System information

General Reference Guide IO Servers Configuration
RG-001-0-EN ver 1.5 eWON® - 20/03/2009 - ©ACT'L sa Page 94
5.4 NETMPI IO Server
5.4.1 Introduction
NETMPI IO server is used to communicate with SIEMENS PLC. The eWON will connect to the PLC’s MPI interface by means of the eLINK
adapter.
The eLINK adapter is an interface with an MPI interface on one side and an Ethernet TCP/IP interface on the other side.
The eLINK interface will be configured with an IP that the eWON will use to poll data. In addition to the IP address, the eWON will need the MPI
address of the PLC on the MPI bus.
Using that eLINK interface, it is possible to poll different types of item in the PLC. These items types are described below.
5.4.2 Setup
Figure 78: NETMPI configuration window
As for the Modbus and Unite protocols, it is possible to define topics, so that a single configuration can be applied to several Tags.
5.4.3 Tag name convention
The Item Name can contain the PLC address where the value is polled, or not. If address is also specified at topic level, the address specified at
Tag level will be ignored.
IO Server configuration
IO Server Name NETMPI
Topic Name
A
B
C
Item Name
ValueName,RemoteStationAddress,eLinkIpAddress PLC Address is defined Tag by Tag
ValueName Topic PLC Address is used
Table 65: NETMPI - IO server configuration