MOVIFIT® Master-Slave Topology
Theory of operation
In a master-slave installation, the master unit takes on the communication link for several slave units.
The slave units are connected to the master unit via a system bus (SBus). The master unit thus serves as
a gateway for several slave axes.
Master unit
A master unit is a standard MOVIFIT® MC, SC or FC with integrated communication interface and Technology function level.
Slave unit
A slave unit is a MOVIFIT® SC or FC unit without fieldbus interface, only with power section (frequency inverter or motor starter).
A slave unit has four digital inputs. Communication with the higher-level system controller takes place through the master unit.
The master unit transfers the data to the respective slave unit via SBus.
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Customer benefits
- Master: Standard-MOVIFIT® with Technology function level
- Cost advantage with slave units without bus module
- 1 to 7 MOVIFIT® drive controllers possible for only one bus address
- Local control possible in master
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Master-Slave installation with a MOVIFIT® FC as
master and two MOVIFIT® FCs as slaves:
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A mixed setup is also possible. Master-Slave installation with a
MOVIFIT® FC as master and two MOVIFIT® SCs as slaves:
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Advantages
- Only one fieldbus node for one function line, which reduces the
number of bus addresses
- Simple and cost-effective implementation of multi-axis applications
(roller conveyors, hoists, rotary tables)
- Cost-effective, future-oriented Ethernet communication by omitting Ethernet interfaces
- Drive-oriented application functions are executed in the master unit. The intelligent fieldbus interface
controls subsequent power sections
(there is no synchronous operation).
- Modularization of the system: Multi-axis functions are combined within one function line
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 "Schematic representation of system topology")
 "Schematic representation of system topology")
Operating principle ...