On Mon, Mar 23, 2015 at 5:41 AM, Erik Christiansen <dva...@internode.on.net> wrote:
> On 23.03.15 05:07, Mark Wendt wrote: > > Slightly off-tangent here. There's an explanation line in the second > > paragraph of 1.1 Basic Concepts: > > > > "If you are a logic kinda guy the line says If B0 is off AND either B1 OR > > Q0 is on then coil Q0 is on." > > > > Shouldn't that be: > > > > "If you are a logic kinda guy the line says If B0 is "on" AND either B1 > OR > > Q0 is on then coil Q0 is on." > > > > According to the paragraph above this, B0 is normally closed. With B0 > > "off", or open, and either B1 or Q0 is on, then coil Q0 should be off. > > Though I am "a logic kinda guy", not a ladder wielder, I interpret the > "off" to refer to the B0 coil, not one of its contacts, which may be NC > or NO. That makes a NC contact an inverted output which is a 1 when the > input is 0. > > Does that realign the planets? > > Erik > I'm a comp sci kinda guy, so I'm familiar with logic too. ;-) According to the description, B0 and B1 are switches, not relays. Q0 is the relay. And it also says in the description B0 is normally closed. So, with that in mind, is "normally closed" off, and "open" on? Mark ------------------------------------------------------------------------------ Dive into the World of Parallel Programming The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
