MPI/PPI
1Description
The MPI/PPI-cable connects the programming device or the computer with the MPI-interface of
an S7-300/400 or with the PPI-interface of an S7-200 over the serial interface (COM-Port). The
cable recognizes automatically while attach on it on the PLC, which PLC-type is connected. At
the first access from the PD´s on the cable it recognizes the baud rate for communication with
the PLC. With the programming device PG-2000 or S7-for-windows the MPI/PPI-cable works up
to 115.2 kbaud on the computer side.
Here it can communicate with each member which is connected to the bus or even with the
backplane bus. It is the best to work over the S7-project.
The MPI/PPI-cable supplies itself from the PLC and didn´t need a foreign supply. All power
supplies are galvanic seperated. To reach high distance to an PLC with the MPI/PPI-cable you
need the MPI-NETZ-adapter to feed the cable with the 24VDC supply voltage.
2System requirements
2.1 Operating system (s)
Windows 98 + SE
Windows ME/NT/2000
Windows XP
Windows Vista
Windows 7
2.2 Software
PLC - programming software (eg PG2000, Step © 7, S7 for Windows, Microwin)
2.3 Hardware
9pin. or 25 pins. COM interface
24V power supply (MPI or PPI interface)
3Installation
3.1 Hardware
MPI/PPI standard mode:
The cable is plugged with the short cable side to the MPI- or PPI-port of the PLC. The MPI/PPI-
cable sources itself normally with the 24V of this port and do not need externel voltage. The
cable needs everytime a PLC of course the 24V supply or optionally the MPI-Netz-Adapter. The
longer cable side has to connect in the COM-port of your PD or PC.
As the cable has supply voltage, you can see in the display the version of the included firmware
and start with an internal test of the included parts. After this test the adaptor checks if he is
connected to a PLC and tries to recognize the baudrate of the connected bus. In the display of
the cable you can see all relevant information.
The cable detects automatically the baudrate parameters to the programming device when the
communication starts and will use them.
If your PD or PC has only a COM-port with 25pin, you can use a normal "mouse adapter" or our
article number 9359-9 to change the pins from 25 to 9pin.
If you will use the plc-programming-software PG2000 or S7-für-Windows the MPI/PPI-cable will
work with 115.2 kBaud on the PC-side.
