System information

General Reference Guide IO Servers Configuration
RG-001-0-EN ver 1.5 eWON® - 20/03/2009 - ©ACT'L sa Page 130
5.13 S7-200 (PPI - ISOTCP)
5.13.1 Introduction
The S7200 IO Server is dedicated to communicate directly with SIEMENS PLC of family S7-200.
The eWON will connect directly to the PLC’s PPI interface.
Since firmware 5.5, eWONs with an MPI port are able to communicate on a PPI MultiMaster bus.
Then, to communicate with a S7-200 device you could use either an eWON with a serial port or an eWON with an MPI port.
The eWON acts always as MASTER.
The standard serial port of eWON must be configure in RS-485 (with dipswitch) to communicate in PPI.
The ISOTCP (Ethernet) is available on all the eWON types.
5.13.2 Setup
5.13.2.1 Gateway configuration
Figure 99: Gateway parameters
5.13.2.2 COM configuration (serial port)
Usage
eWON with SERIAL port
(EWxxx0x)
eWON with MPI port
(EWxxx6x)
MonoMaster
eWON is the ONLY Master on the PPI network.
Yes
Yes
(since firmware 5.5)
MultiMaster
eWON is not the only Master on the PPI network.
Other masters (HMI or PPI multimaster programming cables)
may be present at the same time on the PPI bus.
No
Yes
(since firmware 5.5)
Table 105: PPI MonoMaster/MultiMaster usage
Parameter Description
Destination PPI Address Identifies the PLC PPI Destination address when ISOTCP is used