IDEC WindSRV - Manual (Page 82)

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KEPServerEX5 Help
For additional information, click the Help button in the Hints dialog. This invokes the driver specific help documentation
at the page that covers data addressing for the device currently selected.
4. Commit the tag to the server by pressing Apply in Tag Properties. The tag should now be visible in the Tag View
area of the server. If only one tag needed to be added, users would be finished at this point. For this example,
however, a second tag needs to be added for use in
Tag Scaling .
5. If Apply has already been pressed, click the New icon in Tag Properties. This clears all of the fields and returns them
to their default state. Enter the following data:
 Tag name: MySecondTag
 Address: K000
 Description: My First Scaled Tag
 Data Type: Short
 Client Access: Read/Write
 Scan rate: (Doesn't Apply)
6. Next, press Apply to commit the second tag.
Note: When entering tag information, users can and will be presented with an occasional error message. The error
messages presented will be generated by either the server or the driver. The server will generate error messages when
users attempt to add a tag using the same tag name as an existing tag. The communications driver will generate errors
for three possible reasons:
1. If there are any errors entered in the format or content of the address field, including errors in the address range
of a particular device specific data item.
2. When the data type selected is not available for the address that has been entered.
3. If the client access level chosen is not available for the address that has been entered.
In each of these cases, the error message will be specific in describing the error. The error message will also provide
the option of directly invoking the driver specific help documentation in order to help remedy the problem.
Dynamic Tag Addressing
Dynamic Tag Addressing is another way of defining tags. Dynamic tags are used to define tags solely in the client
application. Instead of creating a tag item in the client that addresses another tag item that has been created in the
server, users only need to create a tag item in the client that directly accesses the device address.
Note 1: The server creates a special Boolean tag for every device in a project that can be used by a client to determine
whether that device is functioning properly. To use this tag, specify the item in the link as Error. The value of this tag is
zero if the device is communicating properly; otherwise, it is one.
Note 2: If a device address is used as the item of a link, such that the address matches the name of a user-defined tag
in the server, the link will reference the address pointed to by the user-defined tag. Furthermore, with the server's
online full-time operation, users can technically begin using this project in an OPC client at this moment. For the sake of
work preservation, proceed to Saving and Testing the Project.