pointer in a db char array

Do you mean you have a pointer to an array of chars stored in a DB and that the pointer is passed to a function and you want to process the array of chars in the function ?
 
Is that a yes or no to my previous post ?

Post the DB as a screen shot showing it containing the pointer value.
 
The variable name is ch_ar and it is an array of bytes, not chars. The four bytes at DB1.DBD2 contain an area pointer so to access the data you load the area pointer into an address register and then access the data.

charp.JPG
 

Similar Topics

P
Siemens step7 - why you need SLD 3 before loading word into AR1 as a pointer?
I have a word in some DB which I want to load to AR1 and use as a pointer. In order to do this I need to write L DBxy.DBW xy SLD 3 LAR1 I...
Replies
3
Views
526
Lare
L
J
How to access a Codesys pointer via OPC UA
I am trying to access the value of a pointer via OPC UA in Codesys. I can share it directly and in a struct but I cant access the value of it when...
Replies
5
Views
1,596
AustralIan
A
A
S7 Input pointer inside multi instance
Why does my deconstruction of the input pointer only work with its own instance DB not inside the multi instance FB...See .doc The pointer at the...
Replies
8
Views
2,328
L D[AR2P#0.0]
L
C
TiaPortal data pointer format
Hi All, in many library function of TiaPortal some data must be write using the pointer format........ eg.: P#DB90.DBX0.0 WORD 10 is it...
Replies
5
Views
2,817
cagliostro
C
A
s7 pointer sfc20 ret_val W16#8329
I have a very strange issue and I cannot figure out why it is not working. I read input of type pointer and store it to local temp type any. I...
Replies
4
Views
1,922
adamplc
A
Back
Top Bottom