Double Word to an hmi for 6 figure value - PLCS.net

randyrjohnson2002 · March 23rd, 2009, 01:04 PM

I have a micrologix 1200 and i am trying to calculate 5 differnet counters that will end up adding to 200,000 on a bejeir hmi which will handle the integer level. The problem is i cant move and integer from the plc of that value. I know there is a way to make it a double word to be able to go to that number. I just have not figured it out yet. is there anyone that can give an example of ladder to be able to do it?
thank you very much for your time and have a great day.

TConnolly · March 23rd, 2009, 01:27 PM

Instead of using five different counters, use a one-shot and an add instruction with an L type address.

XIC B3/0 ONS B3/1 ADD 1 L9:0 L9:0.

L type elements are 32 bit doubles. L9:? addresses can count up to 2,147,483,647.

bwiring · March 23rd, 2009, 04:04 PM

i don't see a type "l" element in rslogix. can you tell me how to get to a type"l" element

bernie_carlton · March 23rd, 2009, 04:12 PM

On the left hand side of your screen rioght-click on 'Data Files'. Select 'New'. Under 'Type' select 'Long'. Enter the number of elements you want. Select OK.

bwiring · March 23rd, 2009, 04:16 PM

thanks.....good info to know

randyrjohnson2002 · March 24th, 2009, 06:18 AM

Thank you gentleman very much for you help!!!!1

irondesk40 · March 24th, 2009, 06:35 AM

Man, learn something new everyday. I had been trying to do this same type of thing yesterday and was confused.
Thanks for advice, great site, i have the ab tech connect support agreement, but almost all the time, can come on this site and find the answer while I am on hold for them.

TConnolly · March 24th, 2009, 08:50 AM

Pop quiz...

Why is it better to use an L address (double integer) instead of an F address (floating point) when counting very large values?

rdrast · March 24th, 2009, 08:54 AM

Quote:

Originally Posted by Alaric

Pop quiz...

Why is it better to use an L address (double integer) instead of an F address (floating point) when counting very large values?

Because eventually adding 1 will do nothing?

X + 1 = X ?

At least the 32 bit integer will roll-over, which is detectable, so you can add one to yet another higher order counter (if needed).

March 23rd, 2009, 01:04 PM	#1
randyrjohnson2002 Member Join Date: Sep 2008 Location: rockford,il Posts: 26	Double Word to an hmi for 6 figure value I have a micrologix 1200 and i am trying to calculate 5 differnet counters that will end up adding to 200,000 on a bejeir hmi which will handle the integer level. The problem is i cant move and integer from the plc of that value. I know there is a way to make it a double word to be able to go to that number. I just have not figured it out yet. is there anyone that can give an example of ladder to be able to do it? thank you very much for your time and have a great day.

March 23rd, 2009, 01:27 PM	#2
TConnolly Lifetime Supporting Member Join Date: Apr 2005 Location: Salt Lake City Posts: 5,409	Instead of using five different counters, use a one-shot and an add instruction with an L type address. XIC B3/0 ONS B3/1 ADD 1 L9:0 L9:0. L type elements are 32 bit doubles. L9:? addresses can count up to 2,147,483,647. __________________ True craftsmanship is only one more power tool away. That's the beauty of processors, they don't have emotions they just run code - The PLC Kid.

March 23rd, 2009, 04:12 PM	#4
bernie_carlton Lifetime Supporting Member + Moderator Join Date: Apr 2002 Location: Yakima, Washington Posts: 4,595	On the left hand side of your screen rioght-click on 'Data Files'. Select 'New'. Under 'Type' select 'Long'. Enter the number of elements you want. Select OK. __________________ Controlling outputs is the PLC's way of getting its inputs to change. www.thePLCguy.com

March 24th, 2009, 08:50 AM	#8
TConnolly Lifetime Supporting Member Join Date: Apr 2005 Location: Salt Lake City Posts: 5,409	Pop quiz... Why is it better to use an L address (double integer) instead of an F address (floating point) when counting very large values? __________________ True craftsmanship is only one more power tool away. That's the beauty of processors, they don't have emotions they just run code - The PLC Kid.

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March 23rd, 2009, 04:04 PM	#3
bwiring Member Join Date: Nov 2005 Location: mpls. mn. Posts: 45	i don't see a type "l" element in rslogix. can you tell me how to get to a type"l" element

March 23rd, 2009, 04:16 PM	#5
bwiring Member Join Date: Nov 2005 Location: mpls. mn. Posts: 45	thanks.....good info to know

March 24th, 2009, 06:18 AM	#6
randyrjohnson2002 Member Join Date: Sep 2008 Location: rockford,il Posts: 26	Thank you gentleman very much for you help!!!!1

March 24th, 2009, 06:35 AM	#7
irondesk40 Member Join Date: Jan 2008 Location: nc Posts: 323	Man, learn something new everyday. I had been trying to do this same type of thing yesterday and was confused. Thanks for advice, great site, i have the ab tech connect support agreement, but almost all the time, can come on this site and find the answer while I am on hold for them.

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