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eWON Family - eWON Support

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5.13.2.4 Topic configuration<br />

General Reference Guide IO Servers Configuration<br />

Figure 103: Topic configuration<br />

Three (3) topics can be used for the IO Server. These topics are used to give a common property to a group of PPI/ISOTCP Tags like:<br />

• Enable/Disable<br />

• Global Device Address<br />

• Polling Rate<br />

Topic configuration item Description<br />

Topic enabled Enables or disables polling of all the Tags in the topic.<br />

Global Device Address<br />

Poll rate<br />

5.13.3 Tag name convention<br />

IO Server Name S7200<br />

Topic Name<br />

Item Name<br />

A<br />

B<br />

C<br />

See below for the Device Address Syntax. If an address is specified here, it will<br />

replace (overload) the address-defined Tag by Tag.<br />

Defines the refresh rate of the Tag name. In a complex application, we can<br />

imagine that some Tag names must be refreshed every second - typically for<br />

digital input - and other every minute - typically: temperature-.<br />

ValueName, Global Device Address PLC address is defined Tag by Tag<br />

ValueName Topic PLC Address is used.<br />

Table 107: S7200 IO server - Tag name convention table<br />

The Item Name can contain the PLC address where the value is polled, or not. If the address is also specified at topic level, the address specified<br />

at Tag level will be ignored.<br />

RG-001-0-EN ver 1.6 <strong>eWON</strong>® - 22/06/2009 - ©ACT'L sa Page 132

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