grp.create()

[fleeceable]

What is the best way, when using grp.create, to check if the GA is allready created? I'm thinking of making a dynamic script, so that when I add new GA's and tag them correctly the script will generate new virtual GA's.

I use function block like this when automatically generating addresses in my programs...

Code:

--**********CREATE GROUP ADDRESSES******************
function createga(groupaddress,datatype,name)
  exist = grp.alias(groupaddress)
  if exist == nil then
    address = grp.create({
    datatype = datatype,
    address = groupaddress,
    name = name,
    comment = 'Automatically created object',
    units = '',
    tags = { },
    })
  end
end

On some systems I use user script where I put all needed group addresses (so they all are on the same file and it's quite easy to change them)..

User script (HEATING_config):

Code:

Main_GA = '33'

group_address_for_frontend_update = '/0/0'        --If any modifications on values or chart must be updated, this variable is used.
group_address_for_backend_update = '/0/1'        --If any modifications on values or data file must be updated, this variable is used.

Scheduled/Resident/Event script:

Code:

require('user.HEATING_config')
createga( Main_GA .. group_address_for_backend_update, dt.bool,'HEATING - Update backend')
createga( Main_GA .. group_address_for_frontend_update, dt.bool,'HEATING - Update frontend')

--DO SOMETHING

Hope this helps...