36
UMG 96RM-PN
Bus structure
• All devices are connected in a bus structure (line) and
each device has its own address within the bus (see
also Parameter programming).
• Up to 32 subscribers can be connected together in a
single segment.
• The cable is terminated with resistors (bus termination
120Ohm, 1/4W) at the beginning and at the end of a
segment.
• With more than 32 subscribers, repeaters (amplifiers)
must be used to connect the individual segments.
• Devices for which the bus connection is switched on
must be under current.
• It is recommended that the master be placed at
the end of a segment.
• If the master is replaced with a bus connection,
the bus must be switched off.
• Replacing a slave with a bus connection that is either
switched on or de-energised can destabilise the bus.
• Devices that are not connected to the bus can be
replaced without destabilising the bus.
• The shield has to be installed continuously and needs
to be broadly and well conducting connected to an
external low voltage (or potential) ground at the end.
Fig. Bus structure
Slave
Slave
Slave
Slave
Slave
Slave
Repeater
Slave
Slave
Slave
Slave
Master
Speisung notwendig / power supply necessary
Busabschluß eingeschaltet / bus terminator on
T
T
T
T
T
Summary of Contents for UMG 96 RM-PN
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