pointer application examples

Aret

6 bytes are required for following 2 for block number and 4 for pointer.
In your case it would be like 33+P#DBX32.0. But you can't use pointer, consisting of 6 or 10 bytes directly - you can use only 4-byte pointer. So in youк case it would be like
OPN DB33
L 32
SLD 3 //ACCU now contains P#32.0
T #tempptr //temp DINT variable
L DBW[#tempptr] // you read DB33.DBW32

Jtrainor

Hi

I realise this post has been here a while but I am looking at a few pointer applications and it has been helpful to see your examples.

I have 1 question- in thelines:
L 32
SLD 3 //ACCU now contains P#32.0

What is the shifl left double word command doing to the value 32 and why is this done?

Thanks again

JT