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Parameter assignment
4.6 Parameter assignment of the DP communication
Execution scheme T
Figure 4-13
T
MAPC
T
DP
T
DX
T
M
T
I
T
O
GC
R
Dx
DPV1
GTR
68
: T
= 1 : 1
MAPC
DP
Example: Optimized DP cycle with T
Master application cycle: Position control cycle clock
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 the actual value acquisition. The actual values are transferred to
the DP master in the next DP cycle.
Output time: Time of the setpoint acceptance. The setpoints were generated by the
DP master application in the previous DP cycle.
Global control message frame (broadcast message frame) for cyclic synchronization
of the equidistance between the DP master and DP slaves
Processing time for speed or position controller
User data exchange between the DP master and DP slaves
After cyclic communication, an acyclic service is sent, if the token holding time T
has not yet been exceeded. T
GAP, TOKEN, RESERVE:
GAP: An attempt is made during GAP to accept new active stations.
TOKEN: The token passing is either to itself or other masters.
RESERVE: The reserve is used as an "Active break" for the station to send the token to
itself until the equidistant cycle expires.
: T
= 1 : 1
MAPC
DP
is calculated by the engineering system.
TH
SIMOTION ADI4 - Analog Drive Interface for 4 Axes
Equipment Manual, 07/2017, A5E33446849B
TH
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