All of them are supposed to, but some aren't smart enough to turn on the binaries filters.
-- Service to my country? Been there, Done that, and I\'ve got my DD214 to prove it. Member of DAV #85. Michael A. Terrell Central Florida
This is exactly what I tried after getting feedback from this fourm. My problem is that the timer does not share a common ground with the circuit. The timer is hand-held with a 9vdc battery. I tried connecting the timer ground to the PLC ground but it does not activate the transistor. Here is the transistor I'm using:
What am I missing here?
Just to clarify, while the timer has an internal 9v battery, the output is 5vdc for 30ms. Also, I did not use a 1K resistor between the timer and the base.
Pretty much. And not so much the ISP - a lot of them contract out the news groups service.
-- I suppose... http://www.exit109.com/~jeremy/news/misplacedbin.html
-- Depending on how much current the timer\'s output can source, you may have opened the transistor\'s base-to-emitter junction. You almost always need that resistor in there to limit the base current to a safe value. Also, I downloaded the installation and wiring manual for the Millennium II (I couldn\'t find the one for the Millennium 3) at: http://www.crouzet-usa.com/downloads/millenium/Installation_and_wiring.pdf and on page 9 they show the various inputs available. The spec sheet for the Millennium 3 says that the digital inputs available are contact closure, NPN transistor, and PNP transistor, so I suspect the way they have them shown connected for the 2 is also how they should be connected to the 3, except that the 2 shows only PNPs. There is one interesting thing, though, and that\'s that with AC mains it looks like the only thing that\'s allowed is contact closure. Except maybe for that "XT20 local extension", whatever that is. (analog inputs, maybe?) Unfortunately, since you\'re posting to USENET through Google Groups, you don\'t have access to alt.binaries.schematics.electronic. (or _any_ binaries groups) So, if you could scan the page of the Millennium 3 manual showing the input connections to a web page and post a link to it that would be immensely helpful in figuring out what\'s going on. Also whether it\'s running off the mains or DC if it\'s like the 2.
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