Siemens SIMATIC S7-1500 System Manual page 217

Table 9- 14
Setting options
Local send clock
Using the send clock of the PROFINET interface
[X150]
PROFINET IO interface X150 clock system
Proceed as follows to set the clock system of PROFINET interface X150:
1. Select the PROFINET IO system in the network view of STEP 7.
2. Make the settings for the send clock, etc. under "PROFINET subnet" > "Domain management"
> "Sync domains".
In coupled isochronous mode with other clock systems, the clock system of the PROFINET
interface is always leading.
You can find additional information on configuring isochronous mode on PROFINET IO in the
Isochronous mode (https://support.industry.siemens.com/cs/ww/en/view/109755401)
function manual.
PROFIBUS interface X126 clock system
You must follow the rules below during configuration if you want to operate the PROFIBUS
DP interface in isochronous mode:
Table 9- 15
If ...
A SINAMICS Integrated is configured
The X142 technology I/Os are operated in
isochronous mode
The clock system of the PROFINET IO
interface is coupled with one of the two
clock systems.
SIMATIC Drive Controller
System Manual, 11/2023, A5E46600094-AD
Setting options for "Source of send clock" in the clock system of the technology I/Os
Rules for configuring isochronous mode for PROFIBUS DP interface
9.11 Configuring the clock system
Note
With this setting, you operate the X142 technolo-
gy I/Os as an independent clock system, or as the
leading clock system if you couple the clock sys-
tem of the SINAMICS Integrated.
With this setting, you operate X142 technology
I/Os in isochronous mode coupled with PROFINET
interface X150. The X142 technology I/Os use the
system clock of PROFINET interface X150.
The configured cycle time of the PROFIBUS DP interface
must...
Be equal to or an integer multiple of the configured cycle
time of the SINAMICS Integrated (PROFIdrive Integrated)
Be equal to or an integer multiple of the configured cycle
time of the X142 technology I/Os
Be equal to or an integer multiple of the configured cycle
time of the PROFINET IO interface
Configuring
215