Siemens Simatic S7-400 - Manual (Page 219)

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