Bosch Rexroth Inline Series, Configuring And Installing

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Integration of Inline Into the INTERBUS System
Application Description | Inline Electric Drives | Bosch Rexroth AG 15/58
and Controls
Control technology Control technology from Bosch Rexroth offers comprehensive networking options
with INTERBUS. All control systems are suitable for central or distributed use.
Basic tasks of control technology:
• Transferring output data to the output modules
• Receiving input data from the input modules
• Monitoring INTERBUS
• Sending error messages to the host system
• Indicating diagnostic messages
• Controlling the cyclic I/O protocol
Bus couplers The first step in creating a modular I/O station is to connect a bus coupler to the
INTERBUS remote bus. I/O modules may be installed branching off from this bus
coupler, to create a local bus.
A bus coupler divides the system into segments, thus enabling individual branches
to be switched off during operation. It also supplies the communications power for
the module electronics of the connected I/O modules.
A bus coupler must be supplied with non-interruptible voltage. This means that the
voltage must not be disconnected at the same time as the subsystem if the entire
bus system is to continue operating. Supply voltage failure at a bus coupler stops
the system and results in an error message for the bus segment.
Tasks of the bus coupler:
• Coupling the remote bus and local bus
• Supplying the I/O modules with communications power
• Refreshing the data signal (repeater function)
• Electrical isolation of the bus segments
• Connecting or disconnecting the local bus via firmware
• Connecting or disconnecting the outgoing remote bus via firmware
• If necessary, indicating errors via a floating alarm output (e.g., buzzer, light
signal)
Remote bus The remote bus connects the controller board with the remote bus devices and the
remote bus devices with each other.
Remote bus devices are bus couplers , specific I/O modules or a mixture of both.
Each has a local power supply and an electrically isolated outgoing INTERBUS
segment.
Remote bus branch A remote bus branch branches off the remote bus. A branch is connected to the
main line of the remote bus via a special bus coupler. This bus coupler enables the
connection and disconnection of the branching bus segment.
Local bus A local bus is a bus connection that branches off from a remote bus via a bus
coupler and interconnects the local bus devices. The bus coupler supplies the
connected devices with communications power.
Local bus devices are I/O devices that are used to create a distributed substation
in the control cabinet. The devices are connected to the remote bus via a bus
coupler. Branching is not permitted within the local bus.
The maximum number of local bus devices depends on the bus coupler used.
Bus segment A bus segment consists of a remote bus device and the I/O modules connected to
it. The preceding cable is also part of the segment.
I/O modules I/O modules connect INTERBUS to the sensors and actuators.