Good day to all,
I am trying to establish DDE communication between my PLC (1769-L23ER) and MS Access via RSLinx Classic Gateway (3.9) over Windows Server 2012 R2. On my developing PC (Windows 7), there isn't any issue at all. But when I port the codes over to Windows Server 2012 R2, MS Access is not able to establish DDE communications with the PLC. I was wondering what went wrong.
The error message from MS Access is "MS Access can't find the specified application and topic because it can't open the DDE channel, err.Number is 282.
The code for getting the channel is as follow
OpenRSLinx = Application.DDEInitiate("RSLinx","PLC-D")
I was wondering was there anything I have miss out. eg. Configuration of the server, path settings, etc..
Any help is welcome. TIA