Operating Modes Of The Bus Terminal Controller; Mechanical Structure - Beckhoff BC7300 Manual

Start-up behaviour of the
Bus Terminal Controller
BC7300
Operating Modes of the Bus Terminal
Controller
Immediately after being switched on, the Bus Terminal Controller checks,
in the course of a "self test", all the functions of its components and the
communication of the K-Bus. The red I/O LED blinks while this is
happening. After completion of the self-test, the Bus Terminal Controller
starts to test the attached Bus Terminals (in a "Bus Terminal test"), and
reads in the configuration. An internal structure list is created from the Bus
Terminal configuration. In case of an error, the Bus Terminal Controller
enters the „STOP" state. Once the start-up has completed without error,
the Bus Terminal Controller enters the "fieldbus start" state.
Power On self test
Structure list
OK
PLC start /
Communication start

Mechanical structure

The system of the Beckhoff Bus Terminals is characterised by low physical
volume and high modularity. When planning a project it must be assumed
that at least one Bus Coupler and a number of Bus Terminals will be used.
The mechanical dimensions of the Bus Couplers are independent of the
fieldbus system. If large plugs are used, such as, for example, certain bus
plugs for the Profibus, the maximum height of the housing can be
exceeded.
Bus Terminal test
Basic Principles
Error
Stop
11