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Search: Posts Made By: mk42
Forum: LIVE PLC Questions And Answers May 5th, 2021, 09:14 AM
Replies: 10
Views: 705
Posted By mk42
I've heard "live man switch" and "3 position...

I've heard "live man switch" and "3 position enable switch" as well.
Forum: LIVE PLC Questions And Answers May 4th, 2021, 09:44 PM
Replies: 19
Views: 753
Posted By mk42
In your defense, WinCC Professional IS part of...

In your defense, WinCC Professional IS part of TIA Portal. it just so happens that it is based on WinCC v7, and so we're all guessing which one it takes after.
Forum: LIVE PLC Questions And Answers May 4th, 2021, 02:34 PM
Replies: 3
Views: 233
Posted By mk42
My understanding is that WinCC Professional V16...

My understanding is that WinCC Professional V16 requires SQL 2016. My guess is an older Portal version (V15) wouldn't like a newer SQL version (2019).


I'd recommend calling tech support to see...
Forum: LIVE PLC Questions And Answers May 3rd, 2021, 09:28 AM
Replies: 2
Views: 717
Posted By mk42
I think the part that warrants significant...

I think the part that warrants significant attention is that Siemens has more or less said the S7-300 & ET200M will be phased out Oct 1, 2023, and are therefore encouraging users to switch to ET200SP...
Forum: LIVE PLC Questions And Answers May 3rd, 2021, 09:22 AM
Replies: 3
Views: 391
Posted By mk42
In my experience, you still need to adapt it for...

In my experience, you still need to adapt it for system instructions and all non-local tags, but it's much easier than the alternative.
Forum: LIVE PLC Questions And Answers April 29th, 2021, 04:20 PM
Replies: 3
Views: 321
Posted By mk42
Can it be done? sure. Is it easy? not exactly. ...

Can it be done? sure. Is it easy? not exactly. At the base, some logic will translate over (contacts and coils are contacts and coils), but most system instructions will require complete reworking....
Forum: LIVE PLC Questions And Answers April 29th, 2021, 10:14 AM
Replies: 3
Views: 379
Posted By mk42
Maybe I'm missing something. What do you need an...

Maybe I'm missing something. What do you need an EDS file for with Modbus communications?
Forum: LIVE PLC Questions And Answers April 27th, 2021, 03:05 PM
Replies: 4
Views: 393
Posted By mk42
The only thing magic about the USB stick you get...

The only thing magic about the USB stick you get from Siemens is that they have the license info printed on the side, and that last I saw the license drives were smaller than any USB stick you could...
Forum: LIVE PLC Questions And Answers April 27th, 2021, 07:54 AM
Replies: 4
Views: 393
Posted By mk42
You don't even need a special Siemens USB, you...

You don't even need a special Siemens USB, you can use anything.
Forum: LIVE PLC Questions And Answers April 23rd, 2021, 03:07 PM
Replies: 9
Views: 691
Posted By mk42
The 1500 has the concept of pointers for flexible...

The 1500 has the concept of pointers for flexible data access, but not hard links between tags/DBs.

Hypothetically, you could do it if you manage the HMI data transfer, where the data is copied...
Forum: LIVE PLC Questions And Answers April 23rd, 2021, 10:35 AM
Replies: 9
Views: 691
Posted By mk42
That seems like a crazy communications driver...

That seems like a crazy communications driver limitation. Does IFIX have the option of using OPC UA? If so you can use the OPC UA server on the PLC and call it good (license required, but probably...
Forum: LIVE PLC Questions And Answers April 22nd, 2021, 04:33 PM
Replies: 9
Views: 784
Posted By mk42
Technology objects are one way to program...

Technology objects are one way to program motion/drive commands, often considered easier than other methods. If you don't know what they are, you probably didn't use them.


I'm going to circle...
Forum: LIVE PLC Questions And Answers April 22nd, 2021, 09:44 AM
Replies: 9
Views: 784
Posted By mk42
There can only be one motion cycle time, and it...

There can only be one motion cycle time, and it is almost always 1, or a multiple of 2. Might want to double check that. If there are motion TOs, look at the properties of the MC_Servo OB.


...
Forum: LIVE PLC Questions And Answers April 21st, 2021, 03:29 PM
Replies: 9
Views: 784
Posted By mk42
Not sure this is the issue, but: If...

Not sure this is the issue, but:



If you are using technology objects in a 1510/1512, the default motion cycle is much faster than actually feasible for the CPU. You need to up it from 1ms to...
Forum: LIVE PLC Questions And Answers April 20th, 2021, 09:25 AM
Replies: 11
Views: 826
Posted By mk42
To be clear: the advantage of using the suffix...

To be clear: the advantage of using the suffix naming is you don't have to track which ones are in use, because they are all separate. There's not really much advantage to try to lump them all...
Forum: LIVE PLC Questions And Answers April 20th, 2021, 09:22 AM
Replies: 11
Views: 826
Posted By mk42
I basically do the same thing as Jesper, it's...

I basically do the same thing as Jesper, it's always made sense to me.



I also want to recommend that a big part of the best practice is using tags local to an FB as much as possible. ONS bits...
Forum: LIVE PLC Questions And Answers April 16th, 2021, 12:34 PM
Replies: 14
Views: 1,124
Posted By mk42
Officially, I think PN uses a different standard...

Officially, I think PN uses a different standard than Cat5/6/whatever to approve cables (because of course they do), but it's still an ethernet cable. Same pinouts, etc. Note that PN cables are...
Forum: LIVE PLC Questions And Answers April 15th, 2021, 03:10 PM
Replies: 9
Views: 481
Posted By mk42
Seems unlikely that they'd match, but anything is...

Seems unlikely that they'd match, but anything is possible.



The columns for the test trace I just created in TIA were sample number, timestamp, tag a, tag b, tag c. Sample number increments...
Forum: LIVE PLC Questions And Answers April 15th, 2021, 06:09 AM
Replies: 9
Views: 481
Posted By mk42
The PLC Trace function inside TIA exports as a...

The PLC Trace function inside TIA exports as a ttrecx by default, but CSV is an option as well. The ttrecx, at first glance, seems to be a wacky XML file full of binary data, which includes the...
Forum: LIVE PLC Questions And Answers April 13th, 2021, 08:49 AM
Replies: 4
Views: 344
Posted By mk42
Temp addresses are local to the code block...

Temp addresses are local to the code block (OB/FB/FC), and not stored in a DB anywhere.


I think it would be addressed as L0.2, if I recall.
Forum: LIVE PLC Questions And Answers April 12th, 2021, 09:57 AM
Replies: 9
Views: 787
Posted By mk42
Why do you ask? Is there a certain feature of 64...

Why do you ask? Is there a certain feature of 64 bit processors that you're looking for, or do you just want 64 bit math? Or are you purely curious, because KNOWLEDGE IS COOL? In most PLCs, the...
Forum: LIVE PLC Questions And Answers April 9th, 2021, 02:45 PM
Replies: 3
Views: 566
Posted By mk42
There is no inherent incompatibility between EIP...

There is no inherent incompatibility between EIP and PN, like I think there is with Ethercat. For example, Siemens recently released a few IO interface modules that support ModbusTCP, EIP, and PN.
...
Forum: LIVE PLC Questions And Answers April 8th, 2021, 06:55 PM
Replies: 8
Views: 686
Posted By mk42
Totally in agreement, but such is life. glad you...

Totally in agreement, but such is life. glad you got it sorted out!
Forum: LIVE PLC Questions And Answers April 8th, 2021, 10:57 AM
Replies: 8
Views: 686
Posted By mk42
I've never used that specific product, so I can't...

I've never used that specific product, so I can't say for sure. I just know that the HMIs I've used with built-in OPC UA Servers didn't have that information readily available in existing internal...
Forum: LIVE PLC Questions And Answers April 7th, 2021, 11:40 PM
Replies: 11
Views: 820
Posted By mk42
2 big parts: 1) you're paying as much for...

2 big parts:


1) you're paying as much for the FW on the circuit board as the board itself. Things like making it easy to deploy code changes on the fly without interrupting the process is a lot...
Showing results 1 to 25 of 500

 
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