AB programming help

jethro

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J

Join Date

Jun 2010

Location

White House, Tn

Posts

1

• Jun 23, 2010

• #1

I have an Allen Bradley MicroLogix 1400. I am trying to make a counter to count to 5,000,000 (5 million) I also have a HMI that I am trying to display this on. I know how to make the counters count up to 32767 and beyond.. My promblem is how do I display this info on the HMI??? Thanks

 

Mickey

Lifetime Supporting Member

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May 2003

Location

Palmdale,Ca

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10,656

• Jun 23, 2010

• #2

Does your HMI support floating point data? If so then use an add instruction to count-up.

 

Kidblue

Lifetime Supporting Member

Join Date

May 2003

Location

Worcester

Posts

698

• Jun 23, 2010

• #3

As an alternative to the above, the ML1400 does support LONG (or double word) data types...

 

TConnolly

Lifetime Supporting Member

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Apr 2005

Location

Salt Lake City

Posts

6,152

• Jun 23, 2010

• #4

The ML1400 also supports the Long data type for 32 bit integers. Define a file type L, eg L9. Then use an add in conbination with an ons instruction. The Long data type will support integers to 2,147,483,647

----] [-------[ONS]------------+-ADD-----------+

                               |Source A   L9:0|

                               |Source B      1|

                               |Dest       L9:0|

                               +---------------+

 

gbradley

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Apr 2002

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Corona, Ca.

Posts

1,637

• Jun 29, 2010

• #5

You can put two numeric data displays right next to each other.
Wen the count value gets to 1000 add one to the 1000's value displayed in the left data display. Clear the original value and start counting again.
It's not beautiful, but it works.
Of course that will only display 32.7 million.