grp.update()

[Kapudan]

Hi all,

I wrote an event-base script, triggered by 1/1/1, to be executed only if even 1/1/2 is true.

group address/tag = 1/1/1 (trigger)


To avoid the script being retriggered during its execution I thought to use this code:

a = grp.getvalue(1/1/1)
b = grp.getvalue(1/1/2)

if (a and b) then
  grp.update('1/1/2', 0)
  ....
  ....actions
  ....
  grp.update('1/1/2', 1)
end

I have two questions:

1) is there a better way to avoid retriggering (i.e. enable/disable script)?

2) why I can see a telegram, on the ETS group monitor, in conjuction with each update instruction even if with grp.update() 
"no KNX/TP telegram is sent, only internal value is changed"?

Thanks