Hello again! I checked 7i39 manual 2 more times, did not find any warning that would tell not to pull up to 5V, so I turned PC off and set all the 5i23 connectors to pull up to 5V.
What I am seeing now makes me think that there is something wrong: In HAL file I have: setp hm2_[HOSTMOT2](BOARD).0.gpio.040.is_output 1 setp hm2_[HOSTMOT2](BOARD).0.gpio.040.invert_output 1 When output is "false": There are 3,46V between 5i23 pin and GND. There are 1,68V between 5i23 pin and +5V. When output is "true": There are 0.6V between 5i23 pin and GND. There are 4.65V between 5i23 pin and +5V. I measured: it actually has 5,4V between +5V and GND. I think that voltages, when output is "true" are ok, but I think that there is something wrong with the "false" state. Am I missing something here? Viesturs 2012/1/27 Viesturs Lācis <viesturs.la...@gmail.com>: > Hello! > > In my attempts to understand, why I cannot get my diy output driver > for switching the laser power on/off, I discovered that 5i23's gpio > pins aru pulled up to only 3,3V, not 5V, when turned off, so there is > 1,7 V still remaining supplied to optoisolator. > There are jumpers on 5i23 that determine, if pins are pulled up to 3,3 or 5V. > I have 7i39 card attached to the same connector. Is there a chance for > possible damage for 7i39, if I will set that connector to pull up all > pins to 5V instead of 3,3V? > > Viesturs ------------------------------------------------------------------------------ Try before you buy = See our experts in action! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-dev2 _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
