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1 module overview, Introduction – Siemens Simatic S7-400 User Manual

Page 219

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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

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