uli

That solved my problem. Thanks a lot for the fast answer. My repley is late but I had to test this some days. But I the problem with the deallocation of the memory in the close task.vi is still unclear for me. I built the same structure for an digital input and there the memory runs not full. Maybe the problem is related to the DTCreateDoutChan.vi? Regards, Uli

Hello, Using a DT9817-R in LabView leads to a computer crash because the memory runs full. Running the very simple DO Test.vi leads to a crash after some hours because of full memory. Here is the block diagram of DO Test.vi And here the block diagram of the called DT9817 Dout.vi. Both vi's are also attached. What could I do to avoid these crash? Is this a problem in the used measurement computing vi's or dll's? Regards, Uli DT9817 Dout.vi DO Test.vi

Hello, how can I connect a digtial 24 V signal to the DI input of a 9817-R. In user manual is only a 5 V TTL explained. Thanks

I use a DT9817-R. Is it possible to write a single output bit? I only find labview examples where I the full 8 Bit port is written. But I need to change only the value of one bit and do not change the other ones.