Siemens SIMATIC PROFINET with STEP 7 V13 Manuel des fonctions - Page 6
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Table of contents
4.6
Extended maintenance concept............................................................................................. 82
4.7
Diagnostics of the network topology ...................................................................................... 84
4.8
Diagnostics in the user program ............................................................................................ 85
4.8.1
Diagnostics and configuration data records ........................................................................... 85
4.8.2
Evaluate diagnostics in the user program .............................................................................. 87
5
Functions .............................................................................................................................................. 89
5.1
Connecting other bus systems ............................................................................................... 90
5.1.1
Connecting other bus systems ............................................................................................... 90
5.1.2
Linking PROFINET and PROFIBUS ...................................................................................... 91
5.1.3
Connect the DP slave via the IE/PB Link to a PROFINET IO system ................................... 93
5.2
Intelligent IO devices (I-devices) ............................................................................................ 95
5.2.1
I-device functionality .............................................................................................................. 95
5.2.2
Properties and Advantages of the I-Device ........................................................................... 96
5.2.3
Characteristics of an I-Device ................................................................................................ 97
5.2.4
Data Exchange between higher- and lower-level IO system ............................................... 101
5.2.5
Configuring the I-device ....................................................................................................... 103
5.2.6
Program examples ............................................................................................................... 106
5.2.7
Diagnostics and interrupt characteristics ............................................................................. 110
5.2.8
Rules for the Topology of a PROFINET IO System with I-Device ....................................... 113
5.2.9
Boundary conditions when using I-devices .......................................................................... 116
5.2.10
Configuring PROFIenergy with I-devices ............................................................................. 117
5.3
Shared device ...................................................................................................................... 119
5.3.1
Useful information on shared devices .................................................................................. 119
5.3.2
Configuring a shared device (GSD configuration) ............................................................... 123
5.3.3
Configuring an I-device as a shared device ......................................................................... 127
5.3.4
Module-internal shared input/shared output (MSI/MSO) ..................................................... 137
5.4
Media redundancy (ring topologies) .................................................................................... 145
5.4.1
Media Redundancy Protocol (MRP) .................................................................................... 147
5.4.2
Configuring media redundancy ............................................................................................ 150
5.5
Real-time communication .................................................................................................... 153
5.5.1
Introduction .......................................................................................................................... 153
5.5.2
RT ........................................................................................................................................ 154
5.5.3
IRT ....................................................................................................................................... 155
5.5.4
Comparison of RT and IRT .................................................................................................. 158
5.5.5
Configuring PROFINET IO with IRT .................................................................................... 158
5.5.6
Setup recommendations for optimizing PROFINET ............................................................ 162
5.6
Isochronous mode ............................................................................................................... 164
5.6.1
What is isochronous mode? ................................................................................................. 164
5.6.2
Use of isochronous mode .................................................................................................... 165
5.6.3
Isochronous applications ..................................................................................................... 166
5.6.4
Time sequence of synchronization ...................................................................................... 167
Basics of Programming ........................................................................................................ 168
5.6.5
5.6.6
Program processing according to the IPO model with application cycle = 1 ....................... 169
5.6.7
Program execution according to the IPO model with application cycle > 1 ......................... 170
5.6.8
Configuring isochronous mode ............................................................................................ 171
5.6.9
Setting the application cycle and delay time ........................................................................ 174
6
PROFINET with STEP 7 V13
Function Manual, 12/2014, A5E03444486-AF