Siemens RS 485 / 6ES79720AA010XA0 Repeater

Application of the RS 485 Repeater:

The RS 485 repeater connects two PROFIBUS or MPI segments using RS 485 technology
with maximum 32 nodes. It enables transfer rates from 9.6 kbps to 12 Mbps.
You need an RS 485 repeater if:
● More than 32 nodes (maximum 127, including repeaters) are connected to the bus
● Segments are operated ungrounded on the bus (electrical isolation of segments)
● The maximum cable length of a bus segment is exceeded (see the table below)
● Help is required during the commissioning
– Switch for disconnecting segments
– Display of bus activity
– Disconnecting a bus segment in the case of incorrectly inserted terminating resistors
● The signals are to be regenerated in amplitude and time