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Search: Posts Made By: ASF
Forum: LIVE PLC Questions And Answers February 23rd, 2021, 11:19 PM
Replies: 7
Views: 241
Posted By ASF
Yes, that's correct. This will be a generally...

Yes, that's correct. This will be a generally straightforward operation.

You will still have to consider what to do if one fan fails. For example, do you shut down because you can't maintain the...
Forum: LIVE PLC Questions And Answers February 23rd, 2021, 11:13 PM
Replies: 7
Views: 252
Posted By ASF
+1 to this. But I'd definitely go for the...

+1 to this. But I'd definitely go for the Micrologix 1100 because you get ethernet and online edits, and the 1000 is more or less obsolete.
Forum: LIVE PLC Questions And Answers February 23rd, 2021, 05:39 PM
Replies: 23
Views: 459
Posted By ASF
Conn1.ConnectionString =...

Conn1.ConnectionString = "dsn=SP3DB;uid='sa';pwd='';"
You will have to specify the database username and password in this line of your code. This example is for a username "sa" and no password, but...
Forum: LIVE PLC Questions And Answers February 23rd, 2021, 05:34 PM
Replies: 7
Views: 241
Posted By ASF
Single PID loop. Exactly how it's...

Single PID loop.

Exactly how it's implemented depends on how you intend to run it. If it's a duty/standby type arrangement, it's pretty straightforward; one PID which feeds the speed setpoint into...
Forum: LIVE PLC Questions And Answers February 22nd, 2021, 05:14 PM
Replies: 15
Views: 7,148
Posted By ASF
Uh...I know it probably feels like 2020 will...

Uh...I know it probably feels like 2020 will never end, but we're a good two months into 2021 now :site:
Forum: LIVE PLC Questions And Answers February 21st, 2021, 11:40 PM
Replies: 16
Views: 660
Posted By ASF
Don't worry, Kevin, DrBitBoy just is just...

Don't worry, Kevin, DrBitBoy just is just slightly more susceptible to Nerd Sniping (https://xkcd.com/356/) than the rest of us.

DRB, keep on doing your thing, just watch out for semi-trailers...
Forum: LIVE PLC Questions And Answers February 21st, 2021, 04:55 PM
Replies: 6
Views: 463
Posted By ASF
Completely agree with both your posts Jesper....

Completely agree with both your posts Jesper. I've had several projects for a large multinational where they used locking guards, and a dual-channel safety device for positive feedback that the load...
Forum: LIVE PLC Questions And Answers February 18th, 2021, 06:24 PM
Replies: 6
Views: 233
Posted By ASF
For a timer, the default value is the value set...

For a timer, the default value is the value set in the definition. That is, if you:
- Have a local AOI parameter called "My_AOI_Timer"
- Within the AOI, put a TON/TOF/RTO on a rung
- Assign...
Forum: LIVE PLC Questions And Answers February 18th, 2021, 05:36 PM
Replies: 6
Views: 233
Posted By ASF
If you change the timer preset of one of your...

If you change the timer preset of one of your instances online, save the program, and download again, does it retain its preset?

When you update an AOI for which there are existing instances,...
Forum: LIVE PLC Questions And Answers February 18th, 2021, 05:20 PM
Replies: 6
Views: 463
Posted By ASF
+1. I've just had this exact discussion with a...

+1. I've just had this exact discussion with a client who ordered 5/2 way valves and had to send them back and replace them with 5/3 way valves for this exact reason.

One other consideration -...
Forum: LIVE PLC Questions And Answers February 16th, 2021, 04:58 PM
Replies: 3
Views: 364
Posted By ASF
Does your pump description have spaces in it? If...

Does your pump description have spaces in it? If so, you'll get an error. Try setting your pump description to a single word with no spaces, and see if that works. If it does, your solution is ASCII...
Forum: LIVE PLC Questions And Answers February 15th, 2021, 05:25 PM
Replies: 27
Views: 3,094
Posted By ASF
The Siemens terminology always made me uneasy. ...

The Siemens terminology always made me uneasy.

"Transfer PC > PG"
"Transfer PG > PC"

Once you know that "PG" is your "ProGrammer" (i.e. your laptop), and "PC" is your PLC, it's fine - but for...
Forum: LIVE PLC Questions And Answers February 14th, 2021, 05:18 PM
Replies: 7
Views: 372
Posted By ASF
I answered this question in your original thread...

I answered this question in your original thread (http://www.plctalk.net/qanda/showpost.php?p=877192&postcount=4).

This is called indirect addressing, where you specify an array and then choose...
Forum: LIVE PLC Questions And Answers February 14th, 2021, 04:48 PM
Replies: 4
Views: 358
Posted By ASF
MOV TEG_AN_READ_FLT[FLT_SEARCH.POS] Some_Tag

MOV TEG_AN_READ_FLT[FLT_SEARCH.POS] Some_Tag
Forum: LIVE PLC Questions And Answers February 10th, 2021, 11:37 PM
Replies: 41
Views: 1,579
Posted By ASF
What is the data type of TEST_TEG? Can you post a...

What is the data type of TEST_TEG? Can you post a screenshot of the property window for that tag?
Forum: LIVE PLC Questions And Answers February 10th, 2021, 11:35 PM
Replies: 8
Views: 430
Posted By ASF
Oh right, I'm following now. You can divide...

Oh right, I'm following now.

You can divide the setpoint (in seconds) by 60 and display it to the operator, but they won't be able to write back to it, because their input will just get...
Forum: LIVE PLC Questions And Answers February 10th, 2021, 08:24 PM
Replies: 8
Views: 430
Posted By ASF
It's been a long time since I used Modicon PLC's,...

It's been a long time since I used Modicon PLC's, but as a first-up sanity check - shouldn't you be using multiply instead of divide?
Forum: LIVE PLC Questions And Answers February 10th, 2021, 07:02 PM
Replies: 41
Views: 1,579
Posted By ASF
It won't let you change the position until you...

It won't let you change the position until you have a valid CONTROL tag in the Control section.

The CONTROL tag is a special data type that contains several elements necessary to the functioning...
Forum: LIVE PLC Questions And Answers February 10th, 2021, 05:10 PM
Replies: 41
Views: 1,579
Posted By ASF
The expression looks valid to me - you may just...

The expression looks valid to me - you may just need to put an initial value (i.e. zero) in the Position field


Edit: Also, you need to create a tag of type CONTROL and put that tag (and only...
Forum: LIVE PLC Questions And Answers February 10th, 2021, 05:07 PM
Replies: 4
Views: 308
Posted By ASF
Good to hear! Thanks for reporting back.

Good to hear! Thanks for reporting back.
Forum: LIVE PLC Questions And Answers February 10th, 2021, 05:03 PM
Replies: 8
Views: 1,244
Posted By ASF
If you follow the links from post #2, it will...

If you follow the links from post #2, it will take you to this technote (https://rockwellautomation.custhelp.com/app/answers/answer_view/a_id/970047), which has all the details. You will need a...
Forum: LIVE PLC Questions And Answers February 10th, 2021, 04:58 PM
Replies: 16
Views: 840
Posted By ASF
Most likely it's not related to the instruction...

Most likely it's not related to the instruction itself, but the structure of the rung. For example, you'd get an error similar to that if you tried to put two OTE's in series (you can do that in...
Forum: LIVE PLC Questions And Answers February 10th, 2021, 04:55 PM
Replies: 41
Views: 1,579
Posted By ASF
I am 100% certain that it does. I have used FSC...

I am 100% certain that it does. I have used FSC instructions in hundreds of 1769 series controllers.

What's the exact model number of your controller?


Edit: I see the conversation has...
Forum: LIVE PLC Questions And Answers February 10th, 2021, 04:52 PM
Replies: 43
Views: 1,286
Posted By ASF
I'm pretty certain that if you don't save before...

I'm pretty certain that if you don't save before going offline, any online changes are reverted back to your offline copy.

So let's say that the array indexes (indecies?) are messed up in your...
Forum: LIVE PLC Questions And Answers February 9th, 2021, 11:25 PM
Replies: 4
Views: 308
Posted By ASF
Welcome to the forum! The first thing I...

Welcome to the forum!

The first thing I would try is to use TCPing (https://elifulkerson.com/projects/tcping.php) to try and ping that specific TCP port. That will at least make sure the port is...
Showing results 1 to 25 of 500

 
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