Rules for Element State Messages

rule "switch state for unknown element"
when
    there is a switch state
    but no matching element
then
    Element state error "switch state for unknown element"
    discard the state
end

rule "switch state update"
when
    there is a switch state
    and a matching element
then
    update the element 
    - setting faulty from the state message
    - setting clear from the state message
    - setting the position from the state message
    discard the state
end