Siemens SINAMICS S120 Function Manual page 790

Communication
11.2 Communication via PROFIBUS DP
Setting criteria for times
● Cycle (T
– T
– T
Note
After T
switched on (POWER ON) or parameter p0972 = 1 (reset drive unit) must be set.
● T
– Setting the times in T
– T
● Settings and tuning can be done using a tool (e.g. HW Config in SIMATIC S7).
Minimum times for reserves
Table 11- 11 Minimum times for reserves
Data
Basic load
Per slave
Per byte of user data
One additional class 2 master
790
)
DP
must be set to the same value for all bus nodes.
DP
> T and T > T
DP DX DP
has been changed on the PROFIBUS master, the drive system must be
DP
and T
I O
position control loop.
> T + T
O DX Omin
O
and T as short as possible reduces the dead time in the
I O
Time required [µs]
300
20
1.5
500
Function Manual, 11/2017, 6SL3097-4AB00-0BP5
Drive functions