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Search: Posts Made By: rupej
Forum: LIVE PLC Questions And Answers Yesterday, 11:49 AM
Replies: 10
Views: 120
Posted By rupej
^ I may be missing something but the part you...

^ I may be missing something but the part you linked to looks to be a device that interfaces the sensor to a PC or similar. I don't see anything about discrete I/O, nor could I find a wiring diagram...
Forum: LIVE PLC Questions And Answers August 13th, 2018, 12:51 PM
Replies: 7
Views: 298
Posted By rupej
I'm no fiber expert but it sounds like you may be...

I'm no fiber expert but it sounds like you may be getting BS'd?
Forum: LIVE PLC Questions And Answers August 13th, 2018, 12:39 PM
Replies: 17
Views: 392
Posted By rupej
This may be a stupid suggestion, but why not just...

This may be a stupid suggestion, but why not just leave all of the old PLC5 words as INTs instead of DINTs? I know DINTs are technically more efficient but we're talking microseconds here.
Forum: LIVE PLC Questions And Answers August 12th, 2018, 09:09 PM
Replies: 5
Views: 184
Posted By rupej
I know it doesn't help you right now, but...

I know it doesn't help you right now, but probably one of the reasons no one has a clue is because HART is a pretty old protocol, and one that seems to be going away.

I honestly can't remember...
Forum: LIVE PLC Questions And Answers August 10th, 2018, 09:07 PM
Replies: 4
Views: 226
Posted By rupej
I find that really surprising to hear you say...

I find that really surprising to hear you say that. The company I work for has been using them for about 15 years and I've yet to hear of a customer complaining. I also see them in hundreds of panels...
Forum: LIVE PLC Questions And Answers August 10th, 2018, 06:32 PM
Replies: 27
Views: 1,054
Posted By rupej
It's not illegal but probably not the best...

It's not illegal but probably not the best practice for your benefit. If you tell someone what their competitors are charging, they may beat the price by 5%, but if they didn't already know, they may...
Forum: LIVE PLC Questions And Answers August 10th, 2018, 06:26 PM
Replies: 15
Views: 884
Posted By rupej
I hear you, Peter. I'm trying to evolve...

I hear you, Peter.

I'm trying to evolve beyond Z-N tuning, but calculating models with DiffEq may be a long way off for me.

I'm really interesting in stepping into the Lambda method, as I've...
Forum: LIVE PLC Questions And Answers August 8th, 2018, 08:13 PM
Replies: 9
Views: 416
Posted By rupej
Always go with the existing scheme! What...

Always go with the existing scheme!

What gets weird if you're interfacing your own stuff with someone else's.... then who do you follow, your scheme or theirs? I go with mine usually :D
Forum: LIVE PLC Questions And Answers August 3rd, 2018, 07:13 PM
Replies: 9
Views: 657
Posted By rupej
Change order, unless it's an insignificant amount...

Change order, unless it's an insignificant amount of work/time to change.
Forum: LIVE PLC Questions And Answers August 1st, 2018, 08:40 PM
Replies: 8
Views: 385
Posted By rupej
Haha! Now quit trying to scare him. It definitely...

Haha! Now quit trying to scare him. It definitely gets way easier! :beerchug:
Forum: LIVE PLC Questions And Answers July 30th, 2018, 09:10 PM
Replies: 26
Views: 761
Posted By rupej
You need the HSC for the 2nd scenario. It comes...

You need the HSC for the 2nd scenario. It comes with the ML1400, why not use it for both and be good to go if anything ever changes?
Forum: LIVE PLC Questions And Answers July 29th, 2018, 03:37 PM
Replies: 18
Views: 485
Posted By rupej
I have an idea. How about just do it "without the...

I have an idea. How about just do it "without the bits" but don't give the drive a start command until the stop has been off for at least one scan. That way both bits can never be on at the same...
Forum: LIVE PLC Questions And Answers July 29th, 2018, 01:48 PM
Replies: 18
Views: 485
Posted By rupej
I don't have a manual handy, but are there status...

I don't have a manual handy, but are there status bits for "stopping" or "starting"? That would be the key to doing what you want.
Forum: LIVE PLC Questions And Answers July 29th, 2018, 12:24 PM
Replies: 18
Views: 485
Posted By rupej
Another option would be to set the stop mode to...

Another option would be to set the stop mode to coast instead of ramp. Then the active bit should instantly go low once a stop is asserted. Only downside is the increased amps if restarted again...
Forum: LIVE PLC Questions And Answers July 27th, 2018, 09:32 AM
Replies: 7
Views: 195
Posted By rupej
You still can't flip an image (or text) 90* after...

You still can't flip an image (or text) 90* after it's been placed on a display...
Forum: LIVE PLC Questions And Answers July 24th, 2018, 07:35 AM
Replies: 2
Views: 106
Posted By rupej
It's normal, but it should go away when you close...

It's normal, but it should go away when you close the information display. Does it?

I found it annoying regardless and just go with the "minutes" as the smallest time units these days.
Forum: LIVE PLC Questions And Answers July 19th, 2018, 07:18 PM
Replies: 98
Views: 8,413
Posted By rupej
Tesla, the Nissan Leaf, now GM's EV is going to...

Tesla, the Nissan Leaf, now GM's EV is going to be fully capable of self-driving. So why can't or won't they make a standard ICE car self-driving also? I don't see why it matters what makes the...
Forum: LIVE PLC Questions And Answers July 18th, 2018, 07:54 PM
Replies: 10
Views: 322
Posted By rupej
Sounds like you found the problem. But I have to...

Sounds like you found the problem. But I have to ask, why all the multiplexing of the produced/consume data? Why not just have each consumer get its own dedicated tag? That too would eliminate the...
Forum: LIVE PLC Questions And Answers July 17th, 2018, 07:08 PM
Replies: 5
Views: 614
Posted By rupej
Yeah, and even then it might not work. So you...

Yeah, and even then it might not work. So you pick a random tag to get the syntax right and retype the tag name that you want.
Forum: LIVE PLC Questions And Answers July 17th, 2018, 07:05 PM
Replies: 12
Views: 464
Posted By rupej
I'm a big fan of running a PID (or just P if you...

I'm a big fan of running a PID (or just P if you don't need super accurate control) on your controller, and using a PWM output to a standard zero-crossing SSR. 5Hz works very well for resolution and...
Forum: LIVE PLC Questions And Answers July 17th, 2018, 11:07 AM
Replies: 12
Views: 511
Posted By rupej
So if an unmanaged switch can handle unicast and...

So if an unmanaged switch can handle unicast and only direct traffic to the port it needs to go, and a managed switch still hits all ports when a device does broadcast, how is a managed switch any...
Forum: LIVE PLC Questions And Answers July 11th, 2018, 07:16 AM
Replies: 6
Views: 377
Posted By rupej
Definitely look at IO link if your processor can...

Definitely look at IO link if your processor can use it. IFM makes some cost-effective blocks also.
Forum: LIVE PLC Questions And Answers July 7th, 2018, 10:20 AM
Replies: 17
Views: 1,092
Posted By rupej
That's cool- I didn't know that was an...

That's cool- I didn't know that was an instruction in ladder. I'm guessing it increments once per scan?

Edit: Oh, I think I see. It calls the subroutine over and over until the loop is finished?
Forum: LIVE PLC Questions And Answers July 5th, 2018, 12:46 PM
Replies: 27
Views: 1,654
Posted By rupej
Ah I see, that makes sense then. In that case, my...

Ah I see, that makes sense then. In that case, my only suggestion would be to eliminate any unnecessary switches and use fiber to connect the remaining ones if the distance > 300 meters. Not sure if...
Forum: LIVE PLC Questions And Answers July 5th, 2018, 06:56 AM
Replies: 27
Views: 1,654
Posted By rupej
I don't think MicroLogix can be mapped as...

I don't think MicroLogix can be mapped as Ethernet I/O, but I've never tried...

One thing that may help is to set each MicroLogix to use a read MSG instead of the ControlLogix doing 35 writes.
Showing results 1 to 25 of 390

 
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