array of group addresses

[admin]

Assign a common tag to the required objects then use this script:

Code:

value = 1
objects = grp.tag('my_tag_name')

for _, obj in ipairs(objects) do
  res = obj:checkwrite(value)
  if res then
    os.sleep(0.1)
  end
end

A better approach is to assign a common group address to all KNX devices because sending many telegrams at once can overflow the bus. The script above has a delay between each telegram to prevent this but it means that some devices will receive the value later.