Write in a Single Bit of a Word

[UfficioTecnicoEE]

Thank you very much both!

So this script is correct if I wanna set Bit0 of register 1280 to 0 when 32/1/1's value is 1

Code:

function setbit(value, bitnr)
  local mask = bit.lshift(1, bitnr)
  return bit.bor(value, mask)
end

value = 0

if grp.getvalue('32/1/1') then
  value = setbit(value, 0)
end

log(value)

mb = require('mbproxy').new()
mb:setslave(1)

-- set register at address 1000 to 123
mb:writeregisters(1280, 0)


mb:close()

And another question the 123 near the code below what value is??

Code:

-- set register at address 1000 to 123