DDE and SQL server
DDE and SQL server
(OP)
I have to start learning DDE because I have to get a PLC to communicate with SQL server (trough the serial port or an Ethernet card) and I would like to know if anybody has documention to suggest or anything that would help to get familiar with DDE.
Thank you
Thank you





RE: DDE and SQL server
Afterall communication with PLC is done via RS-232 port. So you need to use MSCOMM.OCX ActiveX component or use Win32 API directly.
As for database access, you could use for example ActiveX Data Objects a.ka ADO library.