out port information and use of (and) (or) operator with number

[paolo5]

Hi everyone,
May someone help me on the use of out port.VI.
Where may I find some documentations?
Which value have I send to manage the line of the parallel port of a
specified address?
I saw some examples, but I found boolean operator used with number u8
before being wired with out port.VI, what does they rappresent?


Thanks perseo.

[Lab Viewer]

Regarding documentation, do a search (entire site) on NI's site with either "+out +port" or "+parallel +port" target and you'll have lots of examples and documentation.

Regarding boolean operators with u8, they are used to set or clear some lines, based on previous values (OR is to used to enable, AND to disable - for example, you want to enable the third line (bit) without affecting the others ... thus, read value - perform OR 4 (which is 00000100) - write value).

Hope this helps