eWON General Reference Guide - eWON wiki
eWON General Reference Guide - eWON wiki
eWON General Reference Guide - eWON wiki
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5.4 NETMPI IO Server<br />
5.4.1 Introduction<br />
<strong>General</strong> <strong>Reference</strong> <strong>Guide</strong> IO Servers Configuration<br />
NETMPI IO server is used to communicate with SIEMENS PLC. The <strong>eWON</strong> will connect to the PLC’s MPI interface by means of the eLINK<br />
adapter.<br />
The eLINK adapter is an interface with an MPI interface on one side and an Ethernet TCP/IP interface on the other side.<br />
The eLINK interface will be configured with an IP that the <strong>eWON</strong> will use to poll data. In addition to the IP address, the <strong>eWON</strong> will need the MPI<br />
address of the PLC on the MPI bus.<br />
Using that eLINK interface, it is possible to poll different types of item in the PLC. These items types are described below.<br />
5.4.2 Setup<br />
Figure 87: NETMPI configuration window<br />
As for the Modbus and Unite protocols, it is possible to define topics, so that a single configuration can be applied to several Tags.<br />
5.4.3 Tag name convention<br />
IO Server Name NETMPI<br />
Topic Name<br />
Item Name<br />
A<br />
B<br />
C<br />
IO Server configuration<br />
ValueName,RemoteStationAddress,eLinkIpAddress PLC Address is defined Tag by Tag<br />
ValueName Topic PLC Address is used<br />
Table 72: NETMPI - IO server configuration<br />
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<br />
Tag level will be ignored.<br />
RG-001-0-EN ver 1.14 <strong>eWON</strong>® - 02/05/2012 - ©<strong>eWON</strong> sa Page 103