PLC Connect OPC connection bit unpack
It is possible in 800xA to read specific bit from OPC variable as it is possible for Modbus TCP communication (i.e. HRA10,bit1) ? I've got situtation where all binaries are packed into one integer, previously it was working on Modbus (and it was ok) and now on OPC I've faced problem with that. Any solutions?
Hi, you can but not so easy.
In OPC you get the items, with timestamp and quality, if you pack binaries into one integer then you loose, timestamp and quality.
But I guess you can not affect the other side. Then the only solution is to use the Open interface in PLC Connect.
This is described in: 3BSE035041-610 B PLC Connect Configuration manual page 51-66 and C# code example on page 64.