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 Ye s 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