You are not registered yet. Please click here to register!


 
 
plc storereviewsdownloads
This board is for PLC Related Q&A ONLY. Please DON'T use it for advertising, etc.
 
Try our online PLC Simulator- FREE.  Click here now to try it.

New Here? Please read this important info!!!


Go Back   PLCS.net - Interactive Q & A > Search Forums

Showing results 1 to 25 of 500
Search took 0.09 seconds.
Search: Posts Made By: drbitboy
Forum: LIVE PLC Questions And Answers Yesterday, 06:15 PM
Replies: 22
Views: 786
Posted By drbitboy
Thanks, that confirms my empirical conclusion.

Thanks, that confirms my empirical conclusion.
Forum: LIVE PLC Questions And Answers Yesterday, 05:34 PM
Replies: 33
Views: 2,892
Posted By drbitboy
That is my favorite too, and a very similar form...

That is my favorite too, and a very similar form is in that alternator PDF.

Note that it is essentially a form of the Start/Stop Circuit pattern; it can also be seen as a combination of the...
Forum: LIVE PLC Questions And Answers Yesterday, 05:30 PM
Replies: 12
Views: 692
Posted By drbitboy
I don't think that is what the documentation...

I don't think that is what the documentation states about PID B. I think it rather states that a proportional response is not triggered by a change in setpoint, which means it is triggered by...
Forum: LIVE PLC Questions And Answers Yesterday, 05:09 PM
Replies: 22
Views: 786
Posted By drbitboy
Yes, because we need to think about digital PLCs...

Yes, because we need to think about digital PLCs as being devices that change over time.


The problem is that our code (your code, my code, perhaps @Rob...'s code*) uses the expression [mb0]...
Forum: LIVE PLC Questions And Answers Yesterday, 02:57 PM
Replies: 22
Views: 786
Posted By drbitboy
Actually, that code does not work: see the...

Actually, that code does not work: see the red-circles in the image below.

That said, it is close to working and the fix is trivial.63206
Forum: LIVE PLC Questions And Answers Yesterday, 02:35 PM
Replies: 4
Views: 296
Posted By drbitboy
Yes, well a list of the permutation of 12 bits...

Yes, well a list of the permutation of 12 bits has 4096 elements, so that is a non-starter, unless you generate it programmatically.

Why not use the array of bits to choose which messages to...
Forum: LIVE PLC Questions And Answers Yesterday, 12:56 PM
Replies: 21
L5x
Views: 14,071
Posted By drbitboy
:snort:

:snort:
Forum: LIVE PLC Questions And Answers October 3rd, 2022, 05:44 PM
Replies: 4
Views: 296
Posted By drbitboy
what text do you want to display when there is...

what text do you want to display when there is more than one alarm active at the same time?
Forum: LIVE PLC Questions And Answers October 3rd, 2022, 03:51 PM
Replies: 12
Views: 692
Posted By drbitboy
so there is some lag but probably not much dead...

so there is some lag but probably not much dead time involved.

If it was dead time, then adding some D action might (might) help, but not if the CV (PID output, Controlled Value) is saturated.
...
Forum: LIVE PLC Questions And Answers October 3rd, 2022, 02:15 PM
Replies: 22
Views: 786
Posted By drbitboy
@Rob...'s code works: 63189

@Rob...'s code works:

63189
Forum: LIVE PLC Questions And Answers October 3rd, 2022, 01:36 PM
Replies: 22
Views: 786
Posted By drbitboy
Show your code (screen shot via [Prnt/Sys Req],...

Show your code (screen shot via [Prnt/Sys Req], past into [Paint], save as PNG, attach via https://www.plctalk.net/qanda/images/editor/attach.gif button in [Go Advanced] posting tool in this thread;...
Forum: LIVE PLC Questions And Answers October 2nd, 2022, 10:02 PM
Replies: 22
Views: 786
Posted By drbitboy
+1

+1
Forum: LIVE PLC Questions And Answers October 2nd, 2022, 10:01 PM
Replies: 22
Views: 786
Posted By drbitboy
+1

+1
Forum: LIVE PLC Questions And Answers October 1st, 2022, 08:22 PM
Replies: 33
Views: 2,892
Posted By drbitboy
Yah seriously, people don't even bother to search...

Yah seriously, people don't even bother to search for "alternator" or "toggle" or "flip flop" in this forum first.

...
Forum: LIVE PLC Questions And Answers October 1st, 2022, 06:24 PM
Replies: 33
Views: 2,892
Posted By drbitboy
anyway, monkey business like those JMPs is why...

anyway, monkey business like those JMPs is why the 2x2 XOR construction seems so much better to me. Or even this:63183
Forum: LIVE PLC Questions And Answers October 1st, 2022, 06:12 PM
Replies: 33
Views: 2,892
Posted By drbitboy
Wow, I stand corrected. Is there no end...

Wow, I stand corrected.


Is there no end to the minutiae of this industry?
Forum: LIVE PLC Questions And Answers October 1st, 2022, 05:40 PM
Replies: 8
Views: 569
Posted By drbitboy
That's odd. Maybe RSLogix maintains the...

That's odd. Maybe RSLogix maintains the configuration in (via?) that rung that it creates and the Data File it uses to feed it. If that is the case, I suggest you ensure what that created rung does...
Forum: LIVE PLC Questions And Answers October 1st, 2022, 05:32 PM
Replies: 33
Views: 2,892
Posted By drbitboy
The second JMP is not necessary. [Edit: maybe]

The second JMP is not necessary. [Edit: maybe]
Forum: LIVE PLC Questions And Answers October 1st, 2022, 01:14 AM
Replies: 8
Views: 569
Posted By drbitboy
SCP is different than configuration. Can...

SCP is different than configuration.


Can you post a screenshot or PDF of what your FIL (FLL?) instructions look like?


If the created rung duplicates what your FIL instructions do, then you...
Forum: LIVE PLC Questions And Answers September 30th, 2022, 08:32 PM
Replies: 16
Views: 941
Posted By drbitboy
Yes, the 1200 has only RS-232. But...

Yes, the 1200 has only RS-232.


But according to the SureServo document, its connector may have both RS-485 and RS-232 pins (including some that serve both!?), and those SureServo RS-485 pins are...
Forum: LIVE PLC Questions And Answers September 30th, 2022, 03:36 PM
Replies: 16
Views: 941
Posted By drbitboy
nice. Be careful with the 1200 pinout...

nice.

Be careful with the 1200 pinout (https://literature.rockwellautomation.com/idc/groups/literature/documents/um/1762-um001_-en-p.pdf#G8.1042736), RS-485 signals do not play well with RS-232,...
Forum: LIVE PLC Questions And Answers September 30th, 2022, 03:22 PM
Replies: 2
Views: 471
Posted By drbitboy
:lolis: A scope! A scope! My kingdom...

:lolis:


A scope! A scope! My kingdom for a scope!
Forum: LIVE PLC Questions And Answers September 30th, 2022, 03:20 PM
Replies: 10
Views: 650
Posted By drbitboy
:heh:

:heh:
Forum: LIVE PLC Questions And Answers September 30th, 2022, 01:31 PM
Replies: 8
Views: 569
Posted By drbitboy
I am only guessing, but it looks like the rung to...

I am only guessing, but it looks like the rung to be inserted is what actually downloads the "configuration file" (Data File N13) into the card itself, and it performs that download only on the first...
Forum: LIVE PLC Questions And Answers September 30th, 2022, 12:56 PM
Replies: 16
Views: 941
Posted By drbitboy
https://cdn.automationdirect.com/static/manuals/su...

https://cdn.automationdirect.com/static/manuals/sureservomanual/sureservomanual.pdf#page=63

If that is close to the right manual, then @OkiePC is right and it's only the connector that the...
Showing results 1 to 25 of 500

 
Forum Jump

All times are GMT -4. The time now is 07:45 AM.


.