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Search: Posts Made By: JeremyM
Forum: LIVE PLC Questions And Answers February 22nd, 2021, 03:19 PM
Replies: 9
Views: 566
Posted By JeremyM
You can also zero the first manually, then copy...

You can also zero the first manually, then copy to the remaining elements. This is my preferred way since there's no guarantee (without checking) that the 'zero' UDT is in the initial state.
Forum: LIVE PLC Questions And Answers February 20th, 2021, 04:08 PM
Replies: 1
Views: 219
Posted By JeremyM
This is an example of CIP backplane routing (not...

This is an example of CIP backplane routing (not the same thing as IP routing). Like the CompactLogix, the same principle applies to the ControlLogix backplane when you're using combinations of...
Forum: LIVE PLC Questions And Answers February 9th, 2021, 12:04 AM
Replies: 2
Views: 312
Posted By JeremyM
^ right. The lifetime of a local tag is as...

^ right.

The lifetime of a local tag is as long as its owning AOI instance exists. You can remove a call to an AOI instance from code but leave the instance in the tag database, and its local data...
Forum: LIVE PLC Questions And Answers February 8th, 2021, 11:54 PM
Replies: 9
Views: 431
Posted By JeremyM
S:FS works if the AOI instance you’re...

S:FS works if the AOI instance you’re initializing a variable in happens to be unconditionally called on the first scan of the program. This applies to nested AOI instances.

To reliably initialize...
Forum: LIVE PLC Questions And Answers February 5th, 2021, 01:20 AM
Replies: 8
Views: 571
Posted By JeremyM
Depending on the assembly language instruction...

Depending on the assembly language instruction set, you may not need to load a 1 at all if the constant is embedded in the instruction word.
Forum: LIVE PLC Questions And Answers February 5th, 2021, 01:12 AM
Replies: 8
Views: 571
Posted By JeremyM
isOdd := number & 16#00000001; ?

isOdd := number & 16#00000001;

?
Forum: LIVE PLC Questions And Answers February 4th, 2021, 07:35 PM
Replies: 4
Views: 440
Posted By JeremyM
To add, adapters aren’t even aware of the...

To add, adapters aren’t even aware of the presence of FPDs. They’re entirely a physical layer component.
Forum: LIVE PLC Questions And Answers February 4th, 2021, 02:31 PM
Replies: 4
Views: 440
Posted By JeremyM
The adapters support up to 31 modules.

The adapters support up to 31 modules.
Forum: LIVE PLC Questions And Answers February 3rd, 2021, 08:22 PM
Replies: 7
Views: 293
Posted By JeremyM
Buffering is like taking a snapshot of the I/O...

Buffering is like taking a snapshot of the I/O for the duration of a scan cycle - not debouncing.
Forum: LIVE PLC Questions And Answers January 30th, 2021, 11:31 AM
Replies: 11
Views: 664
Posted By JeremyM
RSLinx doesn’t show only Rockwell devices. It...

RSLinx doesn’t show only Rockwell devices. It shows anything responding to a CIP Identity request.
Forum: LIVE PLC Questions And Answers January 28th, 2021, 10:39 PM
Replies: 10
Views: 898
Posted By JeremyM
100 feet distance for yourself? What’s the...

100 feet distance for yourself? What’s the distance for the motor leads from VFD?
Forum: LIVE PLC Questions And Answers January 27th, 2021, 03:46 PM
Replies: 5
Views: 913
Posted By JeremyM
This means war :notrue:

This means war :notrue:
Forum: LIVE PLC Questions And Answers January 25th, 2021, 05:15 PM
Replies: 3
Views: 584
Posted By JeremyM
I maintain a ticket with Rockwell on this one...

I maintain a ticket with Rockwell on this one since they weren't too sure during the call.
Forum: LIVE PLC Questions And Answers January 25th, 2021, 12:06 PM
Replies: 5
Views: 913
Posted By JeremyM
Right. I discovered recently that building a...

Right. I discovered recently that building a backing collection (in the form of UDTs) of sets of local tags to the AOI and pulling the UDT tag instead of each individual member is much less costly on...
Forum: LIVE PLC Questions And Answers January 24th, 2021, 01:03 PM
Replies: 5
Views: 913
Posted By JeremyM
Arrow Some AOI Hackery

We’re familiar with the basics of AOIs:

input, output, and in/out parameters are visible and usable by the program
local tags aren’t. Or are they?


Try this:

create an AOI
add some...
Forum: LIVE PLC Questions And Answers January 24th, 2021, 12:29 AM
Replies: 3
Views: 584
Posted By JeremyM
thinking I can better phrase this: is it...

thinking I can better phrase this:

is it possible to use a PLC string value as the literal parameter substitution when navigating?
Forum: LIVE PLC Questions And Answers January 22nd, 2021, 05:24 PM
Replies: 3
Views: 584
Posted By JeremyM
FTView ME and Global Parameters

Hi all,

I'm curious about using the Parameter Tags #1-10 under the Global Connections setup.

- is the expected tag type a STRING?
- if so, would I be able to create a PLC UDT with these 10...
Forum: LIVE PLC Questions And Answers January 21st, 2021, 12:45 PM
Replies: 4
Views: 775
Posted By JeremyM
I'm struggling with another point of...

I'm struggling with another point of implementation: product temperature sensors that exist outside of any other EM in that they are used at the end of the machine unit itself.

They are shipped...
Forum: LIVE PLC Questions And Answers January 19th, 2021, 09:28 PM
Replies: 17
Views: 1,144
Posted By JeremyM
Dive into the 755 programming manual and look for...

Dive into the 755 programming manual and look for the application parameter groups.

I'm developing an AOI right now for this drive (just not that particular application...yet).
Forum: LIVE PLC Questions And Answers January 19th, 2021, 09:03 PM
Replies: 6
Views: 558
Posted By JeremyM
Did you purchase the Tag Editor Add-On? (US...

Did you purchase the Tag Editor Add-On? (US $1495)

Kidding. Are you under the Monitor Tags or Edit Tags tab?
Forum: LIVE PLC Questions And Answers January 14th, 2021, 10:52 AM
Replies: 8
Views: 681
Posted By JeremyM
The best flow chart is the one that ends in its...

The best flow chart is the one that ends in its own deletion. The only fathomable reason these cockroaches persist is that their nesting environment (the university curated by those that don’t...
Forum: LIVE PLC Questions And Answers January 14th, 2021, 10:28 AM
Replies: 9
Views: 550
Posted By JeremyM
I think the function you’re alluding to is...

I think the function you’re alluding to is uploading tag values upon save. I’m not intimately familiar with Siemens nor Codesys, so I hope this helps.
Forum: LIVE PLC Questions And Answers January 13th, 2021, 02:21 PM
Replies: 4
Views: 490
Posted By JeremyM
You could create a UDT containing a pair of DIn,...

You could create a UDT containing a pair of DIn, DOut, and perhaps some custom commands/states that are associated among them. Think of it as an equipment module containing its control modules.
...
Forum: LIVE PLC Questions And Answers January 8th, 2021, 01:40 AM
Replies: 2
Views: 391
Posted By JeremyM
It’s because you typed in the address of the...

It’s because you typed in the address of the EN2T.

The L8 has an onboard NIC and (should) have its own IP.
Forum: LIVE PLC Questions And Answers January 7th, 2021, 10:14 AM
Replies: 6
Views: 510
Posted By JeremyM
If it can be added to an L7 tree, it should work.

If it can be added to an L7 tree, it should work.
Showing results 1 to 25 of 495

 
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