Note
Differences for devices based on device description files (DDF)
A description of the functionality is also contained in the "Information" section for DDF devices.
The following differences, however, exist for the configuring:
● GSD devices are not contained in the same folder as standard devices in the hardware
catalog. The SINAMICS S120/S150 CU320-2, for example, are not found under "Field
devices", but rather under "Further field devices > PROFINET IO > Drives > Siemens AG >
SINAMICS".
● To insert modules or submodules for a GSD device, you must use the device overview
rather than the device view.
5.5.4 Configuring isochronous NC-controlled drives
The procedure for configuring isochronous NC-controlled drives is described below.
If,
instead, you want to operate drives isochronously via the PLC, proceed as for a CPU S7-300.
(Use the OB61 as isochronous alarm OB or the TPA1 as process image, and do not enter the
drive addresses in the machine data.)
If, rather than NC-controlled drives, you want to configure I/O used by NC isochronously,
proceed as described in the associated section (Page 102).
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.
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 overview
Step Description
1 Configuring the NCU (Page 103)
2 Configuring PROFINET IO IRT devices (Page 104)
3 Configuring IO modules or drive telegrams (Page 106)
Configuring networks
5.5 Configuring PROFINET IO with IRT
SINUMERIK STEP 7 Toolbox V15.1
Configuration Manual, 12/2018, A5E46279635B AA 101
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