Setting Of The Cycle Clocks (One Servo Activated = Default) - Siemens SIMOTION D4 5-2 Series Commissioning And Hardware Installation Manual

5.6.2.2

Setting of the cycle clocks (one servo activated = default)

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 Additional information on
configuring the SINAMICS Integrated (Page 209).
Table 5- 7
DP cycle
Grid
If, in addition to the drives on the SINAMICS Integrated / CX32-2, external drives are also to
be connected via isochronous PROFIBUS, the DP cycle must be ≥ 1 ms.
Setting the send cycle clock in HW Config
The send cycle clock for PROFINET IO must be set in the "Domain Management" dialog in
HW Config. To do this, select the "Edit" > "PROFINET IO" > "Domain management ..." menu
command in HW Config and set the desired cycle clock.
The PROFINET interface can be operated with a send cycle clock in the range of 0.5 ms ≤
send cycle clock ≤ 4 ms when one servo is used. The smallest configurable grid is 0.125 ms.
If there are IO devices with RT class "RT" in a sync domain, it is only possible to set the
send cycle clocks 0.5 ms, 1 ms, 2 ms and 4 ms.
Cycle clock scaling
As of V4.3, a reduction ratio for the PROFIBUS cycle clock to the Servo cycle clock is
possible. The reduction ratio is only permitted when PROFINET IO with IRT has not been
configured. A reduction ratio for the PROFINET send cycle clock to the PROFIBUS cycle
clock is also possible.
Example:
PROFINET send cycle clock = 0.5 ms
PROFIBUS cycle clock = servo cycle clock = 1 ms
The PROFIBUS cycle clock can be operated relative to the PROFINET send cycle clock at a
ratio of 1:1 to 16:1.
The table below shows the possible ratio settings for the SIMOTION D4x5-2 system cycle
clocks based on the DP cycle of the SINAMICS Integrated or PROFINET send cycle clock.
SIMOTION D4x5-2
Commissioning and Hardware Installation Manual, 02/2012
SIMOTION D4x5-2 value range
D425-2 DP, DP/PN
D435-2 DP, DP/PN
≥ 0.5 ms (DP internal)
≥ 1.0 ms (DP external)
0.125 ms
1)
Parameter assignment / addressing
5.6 Configuring PROFINET IO
D445-2 DP/PN
D455-2 DP/PN
≥ 0.5 ms (DP internal)
≥ 1.0 ms (DP external)
0.125 ms
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