U/I
measure-
ment
4 AI for re-
sistance
measure-
ment
16 inputs
16 AI for U/
I/tempera-
ture mea-
surement
8 AI for re-
sistance
measure-
ment
8 inputs
8 inputs
Resolution
13 bits
14 bits
14 bits
13 bits
16 bits
16 bits
16 bits
Measuring Method
Voltage
Current
Resistors
Voltage
Current
Resistors
Tempera-
ture
Voltage
Current
Resistors
Voltage
Current
Voltage
Current
Resistors
Tempera-
ture
Resistors
Voltage
Current
Tempera-
ture
Measuring
Principle
Integrating
Integrating
Instanta-
neous
value en-
coding
Integrating
Integrating
Integrating
Integrating
Programmable
Diagnostics
No
No
No
No
Yes
Yes
Yes
Diagnostic
Interrupt
No
No
No
No
Adjustable
Yes
Yes
Limit value
Monitoring
No
No
No
No
Adjustable
Adjustable
Adjustable
Hardware
Interrupt upon
Limit Violation
No
No
No
No
Adjustable
Adjustable
Adjustable
Hardware
Interrupt at End of
Cycle
No
No
No
No
Adjustable
No
No
Potential
Relationships
Analog section isolated from CPU
Non-
isolated
Analog section isolated from CPU