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Search: Posts Made By: mk42
Forum: LIVE PLC Questions And Answers July 19th, 2018, 09:00 PM
Replies: 20
Views: 399
Posted By mk42
Admittedly, I haven't used a Micrologix before,...

Admittedly, I haven't used a Micrologix before, but I haven't cared about what kind of cable to use (patch vs crossover) since I started my current job (8 years). Auto MDI-X...
Forum: LIVE PLC Questions And Answers July 19th, 2018, 01:49 PM
Replies: 94
Views: 5,923
Posted By mk42
I was extremely interested in taking a course in...

I was extremely interested in taking a course in road design as an elective when I was in college. There are a lot of really interesting problems, like that one, and I'm curious how much of the...
Forum: LIVE PLC Questions And Answers July 19th, 2018, 12:21 PM
Replies: 3
Views: 147
Posted By mk42
Like Firejo said, in a perfect world where money...

Like Firejo said, in a perfect world where money isn't a concern, sure, an extra network would provide you some buffer.

In practice, it's a design call. You can usually make do without it. How...
Forum: LIVE PLC Questions And Answers July 19th, 2018, 12:16 PM
Replies: 16
Views: 626
Posted By mk42
In some systems (I know I've done it in TIA...

In some systems (I know I've done it in TIA Portal), you can declare constants, and give those constants names/comments. The nice thing about constants is they get inserted directly by the compiler,...
Forum: LIVE PLC Questions And Answers July 19th, 2018, 12:08 PM
Replies: 13
Views: 505
Posted By mk42
As far as I can tell, CodeMeter pretty much...

As far as I can tell, CodeMeter pretty much exists to enable extra licensing restrictions/copy protection (read: cause trouble). It isn't a huge surprise that it threw up a red flag, whether you...
Forum: LIVE PLC Questions And Answers July 19th, 2018, 10:00 AM
Replies: 6
Views: 119
Posted By mk42
I was going to say the exact same thing. The...

I was going to say the exact same thing. The 1200 supports modbus TCP natively, or Modbus RTU via a serial card card. Either way, there are built in instructions for them, and decent examples.
Forum: LIVE PLC Questions And Answers July 19th, 2018, 09:57 AM
Replies: 6
Views: 71
Posted By mk42
Simulators are generally pretty expensive, as...

Simulators are generally pretty expensive, as they are usually specialized niche product. $900 actually isn't that bad.

I agree with boneless, though, it'd probably be simpler to just get another...
Forum: LIVE PLC Questions And Answers July 19th, 2018, 09:53 AM
Replies: 16
Views: 626
Posted By mk42
I would agree with the advice here. No need for...

I would agree with the advice here. No need for the extra, simpler is better. With integers, it could allow you do to ranges, where it is active from greater than or equal to state 400 to less than...
Forum: LIVE PLC Questions And Answers July 19th, 2018, 08:51 AM
Replies: 1
Views: 56
Posted By mk42
I'm not sure if you can, which seems like a big...

I'm not sure if you can, which seems like a big oversight. The CM is generally used I think it took a couple revisions before you could view the web page over the CM/CP, could be a similar thing.
...
Forum: LIVE PLC Questions And Answers July 18th, 2018, 01:38 PM
Replies: 18
Views: 624
Posted By mk42
I think there are two styles to laying out a...

I think there are two styles to laying out a program:


What do I want to happen when the input is on? (lots of set/reset logic)
Under what conditions do I want this output on? (mostly coils)...
Forum: LIVE PLC Questions And Answers July 18th, 2018, 12:54 PM
Replies: 6
Views: 211
Posted By mk42
I'd look at IP65 rated switches, to avoid the...

I'd look at IP65 rated switches, to avoid the hassle of a random small panel. Something like this should be pretty resilient to dust, while also being rated to temps up to 70C.
...
Forum: LIVE PLC Questions And Answers July 17th, 2018, 01:21 PM
Replies: 9
Views: 287
Posted By mk42
When you say machine centers, do you mean a CNC,...

When you say machine centers, do you mean a CNC, or something like this: https://en.wikipedia.org/wiki/Motor_control_center

it is totally possible to do everything over Ethernet, if you have the...
Forum: LIVE PLC Questions And Answers July 17th, 2018, 01:16 PM
Replies: 12
Views: 418
Posted By mk42
Personally, my answer is this: managed switches...

Personally, my answer is this: managed switches give you plenty of fancy capability, but a significant portion of the time you don't need that. What you DO need is a way to find out what is going...
Forum: LIVE PLC Questions And Answers July 17th, 2018, 12:58 PM
Replies: 3
Views: 205
Posted By mk42
Yeah, that's usually the preferred way to do it. ...

Yeah, that's usually the preferred way to do it. I assumed you were trying to avoid using the built in feature, my bad
Forum: LIVE PLC Questions And Answers July 17th, 2018, 12:56 PM
Replies: 2
Views: 161
Posted By mk42
Generally, when an installer says that it has...

Generally, when an installer says that it has failed, and it ALSO provides a report to send to it's tech support group, that's where I start.

V15 installed fine for me :huh:
Forum: LIVE PLC Questions And Answers July 16th, 2018, 02:47 PM
Replies: 15
Views: 482
Posted By mk42
MQTT could be useful as part of a solution, but...

MQTT could be useful as part of a solution, but the actual protocol for the data only provides about 10% of the overall solution. The bigger issue is network isolation, and selecting an ethernet...
Forum: LIVE PLC Questions And Answers July 16th, 2018, 10:34 AM
Replies: 3
Views: 205
Posted By mk42
I've never used that brand, but you may be able...

I've never used that brand, but you may be able to do it without using the built in user functionality.

One way that I've seen this work is to have two pages, a password prompt screen and the...
Forum: LIVE PLC Questions And Answers July 16th, 2018, 10:28 AM
Replies: 15
Views: 482
Posted By mk42
I like this idea, but I'd step this up a notch...

I like this idea, but I'd step this up a notch and call for a firewall/security device instead of a layer 2 switch.

Firewall is connected to Plant A, Plant B, and the server. The server is set up...
Forum: LIVE PLC Questions And Answers July 16th, 2018, 08:58 AM
Replies: 15
Views: 482
Posted By mk42
That thought scares me, especially if they are...

That thought scares me, especially if they are different companies.

I would be concerned with the thought that if they have access to those tags, what other tags would they have access to? I'm...
Forum: LIVE PLC Questions And Answers July 12th, 2018, 11:35 AM
Replies: 5
Views: 207
Posted By mk42
The Comfort Panels from Siemens have supported...

The Comfort Panels from Siemens have supported OPC UA for a few years now, both as Client and as Server. Link to the product below, although it doesn't actually reference OPC UA anywhere.
...
Forum: LIVE PLC Questions And Answers July 2nd, 2018, 03:29 PM
Replies: 16
Views: 634
Posted By mk42
Personally, I wouldn't base an IIoT/edge...

Personally, I wouldn't base an IIoT/edge computing application on a serial interface. That just seems like the opposite of everything the movement stands for. Modbus RTU is the opposite of...
Forum: LIVE PLC Questions And Answers July 2nd, 2018, 09:04 AM
Replies: 35
Views: 1,807
Posted By mk42
Lets put it this way. The example that I always...

Lets put it this way. The example that I always hear from safety guys is a company getting in trouble because an operator/maintenance tech removed a machine guard without permission and then hurt...
Forum: LIVE PLC Questions And Answers July 2nd, 2018, 07:44 AM
Replies: 35
Views: 1,807
Posted By mk42
I think the standard in American courts is that...

I think the standard in American courts is that the designer is responsible for preventing obvious mis-use. Sometimes you can get away with warnings "don't put hand into business end of lawnmower"...
Forum: LIVE PLC Questions And Answers July 2nd, 2018, 07:39 AM
Replies: 94
Views: 5,923
Posted By mk42
I think this is a big part of it. My...

I think this is a big part of it. My understanding is that Tesla technically has two lines. They bought and repurposed an old GM facility, and the existing line was repurposed for the Model S & X...
Forum: LIVE PLC Questions And Answers July 2nd, 2018, 07:29 AM
Replies: 94
Views: 5,923
Posted By mk42
Interestingly, from what I've read, the limiting...

Interestingly, from what I've read, the limiting factor on the Tesla isn't the motors, it's how much juice the batteries can push out without overheating.

I was reading an article about a new...
Showing results 1 to 25 of 500

 
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