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SIMATIC PC BI45/FI45 PII, Technical Description
C79000-G7076-C794-03
1.5
Connecting the MPI/DP Interface
You can connect your IPC to PROFIBUS-DP networks via the optically
isolated *) MPI/DP interface. The connection is established via SINEC L2
components for stationary links or via an MPI connecting cable with a length
of 5 meters for non-stationary links (order no.: 6ES7001-0BF00-0AA0).
SINEC L2 components and MPI connecting cables are not included with the
IPC and have to be ordered separately. The MPI connecting cable (5m) can
only be employed for data transfer rates up to 187.5 Kbps.
To connect your IPC to a PROFIBUS-DP network, proceed as follows:
1. Switch off your IPC.
2. Plug the connecting cable (of the SINEC L2 components or the MPI
connecting cable) into the MPI/DP socket connector of your IPC and
tighten the connector by means of screw-type locking.
3. Switch on your IPC.
!
Caution
Risk of damage to the unit!
Before plugging in the connecting cables, you must discharge the
electrostatic charge of the cables and of your body by briefly touching a
grounded object (ESD guideline).
You can network up to 32 devices (PC, PG, PLC or DP components) via the
MPI/DP interface in one segment. The interconnection to the PROFIBUS-DP
segments is established via an optically isolated *) RS 458 port, which is part
of the interface.
Interconnect several PROFIBUS-DP segments via a repeater.
The entire PROFIBUS-DP network has a maximum capacity of 127 stations.
The data transfer rate of the MPI network is 187.5 Kbps. The data transfer
rate that can be achieved via MPI/DP interface in the PROFIBUS-DP
network ranges from 9.6 Kbps up to 1.5 Mbps.
Note
For further information on configuring a PROFIBUS-DP network please
refer to the “S7-300 Hardware Manual,” order no.: 6ES7030-0AA00-8AA0.
*) Optically isolated within SELV circuit
Connecting a
PROFIBUS-DP
Network via
MPI/DP Interface
PROFIBUS-DP
Network
System Unit