Doing simultaniusly two task with NI PCI 6221
I am using timer 1 configure as two-signal edge-separation measurement. I want to one of the signal witch start the counting to be taken from the same device NI PCI 6221. I want set one of DI0 and i want to this setting started the counting. While I am setting the DI0 timer should be already configure and arm. I understand that ,this mean two task shuld be done simultaniusly. How can I do it.
Hi Fazi,
As I understand it, you would like to use a DIO line to start your counter task. Start triggers for counter tasks must be set using an the arm start trigger. Here is a great knowledgebase that talks about using arm start triggers on M Series devices such as the PCI 6221. In addition, I have taken the Meas Two Edge Separation-Buffered-Continuous.vi example (Help » Find Examples » Hardware Input and Output » DAQmx » Counter Measurements » Two-Signal Edge-Seperation) and added an arm start trigger below. You will need to connect the digital start trigger line to a PFI line to use it as the arm start trigger.
I hope this helps,
Paul C.Message Edited by Paul C. on 10-23-2007 11:06 AM
Attachments:
armstart.JPG 45 KB
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