CaspianSage
Member
Good Afternoon
First I want to thank all of your regulars that volunteer so much of your time. It is so much appreciated that you take the time out of your day to help others. It really is quite a testimony to your selflessness.
I hope I am posting this in the right place. my apologies if I am not.
I am trying to save some historical data for just a few days that resides in floating point files.
F8:0, 1 AND 2
I want to copy that data at midnight to: For example: 10 days of history to
F8:0 to F17:0, 1, 2
F8:1 TO F18:0 1 AND 2
F8:2 TO F19:0 ,1 AND 2
and so on...
I want to keep 10 days of data. for each. I would not necessarily use three different files(ie, 17, 18, and 19) unless I have to. I just showed it that way to keep this clear for the purpose of illustration.
Since a FFL will not accept floating point and copy shoves everything in one rung transition I am using several rungs with MOV instructions to do this with each one moving a different word a second apart using the PLC RTC. Doing this so I make sure the data I want is moved and not overwritten.
Surely there is a better way isn't there?
Thank you, I hope I am clear. I am using AB PLC 5/11 and 20s enhanced PLCs with RS Logix 5.
First I want to thank all of your regulars that volunteer so much of your time. It is so much appreciated that you take the time out of your day to help others. It really is quite a testimony to your selflessness.
I hope I am posting this in the right place. my apologies if I am not.
I am trying to save some historical data for just a few days that resides in floating point files.
F8:0, 1 AND 2
I want to copy that data at midnight to: For example: 10 days of history to
F8:0 to F17:0, 1, 2
F8:1 TO F18:0 1 AND 2
F8:2 TO F19:0 ,1 AND 2
and so on...
I want to keep 10 days of data. for each. I would not necessarily use three different files(ie, 17, 18, and 19) unless I have to. I just showed it that way to keep this clear for the purpose of illustration.
Since a FFL will not accept floating point and copy shoves everything in one rung transition I am using several rungs with MOV instructions to do this with each one moving a different word a second apart using the PLC RTC. Doing this so I make sure the data I want is moved and not overwritten.
Surely there is a better way isn't there?
Thank you, I hope I am clear. I am using AB PLC 5/11 and 20s enhanced PLCs with RS Logix 5.