CTI Janus Programmable Automation Controller IOG
49
Profibus Connector
A special DB 9 connector is recommended for all Profibus DP installations.
Connector such as the one pictured above, provide either snap-in or screw terminal termination, horizontal cable
connection, and switchable termination. Connectors such as these are commonly available from your distributor or
other industrial suppliers.
Profibus Topology
The Janus Controller supports up to 64 Profibus slave devices.
Profibus slave devices are connected in a “daisy chain” arrangement as indicated in the following illustration
.
Up to 32 devices can be connected on a single segment. To increase distance or the number of devices supported,
segments can be interconnected by using repeaters. Up to 10 segments may be connected together
.
R
C
P
U
DP
Slave
DP
Slave
DP
Slave
DP
Slave
DP
Slave
R = Repeater
Segment
Segment
DP
Slave
C
P
U
R
B
C
R
B
C
DP
Slave
DP
Slave
