6.5.2 Setting a send cycle clock and system cycle clocks
Requirement
The SIMOTION system cycle clocks (servo/IPO/IPO_2) are based on the
SINAMICS Integrated DP cycle or the PROFINET send cycle clock, depending on the
PROFINET real-time class and the type of data transfer. The cycle clock source can be
generated
"internally" by the SIMOTION D410‑2; otherwise, it is obtained "externally" from the
clock signals received at the PROFINET interface.
Table 6-5 Basis for the SIMOTION system cycle clocks/cycle clock source
Real-time class in which the
PROFINET
interface is oper‐
ated
Data transfer Basis for the SIMOTION system cy‐
cle clocks
Cycle clock source
DP cycle (Inte‐
grated)
PROFINET
send cycle
clock
1)
RT communication X Internal
IRT communication The D410‑2 DP/PN is the
SYNC master in the I/O sys‐
tem; synchronized data traffic
takes place
2)
X Internal
The D410‑2 DP/PN is the
SYNC
slave in the I/O system;
synchronized data traffic takes
place
2)
X External
Internal
(as substitute value)
No synchronized data traffic
2)
X Internal
1)
If the PROFINET send cycle clock forms the basis for the SIMOTION system cycle clocks, the DP cycle (SINAMICS
Integrated and external PROFIBUS interface) and the servo cycle clock must be the same.
2)
Synchronized data traffic, e.g. by means of:
- Controller-controller direct data exchange
- I/O device in separate I/O system
Setting the DP cycle in HW Config
To set the DP cycle of the SINAMICS Integrated, double-click the SINAMICS block on the
integrated PROFIBUS in HW Config.
The
"DP Slave Properties" dialog box is opened. You can adjust the DP cycle of the SINAMICS
Integrated on the "Isochronous mode" tab. See also Setting DP Slave properties
(Page 169).
Table 6-6 SIMOTION D410‑2 DP/PN value range
D410-2 DP/PN
DP cycle ≥ 0.5 ms (DP internal)
≥ 1.0 ms (DP external)
Grid 0.125 ms
If, in addition to the drive on the SINAMICS Integrated, external drives are also to be connected
via isochronous PROFIBUS, the DP cycle must be ≥ 1 ms.
Parameter assignment / addressing
6.5 Configuring PROFINET IO
SIMOTION D410-2
128 Commissioning and Hardware Installation Manual, 01/2015