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Search: Posts Made By: Aardwizz
Forum: LIVE PLC Questions And Answers October 9th, 2018, 11:49 AM
Replies: 3
Views: 185
Posted By Aardwizz
Welcome to the Forum! It's probably not the...

Welcome to the Forum!

It's probably not the volume of data that is causing Excel to crash. I've got spreadsheets that have 10's of thousands of data points that run just fine.

You don't say...
Forum: LIVE PLC Questions And Answers October 8th, 2018, 03:49 PM
Replies: 4
Views: 216
Posted By Aardwizz
Presumably, you will want both an "AutoStart" and...

Presumably, you will want both an "AutoStart" and an "AutoStop" for each pump, starting the "youngest" when the pressure is below X and stopping the "oldest" when the pump is above Y.

Presumably,...
Forum: LIVE PLC Questions And Answers October 1st, 2018, 10:47 AM
Replies: 27
Views: 1,559
Posted By Aardwizz
Negative emotions are usually more intense than...

Negative emotions are usually more intense than positive ones. Which means that for every compliment you receive, there are 100 people with the same / similar compliment who don't say anything.
Forum: LIVE PLC Questions And Answers September 24th, 2018, 06:02 AM
Replies: 18
Views: 667
Posted By Aardwizz
A bit is a memory address that contains either a...

A bit is a memory address that contains either a '0' ("False") or a '1' ("True").

When changing the value in a bit, the bit is "set" (given a value of 1) or "reset" (given a value of 0).

Thus a...
Forum: LIVE PLC Questions And Answers September 22nd, 2018, 10:54 PM
Replies: 18
Views: 667
Posted By Aardwizz
The short answer is "No". HMI software is like a...

The short answer is "No". HMI software is like a canvas, brushes and paint. What images you choose to convey, and how you convey it, is up to your creativity.

Of course, part of the point of an...
Forum: LIVE PLC Questions And Answers September 22nd, 2018, 12:13 PM
Replies: 18
Views: 667
Posted By Aardwizz
The answer is 'no', 'maybe', and 'yes'. When...

The answer is 'no', 'maybe', and 'yes'.

When we start a project, the HMI team and the PLC team (assuming the projects are big enough for "teams" or one or more people; otherwise, its just one guy...
Forum: LIVE PLC Questions And Answers September 19th, 2018, 10:31 AM
Replies: 11
Views: 392
Posted By Aardwizz
You'll have a problem with .ACD files, because...

You'll have a problem with .ACD files, because those files keep track of online data, which naturally changes over the course of time, but can be ignored when comparing for differences.

If you...
Forum: LIVE PLC Questions And Answers September 17th, 2018, 12:32 PM
Replies: 3
Views: 344
Posted By Aardwizz
You CAN "alias" members of a UDT within the UDT. ...

You CAN "alias" members of a UDT within the UDT. The method is called "bit overlay". A search on that term will probably yield a better explanation, but here goes my quick attempt:

Create all...
Forum: LIVE PLC Questions And Answers September 14th, 2018, 02:10 AM
Replies: 10
Cop
Views: 516
Posted By Aardwizz
1) The FAL instruction can do all eight of your...

1) The FAL instruction can do all eight of your divisions in one step. Set Mode to ALL, the Dest to #F8:0 (the '#' is important, it will index the destination as the source indexes) and use the...
Forum: LIVE PLC Questions And Answers September 13th, 2018, 11:47 AM
Replies: 12
Views: 313
Posted By Aardwizz
As I said, a masked move does not change the bit...

As I said, a masked move does not change the bit location. So for your example with the BCD switch wired into bits 1, 2 and 3, a MVM will set the bits in the destination as such:
Bit ... 5 4 3...
Forum: LIVE PLC Questions And Answers September 13th, 2018, 10:54 AM
Replies: 12
Views: 313
Posted By Aardwizz
A Masked move will leave the bits at the same...

A Masked move will leave the bits at the same location, i.e., bits 1-3 and bits 9-11

If you were to look at your destination file for the bits 1-3 MVM, you'll see numbers 0,2,4,6,8, etc., not 0-7,...
Forum: LIVE PLC Questions And Answers September 13th, 2018, 10:47 AM
Replies: 10
Cop
Views: 516
Posted By Aardwizz
You might want to look at the FAL instruction. ...

You might want to look at the FAL instruction.
---+----------- FAL --+
| Control: R6:0 |
| Length: 8 |
| Position: 0 |
| Mode: INC |
| Dest: N7:20 |
...
Forum: LIVE PLC Questions And Answers September 12th, 2018, 01:06 PM
Replies: 10
Cop
Views: 516
Posted By Aardwizz
What you are planning on doing will work with the...

What you are planning on doing will work with the code that you describe.

A friendly word of advice: It almost inevitably happens that, as the project advances, you discover that you need to...
Forum: LIVE PLC Questions And Answers September 12th, 2018, 10:53 AM
Replies: 7
Views: 333
Posted By Aardwizz
Some old copy of RSLogix had an RSLinx driver...

Some old copy of RSLogix had an RSLinx driver (probably an AB Ethernet IP driver) that someone named "WD73" (instead of usual "AB_ETHIP-1").

Your copy of RSLinx does not have a driver with this...
Forum: LIVE PLC Questions And Answers September 10th, 2018, 10:15 AM
Replies: 7
Views: 209
Posted By Aardwizz
The problem is, if the PLC isn't running, it...

The problem is, if the PLC isn't running, it can't execute the GSV instruction that tells the HMI that it's in program mode!

The best thing to do is have the PLC write its seconds value into a...
Forum: LIVE PLC Questions And Answers September 9th, 2018, 06:13 AM
Replies: 9
Views: 493
Posted By Aardwizz
Personally, I would have written the code as: ...

Personally, I would have written the code as:
B_11.0 B_1021.3
---+---| |--------(L)---+--
| |
| B10.14 B_1021.3 |
+---| |--------(U)---+


B_11.1 ...
Forum: LIVE PLC Questions And Answers August 27th, 2018, 10:44 AM
Replies: 22
Views: 1,823
Posted By Aardwizz
Here's what I do: First, I find two...

Here's what I do:

First, I find two consecutive, unused bits. Let's say B10/0 and B10/1.


Next I will TEMPORARILY add the following rung as the last rung of LAD 2:
XIC S:5/0 BST OTE B10/0...
Forum: LIVE PLC Questions And Answers August 25th, 2018, 08:42 PM
Replies: 26
Views: 1,197
Posted By Aardwizz
No one on the forum will be able to provide you...

No one on the forum will be able to provide you with any, I believe.

You need to talk to the people supplying the GC, and ASK THEM what data they are mapping to what registers.

You'll also have...
Forum: LIVE PLC Questions And Answers August 25th, 2018, 06:13 PM
Replies: 26
Views: 1,197
Posted By Aardwizz
Yes, maybe. The Modbus RTU communication...

Yes, maybe.

The Modbus RTU communication will have a host of floating point data, all packed in consecutive registers:
40001 may contain O2 mole %;
40003 may contain CH4 (methane) mole %;
40005...
Forum: LIVE PLC Questions And Answers August 24th, 2018, 07:44 AM
Replies: 26
Views: 1,197
Posted By Aardwizz
I assume you are talking about displaying the...

I assume you are talking about displaying the data on an AB Panelview, of some flavor.

Forget about visualization for a moment. Ask yourself: how can I get the data into my tag database? Once...
Forum: LIVE PLC Questions And Answers August 24th, 2018, 05:45 AM
Replies: 26
Views: 1,197
Posted By Aardwizz
Silly question: What does the customer want to...

Silly question: What does the customer want to see?
Forum: LIVE PLC Questions And Answers August 24th, 2018, 05:38 AM
Replies: 3
Views: 609
Posted By Aardwizz
(1) How specific bits get addressed varies by...

(1) How specific bits get addressed varies by card type. In your I/O tree there will be a rack named "UNREADABLE" (since we can't read you posted images clearly).

In the controller-scoped tags,...
Forum: LIVE PLC Questions And Answers August 19th, 2018, 06:15 AM
Replies: 16
Views: 1,260
Posted By Aardwizz
What I'd probably do, if someone told me that I...

What I'd probably do, if someone told me that I had to, would be to build a UDT with a Real (".Frac"), and then however I wanted to display the fraction (String; or Numerator (DInt) & Denominator...
Forum: LIVE PLC Questions And Answers August 17th, 2018, 11:41 AM
Replies: 11
Views: 929
Posted By Aardwizz
You want to do WHAT ?!?!

Welcome to the forum!



It appears that you are trying to find a PLC equivalent to the VB "Set" function, as in:

Set myTag = "BiscuitArray"
myTag[0] := 334
Forum: LIVE PLC Questions And Answers August 12th, 2018, 02:46 PM
Replies: 10
Views: 373
Posted By Aardwizz
I've told him. Sparkie told him. Now you've...

I've told him. Sparkie told him. Now you've told him. We'll see if he listens.

If he doesn't, he's going to run into trouble when trying to end the continuous cycling when the tank is empty,...
Showing results 1 to 25 of 181

 
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