PLC5 Conversion Indirect Addressing: #N[N187:4]:[N187:5]

jk_

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Can anyone explain to me what this would mean in a COP instruction?

Source: #N[N187:4]:[N187:5]

Dest: #N[N187:1]:0

Length: 20

I am doing a PLC5 conversion to rslogix5000 and some (most) of it has been a nightmare -.-
 
jk_ said:
Can anyone explain to me what this would mean in a COP instruction?

Source: #N[N187:4]:[N187:5]

Dest: #N[N187:1]:0

Length: 20

I am doing a PLC5 conversion to rslogix5000 and some (most) of it has been a nightmare -.-
Click to expand...

Lets say N187:4=28 , N187:5=45 and N187:1=60

then the copy instruction would be like

Source N28:45
Dest N60:0

So if the length is 20, it will copy N28:45 to N60:0 until N60:19

hope you understood

respect the migration you basically have 2 options.

1st- Create a 2 dim array and stay with that code. This one will probably cnsume a lotmore memory
2nd- Modify the code to reach the same objective
 
Last edited:
any ideas?

joaco1993 said:
Lets say N187:4=28 , N187:5=45 and N187:1=60

then the copy instruction would be like

Source N28:45
Dest N60:0

So if the length is 20, it will copy N28:45 to N60:0 until N60:19

hope you understood

respect the migration you basically have 2 options.

1st- Create a 2 dim array and stay with that code. This one will probably cnsume a lotmore memory
2nd- Modify the code to reach the same objective
Click to expand...

Thanks!
I figured it out by cross-referencing "#N[N187:4]:[N187:5]" and "#N[N187:1]:0" and seeing where it took me.
This is what I have so far:

Source: "SorterData.B.LugData[SorterData.WS.TargetRecNum].Word[0]"
Dest: Not sure how I want to do this yet
Length: 20

Since there are different UDT tags which the destination will be copied to.. any ideas?
 
Last edited:
Why don’t you use the conversion tool? It will convert that for you automatically. It may not look good, but will most likely work.

After you convert, then go through and cleanup and redo the areas you don’t like.
 
For future reference, a hint for those wondering about indirect addresses.....

  1. Right-click on a blank area of the ladder display and select Properties
  2. Click on the Address Display tab
  3. Select the checkbox for "Display Value for Indirect Address"

This will allow you to see the address that is actually being used. From the example above you would see the original

N[N187:4]:[N187:5]

Changed to.....

N[28]:[45]

Then if you hover your cursor over the address you would see the original address as a tooltip.

OG
 
Its been a long time since I've used Logix 5. Does the hove thing work the other way? That is, if I hover over N187:4 in N[N187:4]:[N187:5], do I see the value of N187:4, do I see the referenced value from N[N187:4]:[N187:5] or do I see nothing?

Keith
 

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