Table of contents
PROFINET with STEP 7
Function Manual, 05/2021, A5E03444486-AL
11
5.5
Real-time communication ................................................................................................ 192
5.5.1
Introduction .................................................................................................................... 192
5.5.2
RT .................................................................................................................................... 193
5.5.3
IRT ................................................................................................................................... 194
5.5.4
Comparison of RT and IRT ................................................................................................ 197
5.5.5
Configuring PROFINET IO with IRT .................................................................................... 197
5.5.6
Setting the bandwidth usage for the send clock ............................................................... 200
5.5.7
Setup recommendations for optimizing PROFINET ............................................................ 202
5.5.8
Limitation of the data infeed into the network .................................................................. 206
5.6
PROFINET with performance upgrade ............................................................................... 207
5.6.1
Dynamic frame packing ................................................................................................... 208
5.6.2
Fragmentation ................................................................................................................. 210
5.6.3
Fast forwarding ............................................................................................................... 211
5.6.4
Configuration of IRT with high performance ..................................................................... 212
5.6.5
Sample configuration for IRT with high performance ........................................................ 216
5.7
Isochronous mode ........................................................................................................... 217
5.7.1
What is isochronous mode? .............................................................................................. 217
5.7.2
Use of isochronous mode ................................................................................................. 218
5.7.3
Time sequence of synchronization on PROFINET IO........................................................... 220
5.7.4
Configuring isochronous mode ........................................................................................ 221
5.7.4.1
Introduction .................................................................................................................... 221
5.7.4.2
Configuring isochronous mode on PROFINET IO ............................................................... 223
5.7.4.3
Setting the application cycle and delay time ..................................................................... 225
5.7.5
Programming isochronous mode ..................................................................................... 226
5.7.5.1
Basics of Programming ..................................................................................................... 226
5.7.5.2
Program execution according to the IPO model ................................................................ 227
5.7.5.3
Program execution according to the OIP model ................................................................ 229
5.8
Direct data exchange ....................................................................................................... 231
5.8.1
Introduction .................................................................................................................... 231
5.8.2
Configuring direct data exchange between two S7-1500 CPUs ......................................... 234
5.8.3
Configuring direct data exchange between multiple IO controllers.................................... 237
5.9
Device replacement without exchangeable medium ......................................................... 241
5.9.1
Device replacement without exchangeable medium/PG function ...................................... 242
5.9.2
Replacing an IO device without exchangeable medium ..................................................... 244
5.9.3
Permit overwriting of PROFINET device name ................................................................... 245
5.10
Standard machine projects ............................................................................................... 248
5.10.1
Multiple use IO systems ................................................................................................... 249
5.10.1.1
What you should know about multiple use IO systems ...................................................... 249
5.10.1.2
Configuring multiple use IO systems ................................................................................ 253
5.10.1.3
Adapt multiple use IO systems locally ............................................................................... 256
5.10.2
Configuration control for IO systems ................................................................................ 258
5.10.2.1
Information about configuration control of IO systems ..................................................... 258
5.10.2.2
Configuring IO devices as optional ................................................................................... 261
5.10.2.3
Enabling optional IO devices in the program ..................................................................... 263
5.10.2.4
Configuring flexible order of IO devices ............................................................................ 270
5.10.2.5
Customizing arrangement of IO devices in the program .................................................... 272
5.10.2.6
System behavior and rules ............................................................................................... 275
5.11
Saving energy with PROFIenergy ...................................................................................... 277
Summary of Contents for SIMATIC ET 200AL
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