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OMRON
Note:
This process is repeated for any further DDE data transfers that are required.
DDE Server Points
A DDE server point receives data from or receives a request for data from an external Client
application. This chapter explains how to create "DDE Server Points", these points are exposed to
DDE Client applications either for "Read/Only" or "Read/Write" access. In order for a point to take
part in a conversation with a DDE Client, it must be given 'DDE Access'. The following dialog
demonstrates how to give a Real memory point, DDE Read/Write access:
A DDE Server point is created as follows:
1, 2, 3...
Release 2.0
5.
Enter "Sheet1.xls" in the Topic Name: field. This is the required topic, in
this case it is a Microsoft Excel worksheet named 'Sheet1.xls'. It is
possible to specify a specific topic: for instance, in Microsoft Excel, to
specify a sheet within a book a colon is used to delimit the information, e.g.
'Book1:sheet3.xls'.
6.
Enter "R1C1" in the Item Name: field. This refers to the item name.
7.
Enter "1" in the Array Size: field.
8.
Click the OK pushbutton to accept the settings in both the DDE Attributes
dialog and the Add Point dialog.
It is not necessary to give 'DDE Client Points' DDE access via the Advanced dialog
- this field is only used in the creation of 'DDE Server Points'. If the DDE Access
Read/Write setting is set 'ON', this point's value would then be 'exposed' to change
by external DDE server application(s) which may not always be desirable.
1.
Select the Add Point button from the Point Editor toolbar. The Add Point
dialog is displayed.
2.
Enter a meaningful name for the DDE Server point in the Point Name:
field.
3.
Click on the Advanced pushbutton. The Advanced Point Settings dialog is
displayed.
APPENDIX F – Obsolete Features
Page 315
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