PID regulator

[tomnord]

Code:

User library tratec_PID:126: attempt to perform arithmetic on local 'setpoint' (a boolean value)
stack traceback:
User library tratec_PID:126: in function 'compute'
User library tratec_PID:110: in function 'run'

What does this error mean?

Call:

Code:

if not pTV then
  pTV = PID:init({
    --manual   ='',                    -- Setter PID i manuell ved "1"
    kp            = 1,           -- P-Bånd
    ki            = 0.4 ,          -- I-Tid
    kd            = 1,              -- D-Tid
    current     = TV_vav,                --Faktisk Verdi
    setpoint     = TV_vav_SP,                        --Settpunkt
    inverted     = true,                --Inverterer utgangen
    min             = 0,                -- Minimum utgangssignal
    max            = 100,                -- Maksimum utgangssignal 
    output         = '33/1/6'                 --Pådrag
  })
end

-- run algorithm
pTV:run()
log(pTV)