|
DDE |
|
|
Stands for Dynamic Data Exchange. This is a convenient method of transferring the current set of readings to other applications. Data is updated continuously, about once per second. Data items are identified by three keywords: Application, Topic and Item. The keywords accepted by PicoLog are:
Value - the current value Units - the units Alarm - the alarm status Each DDE request returns a list of values for each parameter. To read the current values into Excel, type the following command into a spreadsheet cell: =PLW|Current!Value
To read the current values into Quattro Pro, type in the following command into a cell: @DDELINK([PLW|Current]Value)
Most application programming languages (C, Delphi, Visual Basic) provide tools to make DDE requests from other applications. |