Siemens OPN DB[MW]?

[ylade]

Hi All,

I wish to Open a DB that will be constantly changing.
Eg OPN DB [MW] My code will look at the data words/Dwords/Stings from this DB. However, I also need the Data locations to change for example
L 10
T MW 20
L 44
T MW 30

OPN DB [MW20] // Opn Data Block 10 ----THis Seems possible
L DBD [MW 30] // L Double Word 44 ----- THis does no?

Any Ideas?
THanks

 

[Thim]

Try this

L 44
SLD 3
T MD 30

L DBD[MD30]

Be carefull MW32 can't be used somewhere else in the program

 

[userxyz]

Stl

U need to use the adress register.

Some SLD3 stuff.

L MW30
SLD3
LAR 1
L [AR1,p#0.0]


I think it's something like that, if not, STL specialists on this forum will help you further.

Hi All,

I wish to Open a DB that will be constantly changing.
Eg OPN DB [MW] My code will look at the data words/Dwords/Stings from this DB. However, I also need the Data locations to change for example
L 10
T MW 20
L 44
T MW 30

OPN DB [MW20] // Opn Data Block 10 ----THis Seems possible
L DBD [MW 30] // L Double Word 44 ----- THis does no?

Any Ideas?
THanks

 

[Thim]

What combo writes
Could also work if you do

L DBD[AR1,P#0.0]

 

[userxyz]

kay

yes, but I do like your indirect code more. (sounds *** kissing)

I don't use indirect adressing much as you all can see .

 

[Thim]

I just used the code like he did
I don't really prefer one or the other.
I would say it depends on what his is triing to do. ;-)