update value of object

[rocfusion]

Hi,

Is there an grp. script command that will update the value of an object that does not write to the TP or IP bus under any condition.  It ONLY changes the value of the object no matter the value of the object.  I know you have grp.update and grp.checkupdate.  

When you have resident scripts that should change other objects on the event that an groupwrite telegram has been sent to that object AND they also act as the status object.  These scripts will continuously run. Both grp.update and grp.checkupate send back a groupwrite telegram.  Is there something else just to change the value, without messing with the underlying DB.


Many thanks


Roger

[admin]

Can you provide an example of what you are trying to achieve?

[rocfusion]

Hi 

I have the following resident script running, to give the status of a group of lights ( room ).  The second script is an event script for controlling that group of lights.  Now right now I have to use a separate object which responds with the status.  

Code:

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if not client then   -- each group has 3 fields:   -- tag - status object tag   -- output - status output object   -- mode - calculate mode (and/or/avg)   groups = {     { tag= 'cinema', output= '5/2/5', mode= 'avg' },     { tag= 'living', output= '5/3/5', mode= 'avg' },     { tag= 'kitchen', output= '5/4/5', mode= 'avg' },     { tag= 'master', output= '5/5/5', mode= 'avg' }   }   -- time to wait between last telegram from any status in group and update   updatedelay = 0.5   -- object value cache   values = {}   -- object datatype cache   datatypes = {}   -- send update only when value changes   grp.checkupdate = function(alias, value)     if values[ alias ] ~= value then       grp.update(alias, value)     end   end   calc = {}   -- Temperature AVERAGE value   calc['tempavg'] = function(group)     local result, count, value = 0, 0, 0     for _, address in ipairs(group.objects) do       value = values[ address ]       -- number must be in [0..100] range       if type(value) == 'number' then         result = result + value         count = count + 1       end     end     if count > 0 then       result = ((result / count)* 9 / 5) + 32       local fahren= math.floor(result+0.5)       grp.checkupdate(group.output, fahren)     end   end        -- AVERAGE value   calc['avg'] = function(group)     local result, count, switch, value = 0, 0, 0     for _, address in ipairs(group.objects) do       value = values[ address ]       -- number must be in [0..100] range       if type(value) == 'number' then         result = result + value         if value > 0 then          count = count + 1         end       -- boolean true is 100%, false is 0%       elseif type(value) == 'boolean' then         if toboolean(value) then        --   result = result + ( result / count )           switch = switch + 1         end              end     end     if count > 0 then       if result > 0 then         result = math.floor(result / count + 0.5)              end              grp.checkupdate(group.output, result)     elseif switch > 0 then         grp.checkupdate(group.output, 100)       else        grp.checkupdate(group.output, 0)     end   end   -- AND gate   calc['and'] = function(group)     local result = true     for _, address in ipairs(group.objects) do       result = result and toboolean(values[ address ])     end     grp.checkupdate(group.output, result)   end   -- OR gate   calc['or'] = function(group)     local result = false     for _, address in ipairs(group.objects) do       result = result or toboolean(values[ address ])     end     grp.checkupdate(group.output, result)   end   -- prepare each group   for _, group in ipairs(groups) do     object = grp.find(group.output)     -- cache output status object value and datatype     values[ object.address ] = object.data     datatypes[ object.address ] = object.datatype     group.output = object.address     -- group input status object list     group.objects = {}     -- find all status objects and cache values and datatypes     objects = grp.tag(group.tag)     for _, object in ipairs(objects) do       values[ object.address ] = object.data       datatypes[ object.address ] = object.datatype       table.insert(group.objects, object.address)     end     -- force update on first run     group.timer = 0     -- calc function reference     group.fn = calc[ group.mode ]   end   -- handle group writes   function eventhandler(event)     local dst, datatype     dst = event.dst     datatype = datatypes[ event.dst ]     -- unknown object, stop     if not datatype then       return     end     values[ dst ] = dpt.decode(event.datahex, datatype)     -- check if any group needs to be updated     for _, group in ipairs(groups) do       for _, address in ipairs(group.objects) do         if address == dst then           group.timer = updatedelay         end       end     end   end   require('genohm-scada.eibdgm')   client = eibdgm:new({ timeout = 0.25 })   client:sethandler('groupwrite', eventhandler) end tsec, tusec = os.microtime() client:step() delta = os.udifftime(tsec, tusec) -- check if any group has an active timer for _, group in ipairs(groups) do   timer = group.timer   if timer then     timer = timer - delta     -- timer expired, run calc function     if timer <= 0 then       group.fn(group)       timer = nil     end     group.timer = timer   end end

Event script

Code:

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if (event.type=='groupread') then   grp.response(event.dst,grp.getvalue(event.dst)) elseif (event.type=='groupwrite') then   grp.write('0/2/104',grp.getvalue(event.dst),dt.scale)   grp.write('0/2/105',grp.getvalue(event.dst),dt.scale)   if(event.getvalue()==0) then     grp.write('0/0/107',false,dt.bool)   else     grp.write('0/0/107',true,dt.bool)   end end

[Daniel]

When you use Virtual groups then the value is not sent to TP or IP. For normal objects write will send to TP and IP , where update will send to IP but not to TP.

[admin]

You can also use grp.sender / event.sender to block event script execution when a different script changed the value. See this: https://forum.logicmachine.net/showthrea...5#pid29215