Configuration Of Irt With High Performance - Siemens SIMATIC PROFINET Function Manual

5.6.4

Configuration of IRT with high performance

High-end applications with IO communication require excellent performance in IO
processing, for example in the control of wind turbines (converter control).
To use IRT communication with the highest performance in your PROFINET IO system,
enable the option "Make 'high performance' possible".
When you enable the "Make 'high performance' possible" option, this has the following
effects:
● You can set send clocks of 187.5 µs and 125 µs (CPU 1518) or 187.5 (CPU 1517), see
Technical Specifications in the CPU device manuals.
● You can set more bandwidth use for cyclic IO data.
● You can use the option "Allows the use of 'fast forwarding'".
Requirements
● S7-1500 CPU as of firmware version V2.0
Enable the "Make 'high performance' possible" option.
Follow these steps to activate the "Make 'high performance' possible" option:
1. Select the PROFINET IO system in the network view of STEP 7.
2. In the Inspector window, go to "Properties" > "General" > "PROFINET" > "Domain
management" > "Sync domains" > "Name of the sync domain".
3. Enable the "Make 'high performance' possible" option.
Figure 5-59 Activating high performance
PROFINET with STEP 7 V14
Function Manual, 09/2016, A5E03444486-AG
5.6 PROFINET with performance upgrade
Functions
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