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Search: Posts Made By: bernie_carlton
Forum: LIVE PLC Questions And Answers August 6th, 2019, 09:21 AM
Replies: 6
Views: 363
Posted By bernie_carlton
Your description of the wiring suggests a...

Your description of the wiring suggests a differential signal. If it is single ended then the wiring should be + to In+ and - to V/I in - and ANLG COM.
Forum: LIVE PLC Questions And Answers August 2nd, 2019, 11:03 PM
Replies: 2
Views: 202
Posted By bernie_carlton
I'm glad you have it working but I don't see what...

I'm glad you have it working but I don't see what the MVM with the same source and destination does. It would seem to have no net effect.
Forum: LIVE PLC Questions And Answers July 10th, 2019, 02:21 PM
Replies: 2
Views: 362
Posted By bernie_carlton
This allows individual bit addressing with a...

This allows individual bit addressing with a normal 'V' word. For example B3000.0 addresses the lowest bit of V3000. In the DL06 manual search for Bit-Of-Word instructions.
Forum: LIVE PLC Questions And Answers July 4th, 2019, 06:37 PM
Replies: 2
Views: 282
Posted By bernie_carlton
The obvious answer is FIFO_Array[3] = 1, but this...

The obvious answer is FIFO_Array[3] = 1, but this may depend on the particular circumstances. I think we need to see you actual code to determine why you think the position of possibly a FIFO...
Forum: LIVE PLC Questions And Answers June 24th, 2019, 01:32 PM
Replies: 9
Views: 478
Posted By bernie_carlton
As floating point numbers are an approximation (...

As floating point numbers are an approximation ( though exact if the number is a submultiple of 2 like 1/2 1/4 1/8 or made up of submultiple) the operations on them yield approximations also. Your...
Forum: LIVE PLC Questions And Answers June 22nd, 2019, 01:41 PM
Replies: 9
Views: 1,013
Posted By bernie_carlton
I'm pretty s u're you can change it without...

I'm pretty s u're you can change it without deleting and re-creating at least while offline.
Forum: LIVE PLC Questions And Answers June 21st, 2019, 10:17 PM
Replies: 9
Views: 1,013
Posted By bernie_carlton
Yes, this is one of multiple ways for implement a...

Yes, this is one of multiple ways for implement a 'state like' execution of code. One advantage of using a counter's accumulator to hold the current state is assured holding of the value through a...
Forum: LIVE PLC Questions And Answers June 17th, 2019, 02:11 PM
Replies: 5
Views: 404
Posted By bernie_carlton
The code including the setup looks ok to me.

The code including the setup looks ok to me.
Forum: LIVE PLC Questions And Answers May 26th, 2019, 12:21 PM
Replies: 9
Views: 886
Posted By bernie_carlton
Just to note that if your string variables are...

Just to note that if your string variables are not in array then you will have to use individual copies.
Forum: LIVE PLC Questions And Answers May 26th, 2019, 09:57 AM
Replies: 9
Views: 886
Posted By bernie_carlton
Create another 10 long string array, let's say...

Create another 10 long string array, let's say tempstring. I'll call your first array pumps. Enter using the variable table a '0' into tempstring[0]


Then COP pumps[0] tempstring[1] 9. This is...
Forum: LIVE PLC Questions And Answers May 22nd, 2019, 12:20 PM
Replies: 31
Views: 2,218
Posted By bernie_carlton
It looks like a falling output to solenoid 1 from...

It looks like a falling output to solenoid 1 from 4 to 11 ma input and a rising output to solenoid 2 from 13 to 20 ma input. What do you want to output to solenoid 1 above 11 ma input and similarly...
Forum: LIVE PLC Questions And Answers May 17th, 2019, 09:47 AM
Replies: 13
Views: 763
Posted By bernie_carlton
I believe the limits on parallel logic are much...

I believe the limits on parallel logic are much higher using extended branches than using nested branches.
Forum: LIVE PLC Questions And Answers May 13th, 2019, 05:01 PM
Replies: 19
Views: 1,270
Posted By bernie_carlton
As I understand it, from a tech point of view,...

As I understand it, from a tech point of view, the dither provides for continuous very small movements to the valve to lessen the chances of the valve momentarily sticking when given another movement...
Forum: LIVE PLC Questions And Answers May 13th, 2019, 02:19 PM
Replies: 19
Views: 1,270
Posted By bernie_carlton
I woul be concerned about providing to low...

I woul be concerned about providing to low voltage dither signal while at a standstill. It may not be of concern if driving a hydraulic motor.
Forum: LIVE PLC Questions And Answers May 12th, 2019, 06:40 PM
Replies: 8
Views: 566
Posted By bernie_carlton
The only reason for the unlatch of the major...

The only reason for the unlatch of the major error is to allow operational time to track down the source of the overflow errors. Determine the cause of each and modify the code to prevent them. If...
Forum: LIVE PLC Questions And Answers May 9th, 2019, 12:18 PM
Replies: 2
Views: 338
Posted By bernie_carlton
It will be helpful if you state the control...

It will be helpful if you state the control platform you are using. I see from previous posts that this might be an AB platform but it is best to restate that in a new thread.
Forum: LIVE PLC Questions And Answers May 5th, 2019, 10:15 AM
Replies: 16
Views: 987
Posted By bernie_carlton
Is there an official AB document which details...

Is there an official AB document which details this execution optimization?
Forum: LIVE PLC Questions And Answers May 3rd, 2019, 09:09 AM
Replies: 12
Views: 706
Posted By bernie_carlton
I had understood that COP while executing in one...

I had understood that COP while executing in one scan could be interrupted by I/O or communication updates with the possibility of changes of data in mid copy. CPS does the same but with interrupts...
Forum: LIVE PLC Questions And Answers April 22nd, 2019, 11:38 AM
Replies: 13
Views: 495
Posted By bernie_carlton
I found using Stage logic best for sequential...

I found using Stage logic best for sequential communication commands. One command per stage. In each stage just wait for the busy bit (SP116 in this example) to be off then trigger the MWX/MRX...
Forum: LIVE PLC Questions And Answers April 16th, 2019, 04:54 PM
Replies: 13
Views: 495
Posted By bernie_carlton
It seems that the MRX of each pair would not be...

It seems that the MRX of each pair would not be executed. Do the receive and transmit lights for port 2 flash?
Forum: LIVE PLC Questions And Answers April 14th, 2019, 01:23 PM
Replies: 16
Views: 6,669
Posted By bernie_carlton
While any plc series will eventually be phased...

While any plc series will eventually be phased out the AB site (note Google Allen Bradley Silver Series) shows the 1400 to be 'Active'. (Some conformal coating models have been discontinued) Your use...
Forum: LIVE PLC Questions And Answers April 14th, 2019, 12:34 PM
Replies: 16
Views: 6,669
Posted By bernie_carlton
The manual states which firmware versions have...

The manual states which firmware versions have this. As long as you know the data table locations of the alarms you can display them.
Forum: LIVE PLC Questions And Answers April 13th, 2019, 11:02 AM
Replies: 3
Views: 396
Posted By bernie_carlton
Pressing the button should energize a one shot...

Pressing the button should energize a one shot which latches a bit indicating travel. The bit will allow the rungs which control movement. Unlatch the bit when the target is reached. If the button is...
Forum: LIVE PLC Questions And Answers March 26th, 2019, 06:02 PM
Replies: 2
Views: 333
Posted By bernie_carlton
You have it correct. SP62 along with others in...

You have it correct. SP62 along with others in this range are the result bits for the 32 bit compares. While 16 bit compares can be performed inline on a rung the 32 bit compares are in an output box...
Forum: LIVE PLC Questions And Answers March 16th, 2019, 02:19 PM
Replies: 13
Views: 1,038
Posted By bernie_carlton
There is a lower cost package just for the micro...

There is a lower cost package just for the micro line, but I don't have the number. Sorry.
Showing results 1 to 25 of 500

 
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