Siemens SIMATIC PANEL PC 877 Operations Instructions Page 46

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Integration into an automation system
6.2 Device in SIMATIC S7 network
SIMATIC IPC677C
46 Operating Instructions, 05/2010, A5E02722710-01
SIMATIC NET
You can create, run and configure the SIMATIC installation with this software package.
Information on this can be found on the SIMATIC NET Manual Collection CD. The software
package and the documentation are not included in the package.
Additional information
You can find additional information in the catalog and in the Internet of Siemens A&D.
http://www.siemens.com/automation/mall
6.2 Device in SIMATIC S7 network
6.2.1 MPI/PROFIBUS-DP network
You can connect the device to a SIMATIC S7 automation system or a PROFIBUS DP
network via the MPI/DP interface. You can connect up to 32 PC, PG, or AS devices to one
network segment. The use of repeaters allows you to interconnect several
MPI/PROFIBUS DP network segments. The complete MPI/PROFIBUS DP network consists
of a maximum of 127 stations.
The device is physically connected to the MPI/PROFIBUS DP network via an electrically
isolated RS485 interface on the PC motherboard. The potential is isolated within the safety
low voltage circuit (SELV).
The transmission rate is limited to 187.5 Kbps with the 5-meter MPI cable for connecting to
the SIMATIC S7-CPU. To achieve baud rates over 1.5 Mbps, you require a 12 Mbps
PROFIBUS cable with the order number 6ES7901-4BD00-0XA0. In the PROFIBUS DP MPI
network, you can achieve data transmission rates of 9.6 Kbps to 12 Mbps.
6.2.2 Connecting an S7 automation system
Coupling
The device is coupled via the MPI/DP interface as follows:
With MPI networks S7-200, S7-300, and S7-400
PROFIBUS DP networks with DP components
Hardware requirements
You can use the following components for coupling or networking with PROFIBUS:
RS 485 interface, MPI/DP interface, onboard
PROFIBUS cable
Note
Refer to the SIMATIC Net catalog IK PI for more information about SIMATIC Net
expansion cards.
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