Histograms

[LStewart]

Is there a way to do a contact histogram on two different bits at the same time?

Thanks ahead of time.

LS

I guess I should add that this is a PLC5.

 

[Mickey]

Yes, you can use a whole word if you want. All 16 bits.See the online
help. For RSLogix5.

 

[Ron Beaufort]

"packing" the data ...

I’ve got a hunch that this is what you’re asking about ... if the bits that you’re interested in aren’t all located in the same word, then you can use the following programming technique to “pack” them together ...

 

 I:030/5          B3:3/0 

---] [-------------( )—

 

 

 I:021/1          B3:3/1

---] [-------------( )--

 

 

 O:030/7          B3:3/2

---] [-------------( )—

etc. ... etc. ... for a total of sixteen bits ...


then you can monitor the sixteen-bit word B3:3 with your histogram ... it ain’t glamorous ... but it might be just what you need ...