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Search: Posts Made By: SoftwareJanitor
Forum: LIVE PLC Questions And Answers October 20th, 2017, 11:48 AM
Replies: 3
Views: 469
Posted By SoftwareJanitor
Ken Roach: No faults this time loading...

Ken Roach:

No faults this time loading remotely. Previously, what would happen is - we'd *discover* the redundant PLC faulted, but the primary was still running fine. And since this application...
Forum: LIVE PLC Questions And Answers October 20th, 2017, 01:02 AM
Replies: 9
Views: 888
Posted By SoftwareJanitor
Paully's5.0: Sounds tedious, yeah. ...

Paully's5.0:

Sounds tedious, yeah.

With our proprietary system, I just made a change to an Agitation module that involved downgrading an alarm action. It affected 9 "sheets" of logic...
Forum: LIVE PLC Questions And Answers October 19th, 2017, 07:30 PM
Replies: 3
Views: 469
Posted By SoftwareJanitor
I had asked because we've had our redundant...

I had asked because we've had our redundant controller fault and Rockwell tech assistance said we'd have to direct-connect and load locally. But the redundancy documentation said no such thing, and...
Forum: LIVE PLC Questions And Answers October 19th, 2017, 07:21 PM
Replies: 9
Views: 888
Posted By SoftwareJanitor
Kekrahulik: Ohhhhh. Well, OK. That'll...

Kekrahulik:

Ohhhhh. Well, OK. That'll work, I guess. But you'd think you'd be able to just drag and drop a routine or program (from an offline session) on top of another routine or program (in...
Forum: LIVE PLC Questions And Answers October 18th, 2017, 01:03 PM
Replies: 9
Views: 888
Posted By SoftwareJanitor
janner_10, Harryting: Thanks for your...

janner_10, Harryting:

Thanks for your replies.

Yeah, I knew you could do online edits, and our current proprietary system doesn't allow that, so we'll get some benefit there, but what do you...
Forum: LIVE PLC Questions And Answers October 18th, 2017, 10:51 AM
Replies: 9
Views: 888
Posted By SoftwareJanitor
ControlLogix: Download by Program?

Is it possible to download your ControlLogix app by Program (or in some other segmented way)? Or do you always have to download the entire application?
Forum: LIVE PLC Questions And Answers October 13th, 2017, 08:09 AM
Replies: 3
Views: 469
Posted By SoftwareJanitor
Redundant PLCs: Reloading Your App Remotely

Anybody experience any problems re-loading a Redundant ControlLogix PLC remotely (via Ethernet)? Are there any special preparations one needs to take beforehand (so that the redundant PLC doesn't...
Forum: LIVE PLC Questions And Answers October 2nd, 2017, 01:34 PM
Replies: 14
Views: 893
Posted By SoftwareJanitor
So you're saying the (essentially) same...

So you're saying the (essentially) same instruction works differently if it's used in Ladder vs. Function Block? Why wouldn't the system be smart enough to know the context of use of the PID in...
Forum: LIVE PLC Questions And Answers October 1st, 2017, 07:16 AM
Replies: 14
Views: 893
Posted By SoftwareJanitor
Why would you want to do this? Would it be to...

Why would you want to do this? Would it be to reduce load on the PLC? And is this something that is commonly done?
Forum: LIVE PLC Questions And Answers September 28th, 2017, 11:59 AM
Replies: 27
Views: 1,924
Posted By SoftwareJanitor
Actually, it's the same person. You *should* be...

Actually, it's the same person. You *should* be doing #1 first (by writing a Functional Spec), then you'd have a "well-described task" that you can use to do #2.

If you're not doing #1, and...
Forum: LIVE PLC Questions And Answers September 25th, 2017, 01:01 PM
Replies: 26
Views: 2,346
Posted By SoftwareJanitor
To me, PLCs were typically "one-offs": "here's a...

To me, PLCs were typically "one-offs": "here's a PLC program to run this mill right here". "And here's another PLC that runs this dryer". Each one had its own dedicated panel display locally, and...
Forum: LIVE PLC Questions And Answers September 23rd, 2017, 07:31 AM
Replies: 26
Views: 2,346
Posted By SoftwareJanitor
Jraef: For our Plant (~50 DCS Controllers...

Jraef:

For our Plant (~50 DCS Controllers currently), I don't think it matters whether we go with a DCS like Delta-V, or PlantPax. They'll both do the job. Maybe we can get the overall...
Forum: LIVE PLC Questions And Answers September 22nd, 2017, 05:28 PM
Replies: 26
Views: 2,346
Posted By SoftwareJanitor
We are still in the process of deciding whether...

We are still in the process of deciding whether we will be using PlantPax (Large Pharma system here) or another solution.

The problem I have with these claims of being able to 'put your systems...
Forum: LIVE PLC Questions And Answers September 7th, 2017, 11:42 AM
Replies: 3
Views: 366
Posted By SoftwareJanitor
Spaderkung: Thanks for your response. They...

Spaderkung:

Thanks for your response. They would be alarms with history.

Would this have to be implemented on the Wonderware side with just an index read from the PLC?
Forum: LIVE PLC Questions And Answers September 7th, 2017, 01:04 AM
Replies: 3
Views: 366
Posted By SoftwareJanitor
Contrologix5000 & Wondwerware 10: Dynamic Alarm Text Strings

Instead of defining static alarm text strings in Wonderware, is it possible to build dynamic strings in the PLC and display those, or is that just not the way it's done with PLCs?

For example, a...
Forum: LIVE PLC Questions And Answers August 29th, 2017, 11:05 AM
Replies: 1
Views: 318
Posted By SoftwareJanitor
RSLogix5000: Tag Update Paths/Tree Structure

If I have a tag that is updated from one of several different tags, and each of those several different tags are, in turn, reliant on other tags, switches, PIDs etc.... can RSLogix5000 show me all of...
Forum: LIVE PLC Questions And Answers August 27th, 2017, 10:05 PM
Replies: 36
Views: 3,782
Posted By SoftwareJanitor
Whoa! Ada for Automation?? I LOVE it! You...

Whoa! Ada for Automation?? I LOVE it! You know, when I got out of college a number of years ago, my first job was with Raytheon working on large-scale software projects for the Navy. Right before...
Forum: LIVE PLC Questions And Answers August 27th, 2017, 09:57 PM
Replies: 36
Views: 3,782
Posted By SoftwareJanitor
LOL! I wish it was that easy. The only shot I...

LOL! I wish it was that easy. The only shot I have at avoiding getting steam-rolled by the "Programming-In-A-Box" proponents" is to prove a sizable cost savings. It's definitely an up-hill battle!...
Forum: LIVE PLC Questions And Answers August 18th, 2017, 12:34 PM
Replies: 36
Views: 3,782
Posted By SoftwareJanitor
That's pretty funny! Maybe the earlier DOS-based...

That's pretty funny! Maybe the earlier DOS-based systems that some might've run across could've qualified as the 'devil's work', but not a more modern, multi-CPU, Server-based system with virtually...
Forum: LIVE PLC Questions And Answers August 18th, 2017, 12:21 PM
Replies: 36
Views: 3,782
Posted By SoftwareJanitor
Yeah, a number of years ago when I worked for an...

Yeah, a number of years ago when I worked for an Integrator, I came across such a system which ran QNX (a Unix Variant). That system was a one-off that nobody knew anything about, and it ended up...
Forum: LIVE PLC Questions And Answers August 16th, 2017, 02:57 PM
Replies: 36
Views: 3,782
Posted By SoftwareJanitor
Well, the "support" I'm saying is overrated is...

Well, the "support" I'm saying is overrated is that which comes from the vendors of these "programming-in-a-box" systems. It's largely a money-grab, and something we've never had to deal with here....
Forum: LIVE PLC Questions And Answers August 16th, 2017, 02:03 PM
Replies: 36
Views: 3,782
Posted By SoftwareJanitor
It wouldn't be like that. There are 120+...

It wouldn't be like that. There are 120+ software modules, each of which control a particular function (transfers, heating, cooling, pressure, centrifuges, dryers, utilities, etc). Each module may...
Forum: LIVE PLC Questions And Answers August 15th, 2017, 01:34 PM
Replies: 36
Views: 3,782
Posted By SoftwareJanitor
The quotes are in the $8-$12 million range, but...

The quotes are in the $8-$12 million range, but after the smoke clears, I'm guessing the metric will work out to something like $1 million per 1000 I/O, or $13 million! That's a LOT of room to come...
Forum: LIVE PLC Questions And Answers August 15th, 2017, 01:04 PM
Replies: 36
Views: 3,782
Posted By SoftwareJanitor
The I/O protocol is already implemented. It...

The I/O protocol is already implemented. It would just need to be ported to the server(s).

I mentioned redundant servers, but I'm not really sure if that's even necessary given the hardware...
Forum: LIVE PLC Questions And Answers August 15th, 2017, 12:51 PM
Replies: 36
Views: 3,782
Posted By SoftwareJanitor
What software? Just a real-time operating system...

What software? Just a real-time operating system (probably a Unix variant) and a whole lot of (modular) custom code written in an off-the-shelf language like C++.

The I/O is currently already...
Showing results 1 to 25 of 134

 
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