TIA Portal #18: Move instruction (Part 1)

[@carlosgallego1076]

Thanks for the video. Very interesting.

[@industrial_automation]

You're very welcome.

[@nelsonpantaleon7751]

Hello sir, can ask about pos input in serialize block what does it mean about pos because use move 0 in md2 and md8 whats the useful of pos input thank you

[@industrial_automation]

Hi nelson, Because we can not use a constant for POS, it means we can not directly write 0 to the POS, so I have to use a variable. This variable must be double integer so we need to use MD. Ususally we use a move operation to copy a constant value to a variable. That's why I used MD2 with a move.
MD8 is used in a same way for desrialize.

[@nelsonpantaleon7751]

@@industrial_automation ok sir it means sir that POS input always double integer 0 never 1,2,3,or etc. That is what my question thank you sir

[@industrial_automation]

@@nelsonpantaleon7751it can be also 1,2, 3, ...
if you want to start to write your values from index 0 you write it 0 if index 1 write 1 and ...