, 23 Mar 2015 21:59:04 -0600
From: Gregg Eshelman g_ala...@yahoo.com
Subject: Re: [Emc-users] Ladder logic documentation [Was: Simple,
adjustable timer]
To: emc-users@lists.sourceforge.net
Message-ID: 5510e108.2010...@yahoo.com
Content-Type: text/plain; charset=utf-8; format=flowed
On 3/23
I managed to get lost in this thread, what ladder component is in
question here?
I rely heavily on Classicladder in my machines, averaging over 200 rungs
per machine, and am curious as to what may be possibly wrong.
Thanks
Rick
On 3/23/2015 8:33 AM, Mark Wendt wrote:
On Mon, Mar 23,
http://www.vdwalle.com/Norte/Classic%20Ladder%20Examples.html
Section 1.1 Basic Ladder
Basic Concepts
On Mon, Mar 23, 2015 at 8:52 AM, Rick r...@superiorroll.com wrote:
I managed to get lost in this thread, what ladder component is in
question here?
I rely heavily on Classicladder in my
On 23.03.15 08:33, Mark Wendt wrote:
So, following that logic, off is on, and on is off. ;-)
Taking such facetiousness at face value, I think the real situation is:
OFF is on and off, and ON is on and off
where OFF/ON is input, and on/off is output, with no and nc contacts
simply being the
On 23.03.15 05:49, Mark Wendt wrote:
On Mon, Mar 23, 2015 at 5:41 AM, Erik Christiansen wrote:
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
On 23.03.15 07:30, Mark Wendt wrote:
On Mon, Mar 23, 2015 at 7:17 AM, Erik Christiansen wrote:
Try it as I describe, and the diagram and text should align without any
clashing of mental gears.
The logic still doesn't match up with the simple switch diagram.
And yet you show yourself that
On Mon, Mar 23, 2015 at 8:09 AM, Erik Christiansen dva...@internode.on.net
wrote:
On 23.03.15 07:30, Mark Wendt wrote:
On Mon, Mar 23, 2015 at 7:17 AM, Erik Christiansen wrote:
Try it as I describe, and the diagram and text should align without any
clashing of mental gears.
The
It can actually be a lot more complicated than that now.The newer
PLCs can have multiple outputs in one rung and they don't have to be
driven by
a singular logical result. They can also have embedded numerical
comparisons, one shot / edge instructions, counters and timers.
The logic can
The example is properly described.
The example shows a normally closed contact and then two parallel
contacts next which are normally open. The output coil drives one of
the parallel contacts so the logic line is basically a
start/stop logic rung with a seal in contact.
In the old PLC
On Mon, Mar 23, 2015 at 7:17 AM, Erik Christiansen dva...@internode.on.net
wrote:
On 23.03.15 05:49, Mark Wendt wrote:
On Mon, Mar 23, 2015 at 5:41 AM, Erik Christiansen wrote:
Though I am a logic kinda guy, not a ladder wielder, I interpret
the off to refer to the B0 coil, not one of
On 3/23/2015 7:37 AM, Erik Christiansen wrote:
On 23.03.15 08:33, Mark Wendt wrote:
So, following that logic, off is on, and on is off. ;-)
Taking such facetiousness at face value, I think the real situation is:
OFF is on and off, and ON is on and off
where OFF/ON is input, and on/off is
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