Siemens Simovert Masterdrives Compendium page 334

Communication / PROFIBUS
Data exchange via
PROFIBUS
8.2-4
This enables very rapid data exchange between the higher-level systems
(e.g. SIMATIC, SIMADYN D, PC/PGs) and the drives. Access to the
drives is always made according to the master-slaves method. The
drives are always the slaves and each slave is clearly defined by its
address.
Higher-level MASTERDRIVES
computer
"Master"
PROFIBUS interface (PROFIBUS cable)
Fig. 8.2-2 PROFIBUS interfaces
The cyclical communications functions are determined by the
PROFIBUS-DP basic functions in accordance with EN 50170.
For purposes of parameterization during cyclical data exchange with
intelligent drives, acyclical extended communications functions are also
used which are defined in PROFIBUS Guideline No. 2.081 (German) or
2.082 (English).
The following illustration contains an overview of the communications
functions which are enabled with the CBP.
Automation
S7, S5
Master class 1
and
others
MSCY_C1
PROFIBUS DP
Cyclical
channel
Fig. 8.2-3 Data-traffic channels of the CBP
Other
"Slave"
"Slave"
CBP
PG / PC
MSAC_C1
Acyclical
channel
(only S7) (only DriveMon.)
MASTERDRIVES - CU
6SE7087-6QX70 (Version AK)
Compendium Motion Control
Other
nodes
DriveMonitor
Master class 2
MSAC_C2
Acyclical
channel
CBP
MASTER-
DRIVES
Siemens AG
SIMOVERT MASTERDRIVES
09.2008