Configuring Isochronous Nc-Controlled Drives - Siemens SINUMERIK 840D sl Configuration Manual

Configuring networks
4.5 Configuring PROFINET IO with IRT
4.5.4

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 89).
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 86)
● 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 97).
Procedure overview
Step Description
1 Configuring the NCU (Page 90)
2 Configuring PROFINET IO IRT devices (Page 92)
3 Configuring IO modules or drive telegrams (Page 94)
4 Configuring sync domains (Page 97)
5 Compile the configuration and load into the actual hardware (Page 30)
The compiler issues error messages if you use different values for bus cycles. In this case, match the values (Pa-
ge 99).
6 Assigning drive addresses to the NCU machine data (Page 99)
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SINUMERIK STEP 7 Toolbox V14 SP1
Configuration Manual, 05/2017, A5E41846325