11-14-2015 06:25 AM
Hi...
i ve som problems with simple daqmx read/write.
I'v got a DIO24 pci card (NI PCI-6503). the card has 3 ports by 8 bits, wich each can bi configurated as input or as output.
When i start a read, i stop the write-task and start the read-task. the problem there is, that starting the read-task (with DAQmxStartTask), all lines of this port are going to zero. i only have two input lines, the other are outputs.
is it possible, that starting the read-task dont clear de whole port ?
i'm programming with the daqmx lib over labwindows cvi 2013 ...
thanks and excuse my bad english
king regards
lukas roder
11-16-2015 03:16 AM
Hey lukas,
I have never used the bidirectional function of this device. This documents may help you:
CVI - DAQmx : How do I configure a channel as bidirectional? - Discussion Forums
http://forums.ni.com/t5/Digital-I-O/CVI-DAQmx-How-do-I-configure-a-channel-as-bidirectional/td-p/947...
NI PCI-6503 Supported Properties - NI-DAQmx C Reference Help - National Instruments
http://zone.ni.com/reference/en-XX/help/370471W-01/cdaqmxsupp/pci-6503/
Stephan