User's Manual

Design
Siemens PLT 130
.
1994
3/4
Bus components
Connector board
AF
The remote bus cable is connected to the bus converter via the
connector board AF.
The board is provided with a terminating resistor which can be
activated using a jumper . The resistor is activated in the con-
nector board of the first and last bus participants (Fig. 3/3).
Standard locations:
Basic cabinet of the AS 235 and AS 235 H automation sy-
stems
Basic system of the AS 235 K automation system
OS 265-3 system cabinet
Remote bus connection unit.
Remote bus BRemote bus A
4-km bus
e.g. TELEPERM M
cabinet with
AS 235 H
e.g. Remote bus
connection unit
(OS 265-3)
e.g. TELEPERM M
cabinet
a Terminating resistor F (activated by jumper)
AF Connector board
UI Bus converter
Fig. 3/3 Redundant remote bus with terminating resistors
Remote bus connection unit
The remote bus connection unit is used to connect those bus
participants to the remote bus which are not installed in
TELEPERM M standard cabinets, as e. g. the OS 520 operation
and monitoring system.
The power supply module, inductive bus converters, connector
board for connection of one participant or of a participant group
(local bus island) are fitted ready for connection in a separate
housing which is to be placed underneath a table.
Remote bus connection
subrack
The remote bus connection subrack is used to connect those
bus participants to the remote bus which are fitted in cabinets
according to the customer requirements, e. g. SIMATIC S5-155U
programmable controllers.
The power supply module and inductive bus converters for con-
nection of one or several participants installed in the cabinet are
accomodated in a subrack which has been prepared for instal-
lation in a cabinet.
Bus
coupler
Autonomous buses are connected together via a bus coupler.
Data transfer is then possible between several systems or sys -
tem areas over larger distances (> 4 km) with decoupling of the
data traffic on the buses.
The intermediate connection of up to 2 bus couplers is permissi-
ble for data transfer between any two participants in the com-
plete bus system.
Two different structures are possible when designing a bus sy-
stem with bus couplers:
Line structure
Hierarchical structure.
≤
≤
BK Bus coupler
Fig. 3/4 Bus system with linear structure
≤
≤
BK Bus coupler
Fig. 3/5 Bus system with hierarchical structure
In both applications, all buses or individual buses can be redun-
dant as desired (Fig. 3/6).
BK Bus coupler
Bus 0 and bus 2 are redundant for availability reasons. To reduce cable
costs, bus 1 is not redundant and is e. g. the connection between two buil-
dings.
Fig. 3/6 Redundant bus, example
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This catalog is out of date, see note on page 2