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Search: Posts Made By: mk42
Forum: LIVE PLC Questions And Answers February 20th, 2020, 02:29 PM
Replies: 3
Views: 183
Posted By mk42
I think I've seen Signal Strength from readers,...

I think I've seen Signal Strength from readers, but that's not necessarily a good proxy for distance.


If you want a good distance measurement, you can look at something called RTLS, but it's a...
Forum: LIVE PLC Questions And Answers February 20th, 2020, 08:43 AM
Replies: 15
Views: 627
Posted By mk42
This is definitely true. I won't open many doors...

This is definitely true. I won't open many doors inside controls, but it means you have a lot of other options.
Forum: LIVE PLC Questions And Answers February 19th, 2020, 10:50 AM
Replies: 15
Views: 627
Posted By mk42
Huh, good to know! I've never been onsite at a...

Huh, good to know! I've never been onsite at a GM plant.

I've been in a Chrysler plant a couple times, helping out someone halfway down the contractor chain. It felt like I got snuck in, I have...
Forum: LIVE PLC Questions And Answers February 19th, 2020, 09:33 AM
Replies: 15
Views: 627
Posted By mk42
In the PLC world, I've never ran into a situation...

In the PLC world, I've never ran into a situation where certificates were valued, except possibly when they were safety standards related.
The knowledge that you need to pass the test definitely has...
Forum: LIVE PLC Questions And Answers February 18th, 2020, 09:08 PM
Replies: 37
Views: 1,771
Posted By mk42
Not a lawyer, but: If you call it a time...

Not a lawyer, but:

If you call it a time bomb, or add it in AFTER you run into trouble, or you're sneaky about it, you're gonna have a bad time. Definitely if you do more than one of those at the...
Forum: LIVE PLC Questions And Answers February 18th, 2020, 08:53 PM
Replies: 13
Views: 532
Posted By mk42
This is why the US automotive industry requires...

This is why the US automotive industry requires an extra contact that essentially reads true when the estop is correctly assembled.


Everywhere else, the best practice is to check all safety...
Forum: LIVE PLC Questions And Answers February 16th, 2020, 08:08 PM
Replies: 7
Views: 315
Posted By mk42
From what I've heard, the AB emulator has a lot...

From what I've heard, the AB emulator has a lot of gotchas. It only supports certain SW/FW versions (often a couple versions behind the latest major release), and what I recall is that you have to...
Forum: LIVE PLC Questions And Answers February 15th, 2020, 03:17 PM
Replies: 7
Views: 295
Posted By mk42
Different brands of software sometimes don't play...

Different brands of software sometimes don't play nice with COM ports (serial) because Windows only lets one use it at a time.


I've never heard of a case where someone had brands interfering...
Forum: LIVE PLC Questions And Answers February 15th, 2020, 03:07 PM
Replies: 32
Views: 1,614
Posted By mk42
In europe? My understanding is they are done for...

In europe? My understanding is they are done for every single project for every single machine. It's a legal requirement.

In the US? They are done or required by companies who want to have legal...
Forum: LIVE PLC Questions And Answers February 14th, 2020, 11:44 AM
Replies: 16
Views: 754
Posted By mk42
In most programming environments, that's very...

In most programming environments, that's very common. The number of levels deep you go is often called the "nesting depth".
Forum: LIVE PLC Questions And Answers February 9th, 2020, 11:27 PM
Replies: 32
Views: 8,752
Posted By mk42
You probably want to ask that again in its own...

You probably want to ask that again in its own thread, you'll likely get more responses.
Forum: LIVE PLC Questions And Answers February 6th, 2020, 11:33 AM
Replies: 48
Views: 2,680
Posted By mk42
There are a few companies that do, I think....

There are a few companies that do, I think. Wonderware was the first I had heard of, they grab the tags straight out of the PLC.


Appreciate the info tho, for sure :)
Forum: LIVE PLC Questions And Answers February 6th, 2020, 10:40 AM
Replies: 48
Views: 2,680
Posted By mk42
I'm sure your local Siemens guy would love a...

I'm sure your local Siemens guy would love a call. They even have a tool that could do part of the conversion for you. It isn't a GREAT conversion, but its a nice place to start.



Here in the...
Forum: LIVE PLC Questions And Answers February 5th, 2020, 09:22 PM
Replies: 7
Views: 513
Posted By mk42
You can change how much buffer is stored (and...

You can change how much buffer is stored (and choose separate values for retentive vs non-retentive) in the block properties. The Portal defaults to 100 bytes, though.
Forum: LIVE PLC Questions And Answers January 28th, 2020, 07:34 PM
Replies: 6
Views: 249
Posted By mk42
Does AB have an alarming instruction, or do you...

Does AB have an alarming instruction, or do you typically just have a tag in the HMI that reads your string directly?


I mostly work on Siemens stuff, and I'm always trying to make sense of the...
Forum: LIVE PLC Questions And Answers January 28th, 2020, 07:31 PM
Replies: 11
Views: 405
Posted By mk42
https://www.hilscher.com/products/product-groups/g...

https://www.hilscher.com/products/product-groups/gateways/for-the-control-cabinet-ip20/fieldbus-gateways/nt-100-re-enpnmomb/


How about this then?
Forum: LIVE PLC Questions And Answers January 28th, 2020, 10:48 AM
Replies: 8
Views: 300
Posted By mk42
Fun fact, if you need to go bigger (or smaller)...

Fun fact, if you need to go bigger (or smaller) the 1500 also supports the LTIME data type for timers, which counts in nanoseconds and goes up to 106751 days. I won't live long enough to see an...
Forum: LIVE PLC Questions And Answers January 26th, 2020, 11:30 AM
Replies: 5
Views: 312
Posted By mk42
Yeah, the HMI cross reference is better than it...

Yeah, the HMI cross reference is better than it used to be. I swear it was amazing in like 10.5 or 11, went away, and then came back again recently.


If you have an external HMI (separate portal...
Forum: LIVE PLC Questions And Answers January 26th, 2020, 11:26 AM
Replies: 9
Views: 624
Posted By mk42
I didn't know Codesys supported PN, that's...

I didn't know Codesys supported PN, that's awesome info, thanks!
Forum: LIVE PLC Questions And Answers January 25th, 2020, 10:25 PM
Replies: 5
Views: 312
Posted By mk42
In general, people recommend against writing...

In general, people recommend against writing directly to the instance of an FB/instruction. The biggest reason is that if the value appears out of nowhere, and especially if it doesn't show up in...
Forum: LIVE PLC Questions And Answers January 24th, 2020, 08:05 AM
Replies: 9
Views: 624
Posted By mk42
Proneta has expanded a lot since it started out...

Proneta has expanded a lot since it started out with just ET200sp, it might work.



If it doesn't work, you can try Profinet Commander, from PI. You'd need the $600 pay version, though, to have...
Forum: LIVE PLC Questions And Answers January 23rd, 2020, 12:15 PM
Replies: 5
Views: 510
Posted By mk42
The result might be in the "Output" window which...

The result might be in the "Output" window which is often sort of hidden in WinCC Flex, from what I remember. It's been a while since I worked with Flex, so I can't recall if there is a popup once it...
Forum: LIVE PLC Questions And Answers January 23rd, 2020, 07:53 AM
Replies: 15
Views: 1,014
Posted By mk42
I don't think there is a "Compress" function like...

I don't think there is a "Compress" function like there is in an S7-400.


You could potentially try factory resetting the PLC and downloading again, but I'm not sure how much it would help.

...
Forum: LIVE PLC Questions And Answers January 22nd, 2020, 08:20 AM
Replies: 5
Views: 510
Posted By mk42
In theory, you should be able to download to an...

In theory, you should be able to download to an HMI remotely, at least depending which of the communication drivers you used (Ethernet, i think). I'm assuming the output window actually had some...
Forum: LIVE PLC Questions And Answers January 21st, 2020, 08:47 AM
Replies: 6
Views: 516
Posted By mk42
It might depend slightly what version of WinCC...

It might depend slightly what version of WinCC you are using to program the (obsolete) panel you listed, but the I've seen Multi-panels and Comfort panels with a variety of options to make the tags...
Showing results 1 to 25 of 500

 
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