You are not registered yet. Please click here to register!


 
 
plc storereviewsdownloads
This board is for PLC Related Q&A ONLY. Please DON'T use it for advertising, etc.
 
Try our online PLC Simulator- FREE.  Click here now to try it.

---------->>>>>Get FREE PLC Programming Tips

New Here? Please read this important info!!!


Go Back   PLCS.net - Interactive Q & A > Search Forums

Showing results 1 to 25 of 425
Search took 0.09 seconds.
Search: Posts Made By: g.mccormick
Forum: LIVE PLC Questions And Answers January 19th, 2018, 03:35 PM
Replies: 1,026
Views: 402,938
Posted By g.mccormick
Sweet. Thanks!

Sweet. Thanks!
Forum: LIVE PLC Questions And Answers January 19th, 2018, 12:49 PM
Replies: 1,026
Views: 402,938
Posted By g.mccormick
Archie, Is there a way to do bit of word...

Archie,
Is there a way to do bit of word masking? I have 3 32bit ints that hold status of a bunch of logicals, I'd like to display the the individual statuses on the HMI using the appropriate bits....
Forum: LIVE PLC Questions And Answers January 16th, 2018, 11:02 AM
Replies: 12
Views: 391
Posted By g.mccormick
Agree with Tom, no voltage drop. The issue of...

Agree with Tom, no voltage drop. The issue of noise will be the biggest issue. Is the input module single ended? I would use an isolated diffenential signal conditionier to then output to the IO...
Forum: LIVE PLC Questions And Answers January 16th, 2018, 10:53 AM
Replies: 10
Views: 382
Posted By g.mccormick
I would assume these are TEFC motors? Like...

I would assume these are TEFC motors? Like OkiePC said, slower speeds will have less airflow so the temps will be higher.

Jraef is one of the experts on motor/drives.
Forum: LIVE PLC Questions And Answers January 16th, 2018, 09:04 AM
Replies: 10
Views: 382
Posted By g.mccormick
If you ran them loaded for 4 hours, I would...

If you ran them loaded for 4 hours, I would expect them to get hot.
Forum: LIVE PLC Questions And Answers December 29th, 2017, 06:21 PM
Replies: 7
Views: 658
Posted By g.mccormick
Flyback diodes in backwards will let out little...

Flyback diodes in backwards will let out little smoke.
Forum: LIVE PLC Questions And Answers December 16th, 2017, 03:49 PM
Replies: 50
Views: 2,055
Posted By g.mccormick
Thanks for the insite, I appreciate it.

Thanks for the insite, I appreciate it.
Forum: LIVE PLC Questions And Answers December 16th, 2017, 03:13 PM
Replies: 50
Views: 2,055
Posted By g.mccormick
What about say a chemical process that is...

What about say a chemical process that is exothermic and requires cooling water pumps to keep temperature of a vessel from going out of control? I'm not being difficult, series question. In that...
Forum: LIVE PLC Questions And Answers December 16th, 2017, 09:32 AM
Replies: 50
Views: 2,055
Posted By g.mccormick
The op mentioned that certain estop need to be...

The op mentioned that certain estop need to be done on a chemical process. What are those actions? In a process, unlike a machine, some things may need to be started, opened, etc during an estop. ...
Forum: LIVE PLC Questions And Answers December 13th, 2017, 04:46 PM
Replies: 11
Views: 278
Posted By g.mccormick
Agree. It would appear that the 3rd party device...

Agree. It would appear that the 3rd party device is the master/client and the m340 is the server/slave?

You can capture the packet in wireshark, then use you laptop and your favorite modbus...
Forum: LIVE PLC Questions And Answers December 13th, 2017, 07:53 AM
Replies: 10
Views: 338
Posted By g.mccormick
The remote switchable black box looks best. ...

The remote switchable black box looks best.


Next wild question. Does anyone know of a 232 to 485 converter that is switchable? Ie. Sometimes i need to convert to 485 and sometimes not? Got...
Forum: LIVE PLC Questions And Answers December 13th, 2017, 07:15 AM
Replies: 23
Views: 923
Posted By g.mccormick
Its funny, they have 230 at the outlet. Americans...

Its funny, they have 230 at the outlet. Americans consider 230 "danger high voltage".
All of the outlets though seem to be RCD outlets with switches on the outlet, and it seems that most/all of...
Forum: LIVE PLC Questions And Answers December 13th, 2017, 06:47 AM
Replies: 23
Views: 923
Posted By g.mccormick
I agree with that. I am currently sitting in...

I agree with that. I am currently sitting in Nigeria. They use 230VAC for single phase power.
Forum: LIVE PLC Questions And Answers December 11th, 2017, 03:32 PM
Replies: 10
Views: 338
Posted By g.mccormick
Both and I believe the reads are queried

Both and I believe the reads are queried
Forum: LIVE PLC Questions And Answers December 11th, 2017, 02:57 PM
Replies: 10
Views: 338
Posted By g.mccormick
Thanks for help. 1 computers can't talk to...

Thanks for help.
1 computers can't talk to each other.
2 I need to investigate if set controller will allow multiple masters to talk at same time. This is not modbus protocol, and I don't...
Forum: LIVE PLC Questions And Answers December 11th, 2017, 01:16 PM
Replies: 4
Views: 167
Posted By g.mccormick
IF you want to control to pressure use a pressure...

IF you want to control to pressure use a pressure transducer. If you want to control CFM based on how many systems are running, you can get duct averaging flow transmitters. Although, I don't know...
Forum: LIVE PLC Questions And Answers December 11th, 2017, 01:14 PM
Replies: 10
Views: 338
Posted By g.mccormick
RS485 "selector switch?"

I have an application where a 485 connection needs to go from a genset to either computer A or computer B. I had a relay in use (A on NC contacts) (B on NO contacts) that was energized by a 2pos...
Forum: LIVE PLC Questions And Answers December 7th, 2017, 04:04 PM
Replies: 26
Views: 1,398
Posted By g.mccormick
I get confused on this, but isn't it relative as...

I get confused on this, but isn't it relative as far as the producer is concerned?
Forum: LIVE PLC Questions And Answers December 6th, 2017, 03:27 PM
Replies: 25
Views: 777
Posted By g.mccormick
Is it as simple as water demand/usage decreases...

Is it as simple as water demand/usage decreases in the winter time? Less demand means less flow means less current? And I also agree that standard CT may not work well on vfd. Using analog out from...
Forum: LIVE PLC Questions And Answers December 6th, 2017, 01:45 PM
Replies: 30
Views: 928
Posted By g.mccormick
Just be sure to install in the correct direction...

Just be sure to install in the correct direction or else they will smoke. Band to positive
Forum: LIVE PLC Questions And Answers November 22nd, 2017, 02:50 PM
Replies: 11
Views: 714
Posted By g.mccormick
Oh yes I def. have the wrong equipment. The...

Oh yes I def. have the wrong equipment. The "mechanical engineer" that was in charge of this equipment screwed up two ways.

1. He thought he was buying a steam boiler (you know something that...
Forum: LIVE PLC Questions And Answers November 22nd, 2017, 02:42 PM
Replies: 11
Views: 714
Posted By g.mccormick
I am using an AutomationDirect P2k for this, not...

I am using an AutomationDirect P2k for this, not a AB product.

Tom and others, your comment on floating control, in reading that document it is basically propotional only control correct?
...
Forum: LIVE PLC Questions And Answers November 15th, 2017, 04:33 PM
Replies: 11
Views: 714
Posted By g.mccormick
Long interval PWM and PID control

I have an application where I will be opening and closing an actuated ball valve to humidify a space. The valve is a pneumatically actuated double acting valve with a namur mount solenoid valve on...
Forum: LIVE PLC Questions And Answers November 14th, 2017, 03:50 PM
Replies: 7
Views: 390
Posted By g.mccormick
Thanks all

Thanks all
Forum: LIVE PLC Questions And Answers November 14th, 2017, 01:26 PM
Replies: 7
Views: 390
Posted By g.mccormick
Handheld tach from AutomationDirect

Long shot, but has anyone bought and/or used any of the tachs from AD?

https://www.automationdirect.com/adc/Shopping/Catalog/Tools_-a-_Test_Equipment/Handheld_Tachometers


I am planning on...
Showing results 1 to 25 of 425

 
Forum Jump

All times are GMT -5. The time now is 07:07 PM.


.