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Search: Posts Made By: OkiePC
Forum: LIVE PLC Questions And Answers Yesterday, 08:37 PM
Replies: 11
Views: 106
Posted By OkiePC
I hate to recommend cycling power to the PLC, but...

I hate to recommend cycling power to the PLC, but if you cannot get online with it using programming software to diagnose the Modbus messages/logic, then cycling power to it might cause it (through...
Forum: LIVE PLC Questions And Answers August 13th, 2018, 12:27 PM
Replies: 5
Views: 348
Posted By OkiePC
I only have two Stridelinx in the field, and one...

I only have two Stridelinx in the field, and one Co-sy. My comments in the other thread in your link pretty much cover my thoughts on them. They all work great, the Stride is a little bit simpler...
Forum: LIVE PLC Questions And Answers August 12th, 2018, 09:44 PM
Replies: 18
Views: 596
Posted By OkiePC
It depends on what is in the center envelope of...

It depends on what is in the center envelope of the valve. With hydraulics, a block center valve can work reasonably well due to the incompressibility of the fluid and the better sealing it allows....
Forum: LIVE PLC Questions And Answers August 12th, 2018, 06:43 PM
Replies: 16
Views: 227
Posted By OkiePC
Have you done this?

Have you done this?
Forum: LIVE PLC Questions And Answers August 12th, 2018, 05:26 PM
Replies: 16
Views: 227
Posted By OkiePC
The Target is the target of the message. It's...

The Target is the target of the message. It's the other PLC, not the one containing the message.



"This PLC" means the PLC where the MSG instruction is located. "Target" is the other one...
Forum: LIVE PLC Questions And Answers August 12th, 2018, 04:50 PM
Replies: 18
Views: 596
Posted By OkiePC
Blocking off both ports to make a cylinder hold...

Blocking off both ports to make a cylinder hold in position doesn't even really work on paper. It might work in the extended position, but there is always leakage and you don't want to rely on a...
Forum: LIVE PLC Questions And Answers August 12th, 2018, 04:43 PM
Replies: 16
Views: 227
Posted By OkiePC
Since the Target of your message is DH+ address...

Since the Target of your message is DH+ address 20 you need to put that into the "Local DH+ Node (Octal)" in the lower section labelled "Target Device"

Right now, I see a done bit, so you ARE...
Forum: LIVE PLC Questions And Answers August 12th, 2018, 04:01 PM
Replies: 16
Views: 227
Posted By OkiePC
I think you are using the control word also for...

I think you are using the control word also for the data table address for the data. You need a separate group of words for the MSG control data block.

If you are using a classic PLC-5, you need...
Forum: LIVE PLC Questions And Answers August 12th, 2018, 02:46 PM
Replies: 16
Views: 227
Posted By OkiePC
Your image is not showing up (at least not for...

Your image is not showing up (at least not for me).

I think this forum has been having some problems with image attachments for the last couple of weeks.
Forum: LIVE PLC Questions And Answers August 12th, 2018, 01:23 PM
Replies: 10
Views: 268
Posted By OkiePC
Get a system together for controlling your...

Get a system together for controlling your sequence...don't just hack at it until it works...

http://www.plctalk.net/qanda/showthread.php?t=52654
Forum: LIVE PLC Questions And Answers August 12th, 2018, 01:19 PM
Replies: 18
Views: 596
Posted By OkiePC
There are also pneumatic cylinders with "rod...

There are also pneumatic cylinders with "rod lock" brakes that engage when air is removed. Sizing them properly is critical, but they can hold at any position.
Forum: LIVE PLC Questions And Answers August 11th, 2018, 01:13 PM
Replies: 8
Views: 222
Posted By OkiePC
This is what I have done simply for practical...

This is what I have done simply for practical reasons, since a high end industrial UPS is expensive and bulky.

I recently built a pair of well control panels for a water system to match what was...
Forum: LIVE PLC Questions And Answers August 10th, 2018, 01:13 PM
Replies: 10
Views: 321
Posted By OkiePC
You can do this in RSLogix 5000, but, if I...

You can do this in RSLogix 5000, but, if I remember right, you can only have one indirection per tag reference.

So in your case of file and word indirection you would be best served by making use...
Forum: LIVE PLC Questions And Answers August 10th, 2018, 01:05 PM
Replies: 12
Views: 369
Posted By OkiePC
Is a variator a variable ratio pulley system? ...

Is a variator a variable ratio pulley system?

https://www.mopedarmy.com/wiki/Variator
Forum: LIVE PLC Questions And Answers August 10th, 2018, 12:39 PM
Replies: 3
Views: 100
Posted By OkiePC
We have been using AuthSMTP to get around the...

We have been using AuthSMTP to get around the authentication requirements for our systems (mostly Red Lion HMIs) that can't do authenticated emails. It has been very reliable and inexpensive for us....
Forum: LIVE PLC Questions And Answers August 8th, 2018, 06:25 PM
Replies: 27
Views: 1,031
Posted By OkiePC
I've used the A/D and Puls brands with zero...

I've used the A/D and Puls brands with zero problems. There are places where it makes more sense to skip the transformer altogether. I can't imagine a noise problem being made worse, and expect the...
Forum: LIVE PLC Questions And Answers July 31st, 2018, 06:31 AM
Replies: 26
Views: 758
Posted By OkiePC
The input filter can be set fast enough to pick...

The input filter can be set fast enough to pick it up, but the PLC scan time may not be quick enough to capture all the transitions.
Forum: LIVE PLC Questions And Answers July 31st, 2018, 12:29 AM
Replies: 26
Views: 758
Posted By OkiePC
Oops, I saw 800Hz, and ignored the actual speed...

Oops, I saw 800Hz, and ignored the actual speed you are dealing with...
Forum: LIVE PLC Questions And Answers July 30th, 2018, 08:21 PM
Replies: 26
Views: 758
Posted By OkiePC
Not with a regular PLC scan in my opinion. I...

Not with a regular PLC scan in my opinion. I would definitely use the HSC, then you can be sure it will work fine. 1/800 is 0.00125 seconds or 1.25ms, meaning that your PLC input and your scan time...
Forum: LIVE PLC Questions And Answers July 30th, 2018, 08:16 PM
Replies: 20
Views: 1,808
Posted By OkiePC
I usually use a bit from the free running clock...

I usually use a bit from the free running clock and a 1-Shot preceding the math so that I am sure to have a regular controlled filter when doing this in a Micrologix. This is especially important if...
Forum: LIVE PLC Questions And Answers July 30th, 2018, 06:31 PM
Replies: 8
Views: 293
Posted By OkiePC
Red Lion HMIs support comm port redirection but...

Red Lion HMIs support comm port redirection but there are gotchas. You have to use a 3rd party program to enable it, and you will have to temporarily suspend operation of the HMI for it to work. ...
Forum: LIVE PLC Questions And Answers July 28th, 2018, 06:47 PM
Replies: 12
Views: 470
Posted By OkiePC
I agree. The proximity switch probably has a...

I agree. The proximity switch probably has a minimum load requirement that conflicts with the input resistance of the PLC input. Based on your description you are right on the edge.

You would be...
Forum: LIVE PLC Questions And Answers July 25th, 2018, 01:16 PM
Replies: 11
Views: 313
Posted By OkiePC
The keyswitch should be able to clear it, I have...

The keyswitch should be able to clear it, I have seen situations where you have to go between run and stop twice to clear the fault and get it back into run mode. Do it slowly and give it time to...
Forum: LIVE PLC Questions And Answers July 25th, 2018, 10:12 AM
Replies: 3
Views: 225
Posted By OkiePC
https://www.hydraulicspneumatics.com/other-technol...

https://www.hydraulicspneumatics.com/other-technologies/chapter-4-iso-symbols
Forum: LIVE PLC Questions And Answers July 24th, 2018, 12:34 PM
Replies: 4
Views: 134
Posted By OkiePC
Yes delete block 5, as long as you don't need to...

Yes delete block 5, as long as you don't need to send that data to some other device using the HMI as a bridge.

The displays will show 2 digits before the decimal place and 4 digits after it, and...
Showing results 1 to 25 of 500

 
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