Configuring Profinet Io Irt Devices - Siemens SINUMERIK 840D sl Configuration Manual

Configuring networks
5.5 Configuring PROFINET IO with IRT
Note
Concurrent operation of devices with and without clock synchronization
When you configure devices that do not participate on the IRT communication, observe
the rules for sync domains for PROFINET IO IRT (Page 110).
Procedure
To configure the NC of the NCU to use isochronous mode, proceed as follows:
1. Select the PLC of the NCU.
2. Select the "Alarms > Isochronous alarms > NCK" entry in the "Properties > General"
inspector window.
3. In the "Distributed I/O" dropdown list, select the PROFINET IO system with which you have
interconnected the PROFINET IO IRT devices (e.g. "PROFINET IO system (100)").
Note
Changing the name and number of the PROFINET IO system
You can specify the name and number of the PROFINET IO system in the settings of the IO
system (bus system on X150). You find the setting under "General" provided IO system is
highlighted in the network view.
If, however, the sync domain or nothing is highlighted, the setting is not available.
To highlight the IO system, position the mouse cursor over the IO system in the network view
and activate the appropriate option box in the displayed tooltip.
4. In the "Application cycle (ms)" dropdown list, select the value that you defined as send clock
of the sync domain and the DP cycle of SINAMICS Integrated, e.g. 2000.
5. Enter "2" in the "TPA" (subprocess image) text field. The setting must match the "process
image" setting on the IO modules.
5.5.7

Configuring PROFINET IO IRT devices

Requirement
● The devices to be configured have been inserted (at least one NCU and one PROFINET IO
IRT-conform device).
● The isochronous-conform modules and submodules to be configured have been inserted in
the PROFINET IO IRT-conform device.
See also Isochronous-capable modules identification (Page 99)
● The PROFINET IO IRT-conform devices are interconnected to the NCU with X150.
● The NCU is configured.
See also Configuring the NCU (Page 103)
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SINUMERIK STEP 7 Toolbox V15.1
Configuration Manual, 12/2018, A5E46279635B AA