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Search: Posts Made By: skyfox
Forum: LIVE PLC Questions And Answers April 9th, 2018, 02:17 AM
Replies: 6
Views: 381
Posted By skyfox
Hi George, You do present some valid points....

Hi George,

You do present some valid points. However, about the eggs on my face. It is going to take some time to scrape it off and serve it back to you in a polite manner on clean platter so you...
Forum: LIVE PLC Questions And Answers April 7th, 2018, 06:59 PM
Replies: 6
Views: 381
Posted By skyfox
Looking thru the 1769-SDN Firmware V4.4 Release...

Looking thru the 1769-SDN Firmware V4.4 Release notes, it says enhancements are applicable ONLY to 1769-L3x and 1768-L4x controllers. Mine is a L2x. Is it possible the Rev 4.4 may have inadvertently...
Forum: LIVE PLC Questions And Answers April 7th, 2018, 06:50 PM
Replies: 6
Views: 381
Posted By skyfox
Thanks Ken for the reply. The Tech Article...

Thanks Ken for the reply.

The Tech Article says....

The anomaly is addressed in both the L2y and L3y in V21. It has been addressed for the L3y in V20.018, available for download on Firmware ...
Forum: LIVE PLC Questions And Answers April 7th, 2018, 05:16 AM
Replies: 6
Views: 381
Posted By skyfox
1769-SDN Error code 99 then Err & C1 & C2

I have two identical systems that operate independently of each other. Both are CompactLogix systems with DeviceNet networks using the 1769-SDN Series B module. I designed the systems myself and...
Forum: LIVE PLC Questions And Answers February 12th, 2018, 11:34 PM
Replies: 17
Views: 1,325
Posted By skyfox
Hi Daba, I am doing this with a bit of...

Hi Daba,

I am doing this with a bit of trickery. I came upon the idea after looking at AB's code for logging data in to their CF and SD flash cards. However, I didn't like the idea of having to...
Forum: LIVE PLC Questions And Answers February 10th, 2018, 10:12 AM
Replies: 0
Views: 272
Posted By skyfox
1769-SDN - How to use the module defined Data structure in ladder?

Answered my own question. Didn't realize it was already under the controller Tags section. Sorry couldn't figure out a way to delete the topic.
Forum: LIVE PLC Questions And Answers February 10th, 2018, 09:50 AM
Replies: 17
Views: 1,325
Posted By skyfox
Sorry for the delayed reply. Thank you all for...

Sorry for the delayed reply. Thank you all for your responses. Reason wanting to Disable/Enable this is customer wants an option to log data from 10 tags at a rate of 100 samples a second for a...
Forum: LIVE PLC Questions And Answers January 23rd, 2018, 02:26 PM
Replies: 17
Views: 1,325
Posted By skyfox
Logix5K - Possible to Enable/Disable a Periodic task programmatically?

Can this be done based on a pre-selected condition while the PLC is in Run mode?

(Logix 5K V20 - Compactlogix L43 CPU)
Forum: LIVE PLC Questions And Answers December 4th, 2017, 09:47 PM
Replies: 1
Views: 206
Posted By skyfox
CompactLogix -Fastest Datalog rate to SD Card

1769-L24ER-QB1B CPU / RsLogix 5k V20

Does anyone know the fastest rate data (Float Register data) can be log to the SD card? Can it be done at 10ms intervals?
Forum: LIVE PLC Questions And Answers July 19th, 2017, 12:32 PM
Replies: 6
Views: 422
Posted By skyfox
Hi Dirt, Thanks for the reply. I do not have a...

Hi Dirt,
Thanks for the reply. I do not have a model # at the moment. But the marking said 0-45 (not 75 my mistake) PSI (without the "A"). I am guessing "A" or absolute is implied here.
Forum: LIVE PLC Questions And Answers July 19th, 2017, 01:17 AM
Replies: 6
Views: 422
Posted By skyfox
Scaling a Multi Unit Pressure XMTR. How?

Good day all,

How does one go about scaling a pressure transmitter that indicates both Vacuum and pressure? The transmitter I have has a range of Vacuum to 75 PSI. I am trying to wrap my head...
Forum: LIVE PLC Questions And Answers June 15th, 2017, 06:11 PM
Replies: 53
Views: 4,981
Posted By skyfox
WOW! Seems 50/50. I was hoping for 90/10 sort of...

WOW! Seems 50/50. I was hoping for 90/10 sort of response. Thanks to all of you that replied. I guess more research is needed on the subject.

Cheers!!!!
Forum: LIVE PLC Questions And Answers June 15th, 2017, 03:13 AM
Replies: 53
Views: 4,981
Posted By skyfox
OK to Tie Powersupply Common to Chasis Ground?

Wondering what are the pros/cons of tying Power +24VDC supply Common to chassis (earth) ground. Is it OK to do so? I have seen some control panels where this is done and others without. I have also...
Forum: LIVE PLC Questions And Answers June 12th, 2017, 09:23 PM
Replies: 9
Views: 755
Posted By skyfox
Thanks daba. I was afraid of that. I was...

Thanks daba.

I was afraid of that. I was hoping to avoid that extra step. I eliminated IDX[x,y] array altogether and used a Tag (with a dynamic value) and used that along with a hard coded offset...
Forum: LIVE PLC Questions And Answers June 12th, 2017, 01:57 AM
Replies: 9
Views: 755
Posted By skyfox
One more Clarification...... "Both Data and...

One more Clarification......

"Both Data and IDX arrays have several 100 elements."


Meant to say over 100 elements in the Real World Application and not in the example.
Forum: LIVE PLC Questions And Answers June 11th, 2017, 11:18 PM
Replies: 9
Views: 1,088
Posted By skyfox
Thanks GaryS. You make a valid point and I...

Thanks GaryS.

You make a valid point and I can see how yours might be considerably faster. I would love to find out if both methods can be timed and see how efficient each method is over several...
Forum: LIVE PLC Questions And Answers June 11th, 2017, 11:03 PM
Replies: 9
Views: 755
Posted By skyfox
OK. I may not have explained my problem or what...

OK. I may not have explained my problem or what it is that I am after very clearly. I will give it another go.

This is a much simplified example. (Both Data and IDX arrays have several 100...
Forum: LIVE PLC Questions And Answers June 11th, 2017, 10:20 PM
Replies: 9
Views: 755
Posted By skyfox
\ nhatsen, Thank for the reply. I do...

\

nhatsen,

Thank for the reply. I do not have a Tech connect account any longer as the company is moving away from Rockwell/AB all together. We had 3 Tool kit licenses for the past 14 years....
Forum: LIVE PLC Questions And Answers June 11th, 2017, 05:02 PM
Replies: 9
Views: 755
Posted By skyfox
Indirect Addressing Not Working - Logix 5K

Hello All,

Bit puzzled as to why this indirect address is not working.


IDX[10,10] ' Two dimensional array of Constants
DATA[10] ' One Dimensional array

When indirectly addressing ...
Forum: LIVE PLC Questions And Answers June 11th, 2017, 04:53 PM
Replies: 9
Views: 1,088
Posted By skyfox
Hi GaryS, Now I understand what you were...

Hi GaryS,

Now I understand what you were trying to say. However, I still would like to know if there is a performance advantage over your method vs. the method cwal61 presented. I am sorting 6...
Forum: LIVE PLC Questions And Answers June 11th, 2017, 04:00 AM
Replies: 9
Views: 1,088
Posted By skyfox
GaryS, Thanks for the detailed response. In...

GaryS,

Thanks for the detailed response. In the past I have used a similar approach when displaying min/max values in real time on to an HMI display. However in that instance, I was only...
Forum: LIVE PLC Questions And Answers June 10th, 2017, 10:46 PM
Replies: 9
Views: 1,088
Posted By skyfox
cwal61, Thank you very much. This works...

cwal61,

Thank you very much. This works great. I didn't know you could alter the length that way and assumed control used the immediate value that was entered in to length parameter of the...
Forum: LIVE PLC Questions And Answers June 10th, 2017, 07:33 PM
Replies: 9
Views: 1,088
Posted By skyfox
Help Sorting a Dynamic Array (elements) in Logix 5K

Hello All,

Needing some help with finding Min max values in an array that can have a dynamic element count. The Sort function in Logix 5K only allows an immediate value for length. I am looking...
Forum: LIVE PLC Questions And Answers April 19th, 2017, 01:33 PM
Replies: 2
Views: 265
Posted By skyfox
CompactLogix -Can CF card be used as additional data memory?

Good day all,

Does anyone know if a 1769-L24ER-QB1B's CF card (or any logix cpu for that matter)can be used as additional data (Tag) memory by the cpu?

Thanks.
Forum: LIVE PLC Questions And Answers March 17th, 2017, 03:15 AM
Replies: 9
Views: 1,320
Posted By skyfox
Thank you all. Wow. Three different...

Thank you all.

Wow. Three different perspectives. That is unless I misunderstood Timbert (http://www.plctalk.net/qanda/member.php?u=84880)'s answer. For some reason or another (I tinkered around...
Showing results 1 to 25 of 178

 
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