The description PLUS MINUS ZERO refer to 3 different sensed positions of the slide, and dont say anything about the voltages. Your schematics likely show a voltage going to them, or a pull up resistor tied to them. You really have to look at the schema for that.
THE ABCD on a turret makes me think the encoder is very coarse and the information ABCD is really just a 4 bit count of position. This is more credible if your turret has less than 17 positions. It is an encoder, just not the sort most people think of. The turret for the Mazak was just holes in a yard wide disk and prox sensors. after i unmasked it, it was pretty simple to understand. It may be like yours. Again, your schematics should tell you the voltage supplied, or (at least ) lead you to one end that you can measure. hth TomP On Thu, 2008-06-12 at 19:22 -0400, Ed wrote: > Going throuogh the schematics for my CHNC the limit switches and the > home switch have three terminals PLUS MINUS and ZERO. Are these voltage > or polarity dependent or are they simple switches? Also the turret > encoder shows an A B C and D outputs. Are these binary or BCD and why 4 > lines when 3 would be enough for 8 positions? What voltage to this > encoder? Probably more questions later as I dig into it. Thanks. Ed. > > ------------------------------------------------------------------------- > Check out the new SourceForge.net Marketplace. > It's the best place to buy or sell services for > just about anything Open Source. > http://sourceforge.net/services/buy/index.php > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users ------------------------------------------------------------------------- Check out the new SourceForge.net Marketplace. It's the best place to buy or sell services for just about anything Open Source. http://sourceforge.net/services/buy/index.php _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
