7. In the "Ti/To values" dropdown list, select "From the OB".
This causes the value to be taken automatically from the setting of the isochronous alarm
OB "NCK".
8. Activate the isochronous mode individually for the desired modules of the device in the
"Detail overview" table.
Figure 5-4 Settings for the isochronous mode using the example of a SINAMICS S120/S150 CU320-2
5.5.8 Configuring IO modules or drive telegrams
The isochronous-conform modules (e.g. input/output modules, DO or telegrams) to be
configured must be selected individually in order to make the desired settings in the
"Properties" inspector window. You can select these modules in the device view or device
overview (in the case of GSD-based devices, only in the device overview).
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)
● The device or the rack is configured.
See also Configuring PROFINET IO IRT devices (Page 104)
Configuring networks
5.5 Configuring PROFINET IO with IRT
SINUMERIK STEP 7 Toolbox V15.1
106 Configuration Manual, 12/2018, A5E46279635B AA
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