david a Posted June 20, 2011 Report Share Posted June 20, 2011 1. Firstly - I checked a PCOM over RS485 using the objects of "uncomdriv.dll" to perform several read/write operations from my software app and it was succesfully. 2. Secondly - I checked a PCOM over ETHERNET using a REMOTE ACCESS utility and it was succesfully. 3. Finally - I checked a PCOM over ETHERNET using the objects of "uncomdriv.dll" to perform several read/write operations from my software app and it was not working Pls, Your help with a sequence of operations/definitions required to initialize the PC/PLC to implement the PCOM functions.as described at 3 above. regards david a. Link to comment Share on other sites More sharing options...
Lionel Posted June 24, 2011 Report Share Posted June 24, 2011 Dear David, Did you see that you've to add an header before your PCOM message when using Ethernet ? (last page of the PCOM documentation) Best regards, Link to comment Share on other sites More sharing options...
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