Siemens SIMATIC S7-1500 System Manual page 139

Configuring
7.11 Configuring the clock system
Coupled isochronous mode
In coupled isochronous mode, the relevant clock systems use a shared system clock.
The leading clock system provides its own system clock to the other clock systems.
The following table shows the possible combinations for coupled isochronous mode on the
SIMATIC Drive Controller. The leading clock system for each combination is indicated.
Table 7- 9 Possible combinations for coupled isochronous mode
PROFINET IO interface
X150
X (leading)
X (leading)
X (leading)
-
SINAMICS Integrated is not configured.
1
You configure coupled isochronous mode in STEP 7; see Setting the clock system
(Page 150).
Note
Isochronous coupling of the PROFIBUS interface with other clock systems is not possible.
If you want to expand the drive configuration limits with distributed drive systems, connect
those distributed drive systems over the PROFINET IO interface X150. Only the PROFINET
IO interface X150 can be connected isochronously alongside the MC Servo to the clock
system of SINAMICS Integrated and the X142 technology I/Os.
138
Technology I/Os X142
(local send clock)
X
-
X
X (leading)
SINAMICS Integrated
(PROFIdrive Integrated)
X
X
-
1
X
System Manual, 11/2019, A5E46600094-AA
PROFIBUS DP interface
X126
-
-
-
-
SIMATIC Drive Controller