Siemens SINUMERIK 840D sl Function Manual page 186

G3: Cycle times
3.4 SINUMERIK 840Di with PROFIBUS DP
T
MAPC:
T
DP:
T
DX:
T
M:
T
I:
T
O:
GC:
R:
Dx:
MSG:
RES:
①
②
Figure 3-1
186
Master application cycle
NC position control cycle for SINUMERIK 840Di always applies for: T
DP cycle time: DP cycle time
Data exchange time: Total transfer time for all DP slaves
Master time: Offset of the start time for NC position control
Input time: Time of actual value sensing
Output time: time of setpoint activation
Global control message frame (broadcast message frame) for cyclic synchronization of the
equidistance between the DP master and DP slaves
Computation time for speed or position controller
Useful data exchange between the DP master and DP slaves
Acyclic services (e.g. DP/V1, pass token)
Reserve: "Active pause" until the isochronal (equidistant) cycle has expired
The actual values for the current DP cycle/position control cycle are transferred from the DP
slave drives to the NC position controller.
The setpoints computed by the NC position controller are transferred to the DP slave drives.
Optimized DP cycle with 3 DP slaves with a SIMODRIVE 611 universal
MAPC
Function Manual, 09/2011, 6FC5397-2BP40-2BA0
= T
DP
Special Functions