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Search: Posts Made By: rpoet
Forum: LIVE PLC Questions And Answers April 18th, 2018, 07:01 AM
Replies: 2
Views: 99
Posted By rpoet
Melsec V2.4

Can anyone point me toward a place to get a copy of Mitsubishi's Melsec V2.4? The local Mitsi dealer has been no help.

I have a friend who has an old PLC that has dumped its program, thanks to a...
Forum: LIVE PLC Questions And Answers February 16th, 2018, 09:42 PM
Replies: 0
Views: 119
Posted By rpoet
Electroless tin plating

I used some electroless tin plating solution to tin plate the copper traces on a PCB that I made in a class in college, years ago. The stuff worked great... on copper. Anyone have any idea if it...
Forum: LIVE PLC Questions And Answers December 20th, 2017, 10:23 PM
Replies: 5
Views: 440
Posted By rpoet
You may or may not need an isolator when sharing...

You may or may not need an isolator when sharing a current signal. It all depends on if the various devices share a common ground reference, and have isolated inputs. There are MANY threads on this...
Forum: LIVE PLC Questions And Answers December 7th, 2017, 07:40 AM
Replies: 4
Views: 267
Posted By rpoet
Since you are already using AutomationDirect...

Since you are already using AutomationDirect products:
...
Forum: LIVE PLC Questions And Answers November 15th, 2017, 11:51 AM
Replies: 2
Views: 429
Posted By rpoet
And we have a winner! Thanks for the help. ...

And we have a winner! Thanks for the help.


-rpoet
Forum: LIVE PLC Questions And Answers November 15th, 2017, 08:14 AM
Replies: 2
Views: 429
Posted By rpoet
Pushbutton-like "button"

All,
I''m on the hunt for a device that looks like a 30mm momentary pushbutton, but instead of contact block(s) behind the panel, I need an "actuator rod" to press another switch behind the panel.
...
Forum: LIVE PLC Questions And Answers November 3rd, 2017, 08:36 AM
Replies: 21
Views: 897
Posted By rpoet
Touché, good sir. -rpoet

Touché, good sir.


-rpoet
Forum: LIVE PLC Questions And Answers October 26th, 2017, 08:49 AM
Replies: 21
Views: 897
Posted By rpoet
There are two types of countries in the world: ...

There are two types of countries in the world:
1) Countries that use the metric system
2) Countries that have landed men on the moon

:lolis:


-rpoet
Forum: LIVE PLC Questions And Answers October 6th, 2017, 07:51 AM
Replies: 11
Views: 756
Posted By rpoet
Code-wise, I completely agree. Practically...

Code-wise, I completely agree. Practically however, a two-wire ferrule solves that problem (assuming a cage clamp design). Sometimes, you have to make it work when retrofitting machinery.

...
Forum: LIVE PLC Questions And Answers October 3rd, 2017, 09:06 PM
Replies: 4
Views: 606
Posted By rpoet
What is that input coming from? Can the device...

What is that input coming from? Can the device you're monitoring create an inductive spike when it turns off? Can you use an interposing relay on that input?

A properly rated MOV in parallel...
Forum: LIVE PLC Questions And Answers September 14th, 2017, 06:39 AM
Replies: 10
Views: 775
Posted By rpoet
Serhioromano: What jraef and I are...

Serhioromano:

What jraef and I are suggesting is to connect the 0-10V signals from the DMX ---> Analog converter to analog inputs on your PLC. Once you have those value in your PLC, you can...
Forum: LIVE PLC Questions And Answers September 13th, 2017, 06:58 AM
Replies: 10
Views: 775
Posted By rpoet
Thank you, jraef. This is exactly the approach I...

Thank you, jraef. This is exactly the approach I had in mind and was trying to suggest. I really wish more PLC vendors supported DMX natively. Beckhoff does, but they tend to be overkill for many...
Forum: LIVE PLC Questions And Answers September 13th, 2017, 06:55 AM
Replies: 10
Views: 775
Posted By rpoet
Here we go again... An Arduino is a nice...

Here we go again...

An Arduino is a nice toy, but is in no way suited to operating in an industrial control panel. It's not hardened, rugged enough, nor does it have suitable I/O connectors for...
Forum: LIVE PLC Questions And Answers September 12th, 2017, 09:12 AM
Replies: 10
Views: 775
Posted By rpoet
You don't need a card per drive. The link I sent...

You don't need a card per drive. The link I sent you has an 8-channel card, and a 24-channel card. That will give you setpoints for 8 or 24 drives, respectively.

If you need to switch control...
Forum: LIVE PLC Questions And Answers September 11th, 2017, 09:35 AM
Replies: 10
Views: 775
Posted By rpoet
Since no one else has commented, I'll jump in: ...

Since no one else has commented, I'll jump in:
There do exist DMX ---> MODBUS RTU modules, but they're expensive, and I've had trouble with vendors even emailing me back re. product inquiries.
...
Forum: LIVE PLC Questions And Answers September 1st, 2017, 02:13 PM
Replies: 8
Views: 756
Posted By rpoet
If you want to connect your PLC to your WiFi...

If you want to connect your PLC to your WiFi network (assuming your PLC has an Ethernet port) get on of these, and set it up in Bridge mode:
...
Forum: LIVE PLC Questions And Answers July 31st, 2017, 06:48 PM
Replies: 21
Views: 1,622
Posted By rpoet
Schematics for the equipment I design and build...

Schematics for the equipment I design and build almost always span multiple pages, even if the gear is only a single cabinet (we like to densely populate our cabinets).

To make it easier to...
Forum: LIVE PLC Questions And Answers July 31st, 2017, 07:22 AM
Replies: 7
Views: 841
Posted By rpoet
I use short lengths of flex conduit to run...

I use short lengths of flex conduit to run between the back of the enclosure door and the panel:
...
Forum: LIVE PLC Questions And Answers June 10th, 2017, 08:11 PM
Replies: 4
Views: 929
Posted By rpoet
The Pi has an Ethernet port. Why not add an...

The Pi has an Ethernet port. Why not add an H0-ECOM100 card (if you don't have one already) to the DL-06 and communicate with TCP-IP?


-rpoet
Forum: LIVE PLC Questions And Answers April 30th, 2017, 10:12 PM
Replies: 32
Views: 2,794
Posted By rpoet
My title is "Automation & Electrical Designer." ...

My title is "Automation & Electrical Designer."

The last two places I've worked wanted to put "Engineer" in my title, and I politely refused. Not because I don't do any engineering in my...
Forum: LIVE PLC Questions And Answers March 13th, 2017, 06:36 AM
Replies: 3
Views: 1,119
Posted By rpoet
I just read that thread, and the engineering...

I just read that thread, and the engineering rationale still makes no sense to me. Either the current-limiting overcurrent protection limits the let-through current, or it doesn't. I see plenty of...
Forum: LIVE PLC Questions And Answers March 9th, 2017, 10:39 PM
Replies: 13
Views: 1,234
Posted By rpoet
Call IceQube, and ask for Tom Churchel. ...

Call IceQube, and ask for Tom Churchel.

http://www.iceqube.com/

He's taken very good care of us on several recent projects; they built an AC unit for a project last summer in a remarkably...
Forum: LIVE PLC Questions And Answers March 9th, 2017, 01:31 PM
Replies: 3
Views: 1,119
Posted By rpoet
SCCR rating, according to UL508A

I attended a workshop on UL 508A-compliant panel design yesterday, and now I'm even more confused regarding designing for a needed SCCR than I was before.

What I understand :
As long as you use...
Forum: LIVE PLC Questions And Answers January 14th, 2017, 10:48 PM
Replies: 15
Views: 2,078
Posted By rpoet
These look an awful lot like the ones...

These look an awful lot like the ones AutomationDirect sells. Probably a private-label arrangement.

Now if I could just figure out who makes AD's terminal blocks for them...



-rpoet
Forum: LIVE PLC Questions And Answers December 22nd, 2016, 12:21 PM
Replies: 5
Views: 1,738
Posted By rpoet
Funny - I clicked on the video on a whim, and I...

Funny - I clicked on the video on a whim, and I realized I'd seen this stuff before, but never had a use for it. Until this morning.

I'm designing a panel right now that will use this stuff. ...
Showing results 1 to 25 of 447

 
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