Hello! I have to decide on yet another Biesse retrofit and for that I am trying to understand what i/o boards I would use.
There definitely will be required at least 4x remote sserial boards for inputs and outputs on moving stage of machine and inside main frame assembly (separate from control cabinet). >From my previous experience of setting up wiring etc I think that 7i94T board would be very convenient since servo drives need 0-10V analog signal and there is 7i83 for that. Only missing piece in my puzzle is sserial board for 4x encoder input. I know that theoretically I could use 7i77 board on db-25 expansion connector of 7i94T. But the thing is that I would like to use inexpensive boards so that their replacement is not that "painful". For a little context - I have several 7i48 and 7i33 boards that have either dead encoder input or several dead analog output channels (and are unusable at the moment as I need 4x encoder inputs and 4x analog outputs and I already need to replace yet another 7i32 in a current retrofit I am working on - I have checked encoder inputs with oscilloscope, voltage level is 3V, I have no idea what caused encoder inputs to stop working and even more I do not understand why would analog outputs stop working when I replace the board and it happily works afterwards (like it was with the laser rebuild project I wrote some time ago and that has now been delivered to customer). Long story short - I have tried to understand the cause, could not find, so I am adjusting to face the consequences of need for replacement of some boards. So I would like to find out what options I have for at least 4x encoder inputs for 7i94T board. Viesturs _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
