Configuring Hardware and Communication Connections STEP 7.pdf

Contents
2.4 Expanding the Central Rack with Expansion Racks ................................. 2-19
2.4.1 Rules for Connecting Expansion Racks (SIMATIC 400)........................... 2-20
2.4.2 Arranging the Expansion Rack (SIMATIC 400)......................................... 2-20
2.4.3 Special Case: When the Central Rack Has More Than One CPU............ 2-20
3 Configuring the Distributed I/O (DP) ............................................................................ 3-1
3.1 Basic Procedure for Configuring a DP Master System ............................... 3-1
3.2 Where Are the DP Slaves in the Hardware Catalog Window?.................... 3-4
3.3 Distributed Reading and Writing of Consistent Data (> 4 Bytes) ................ 3-5
3.4 Configurations for PROFIBUS-DP .............................................................. 3-6
3.4.1 Configuration with 'Simple' (Modular or Compact) DP Slaves
(Data Exchange: Slave Master) ............................................................. 3-6
3.4.2 Configuration with Intelligent DP Slaves
(Data Exchange: I Slave Master) ........................................................... 3-7
3.4.3 Configuration with Intelligent DP Slaves
(Direct Data Exchange: Slave > I Slave)..................................................... 3-8
3.4.4 Configuration with Two DP Master Systems
(Direct Data Exchange: Slave > I Slave)..................................................... 3-9
3.4.5 Configuration with Two DP Master Systems
(Direct Data Exchange: Slave > Master)................................................... 3-10
3.5 How to Configure Distributed I/O Systems................................................ 3-11
3.5.1 Creating a DP Master System................................................................... 3-11
3.5.2 Handling DP Master Systems and DP Interfaces...................................... 3-12
3.5.3 Selecting and Arranging DP Slaves .......................................................... 3-13
3.5.4 Copying Multiple DP Slaves ...................................................................... 3-13
3.5.5 Configuring Compact DP Slaves............................................................... 3-14
3.5.6 Configuring Modular DP Slaves ................................................................ 3-14
3.5.7 Assigning DP Slaves to SYNC or FREEZE Groups.................................. 3-15
3.6 Other DP Slave Configurations ................................................................. 3-17
3.6.1 ET 200L and DP/AS-i Link......................................................................... 3-17
3.6.2 ET 200S..................................................................................................... 3-17
3.6.3 ET 200S with Option Handling .................................................................. 3-20
3.6.4 ET 200S in DPV1 Mode ............................................................................ 3-22
3.6.5 ET 200iS.................................................................................................... 3-23
3.6.6 PROFIBUS PA........................................................................................... 3-25
3.6.7 HART Modules .......................................................................................... 3-26
3.6.8 Configuring Software Redundancy............................................................ 3-26
3.7 Intelligent DP Slaves ................................................................................. 3-30
3.7.1 Configuring Intelligent DP Slaves.............................................................. 3-30
3.7.2 Example of Configuring an S7-400 as I-Slave .......................................... 3-35
3.7.3 Creating an Alarm in the I Slave with SFB75 'SALRM.............................. 3-42
3.8 Direct Data Exchange (Lateral Communication)....................................... 3-45
3.8.1 Configuring Direct Data Exchange between PROFIBUS-DP Nodes ........ 3-45
3.8.2 Example of Configuring Direct Data Exchange......................................... 3-47
3.8.3 Configuring a DP-Slave (GSD Rev. 5) as a Receiver for
Direct Data Exchange................................................................................ 3-50
3.9 Working with *.GSD Files .......................................................................... 3-53
3.9.1 Installing a *.GSD File ............................................................................... 3-53
3.9.2 What You Should Know About GSD Revisions......................................... 3-55
3.9.3 What You Should Know about GSD Files for PROFINET IO Devices...... 3-57
3.10 DPV1 ......................................................................................................... 3-58
3.10.1 What You Should Know About PROFIBUS DPV1 .................................... 3-58
3.10.2 Configuring DPV1 Devices........................................................................ 3-59
3.10.3 Programming DPV1 Devices..................................................................... 3-61
3.10.4 The Slot Model of DPV1 Slaves with I-Slaves........................................... 3-65
Configuring Hardware and Communication Connections with STEP 7
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