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General Reference Guide IO Servers Configuration
RG-001-0-EN ver 1.5 eWON® - 20/03/2009 - ©ACT'L sa Page 125
5.12 S7-300&400 (MPI/Profibus - ISOTCP)
5.12.1 Introduction
S73&400 IO Server is dedicated to communicate directly with SIEMENS PLC (S7-300 & S7-400).
The eWON will connect directly to the PLC’s MPI interface or Profibus DP interface.
WARNING: The MPI/Profibus interface requires a special serial port hardware!
ONLY the eWONs MPI/Profibus are able to communicate in MPI/Profibus
eWON product codes like EWxxx6x (i.e.: EW41264 eWON4001 MPI with pstn modem)
eWONs MPI/Profibus have a Serial Gender-Changer fixed on DB9 connector to provide female DB9
connector.
eWONs MPI/Profibus have a coloured (in light blue) square around DB9 connector labelized MPI (see photo
on right).
Others Serial IO Server (i.e.: PPI, modbus RTU) are not available on eWON MPI/Profibus.
The ISOTCP (Ethernet) is available on all eWON types.
With an eWON500 (with a standard Serial Port), you can have access to a S7-300&400 Siemens PLC by Ethernet thanks
to the ISOTCP protocol.
With an eWON500-MPI, you can have acces by the MPI port and by ISOTCP to your S7-300&400, if it has both interfaces.
Multi-Session: Since firmware 5.4, the ISOTCP-MPI gateway allows multiple clients to access the same PLC at the same time.
PPI MultiMaster (for S7-200): Since firmware 5.5, it is supported by the MPI port of the eWON (See “S7-200 (PPI - ISOTCP)” on page 130)
5.12.2 Setup
5.12.2.1 COM configuration
Figure 96: MPI link configuration
Parameter Description
Gateway MPI/Profibus
Destination Node
Identifies the PLC MPI/Profibus Destination address when ISOTCP is used
Protocol Type
Select protocol MPI or PROFIBUS.
As the MPI port configuration is shared by the S73&400 and the S7-200
IOServers, this combo box shows also the PPI MULTIMASTER protocol (See
“S7-200 (PPI - ISOTCP)” on page 130)
PPI MultiMaster and MPI/Profibus are mutually exclusive. It is not allowed to
use the S7-200 and the S73&400 IOServers on the MPI port at the same time
.
Figure 97: MPI/Profibus settings