Table Of Contents - Siemens SIMATIC S7-400 Manual

Table of contents

1 Introduction............................................................................................................................................. 1-1
2 Structure of a CPU 41x........................................................................................................................... 2-1
2.1 Control and display elements of the CPUs ................................................................................ 2-1
2.2 Monitoring functions of the CPU ................................................................................................ 2-5
2.3 Status and error displays ........................................................................................................... 2-8
2.4 Mode selector switch ............................................................................................................... 2-11
2.5 Running a memory reset.......................................................................................................... 2-13
2.6 Cold start / Warm restart / Hot restart...................................................................................... 2-15
2.7 Structure and Functions of the Memory Cards ........................................................................ 2-17
2.8 Use of the Memory Cards ........................................................................................................ 2-20
2.9 Multipoint Interface (MPI)......................................................................................................... 2-22
2.10 PROFIBUS DP Interface.......................................................................................................... 2-24
2.11 PROFINET (PN) interface........................................................................................................ 2-25
2.12 Overview of the parameters for the S7-400 CPUs .................................................................. 2-26
3 Special functions of a CPU 41x .............................................................................................................. 3-1
3.1 Web Server ................................................................................................................................ 3-1
3.2 Multicomputing ........................................................................................................................... 3-3
3.2.1 Fundamentals ............................................................................................................................ 3-3
3.2.2 Special Features at Multicomputing........................................................................................... 3-5
3.2.3 Multicomputing interrupt............................................................................................................. 3-6
3.2.4 Configuring and programming multicomputing mode ................................................................ 3-6
3.3 System modifications during operation...................................................................................... 3-7
3.3.1 Basics......................................................................................................................................... 3-7
3.3.2 Hardware requirements ............................................................................................................. 3-8
3.3.3 Software requirements............................................................................................................. 3-10
3.3.4 Permitted system modifications ............................................................................................... 3-11
3.4 Resetting the CPU to the factory state .................................................................................... 3-12
3.5 Updating firmware online ......................................................................................................... 3-14
3.6 Reading out service data ......................................................................................................... 3-15
S7-400 Automation System, CPU Specifications
Manual, 10/2006, 6ES7498-8AA04-8BA0
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