scripitng

[buuuudzik]

Good evening, I would like your help about a event base script.
My client wants the lights to flash quickly (turn on and off) whenever a zone is breached. Can someone assist me?

Could you clarify what you mean by “quickly”? How many zones are there? How many can be breached simultaneously?

The best solution is using sequencers in KNX modules, which can be triggered by a boolean object. If you plan to send many commands simultaneously over the TP bus, it could, of course, negatively impact the bus’s performance.

However, if we are talking about a few zones, sometimes controlled simultaneously, a good solution would be:
an event-based script that reacts to a change in the status of a given zone, checks if any zone is active, and then activates/deactivates a resident script. This script toggles the lighting in the respective zone and waits for a set time before toggling again.

---

It could be a good start:

Create objects with such names:
Light sequence_1_status with tag light_sequencer
Light sequence_1_cmd for light control

Number 1 is an index of your zone. Of course you can change this name but you need to tweak also the script to use another pattern.

Event script run on tag "light_sequencer":

Code:

if toboolean(event.getvalue()) then
  script.enable("Light sequencer")
end

Resident script 0s with a name "Light sequencer":

Code:

if not initialized then
  initialized = true
  value = false
end

-- Toggle value
value = not value

-- Check all zones statuses and toggle commands for enabled zones
all_zones = grp.tag("light_sequencer")

function getZoneCmdName(statusName)
  id = statusName:match('_(%d+)_status')
  return 'Light sequence_' .. tostring(id) .. '_cmd'
end

function toggleZone(statusName, value)
  cmdName = getZoneCmdName(statusName)
  grp.write(cmdName, value)
end

-- If all zones are disabled, disable the script
local should_be_enabled = false
for k,v in ipairs(all_zones) do
  cmdName = getZoneCmdName(v.name)
 
  log(k, v.address, v.name, v.value)
  if toboolean(v.value) == true then
    should_be_enabled = true
    grp.write(cmdName, value)
  else
    -- Switch of a zone light if its enabled
    if toboolean(grp.getvalue(cmdName)) == true then
      grp.write(cmdName, false)
    end
  end
end

-- Switch off all lights and disable the script if none zone is enabled
if not should_be_enabled then
  script.disable(_SCRIPTNAME)
end

-- Wait a selected time for the next change in seconds
sleep(1)