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CODESYS Creating a Subscriber


MQTT "/status" Topic Overview (1 topic)

/statusbool
PLC

Should be published at the start of every update so CDP can detect loss of connection. Value should always be 1.

MQTT "/settings" Topic Overview (32 topics)

ebbflowauto
TopicDatatypeTypical ValuesPublisherDescription
/settings/system/flowtimefloat600-1320CDPStudioHow long the keep the system in flow state in hours.
/settings/system/ebbtimefloat60-240CDPStudioHow long the keep the system in ebb state inhours.
/settings/system/flowtimefloat600-1320CDPStudioHow long the keep the system in flow state in hours.
/settings/system/ebbtimefloat60-240CDPStudioHow long the keep the system in ebb state inhours.
/settings/ebbflow/autobool1 or 0CDPStudio

Whether ebb and flow is controlled automatically (1) or manually (0)

/settings/ph/targetfloat5.8-6.0CDPStudioTarget PH value
/settings/ph/maxfloat6.0-6.2CDPStudioMaximum allowed PH value before system regulates
/settings/ph/minfloat5.6-5.8CDPStudioMinimum allowed PH value before system regulates
/settings/ph/autobool0 or 1CDPStudioWhether PH is controlled automatically (1) or manually (0)
/settings/ec/targetfloat11-12CDPStudioTarget EC value
/settings/ec/maxfloat12-12.5CDPStudioMaximum allowed EC value before system regulates
/settings/ec/minfloat11.5-12CDPStudioMinimum allowed EC value before system regulates
/settings/ec/autobool0 or 1CDPStudioWhether EC is controlled automatically (1) or manually (0)
/settings/air/temp/targetfloat20.5-21.5CDPStudioTarget air temperature
/settings/air/temp/maxfloat21.5-22CDPStudioMaximum allowed air temperature system regulates
/settings/air/temp/minfloat20-20.5CDPStudioMinimum allowed air temperature before system regulates
/settings/air/temp/autobool0 or 1CDPStudioWhether air temperature is controlled automatically (1) or manually (0)
/settings/air/humidity/targetfloat65-75CDPStudioTarget humidity%
/settings/air/humidity/maxfloat75-80CDPStudioMaximum allowed humidity% before system regulates
/settings/air/humidity/minfloat60-65CDPStudioMinimum allowed humidity% before system regulates
/settings/air/humidity/autobool0 or 1CDPStudioWhether EC is controlled automatically (1) or manually (0)
/settings/air/co2/targetfloat1000-2000CDPStudioTarget CO2 ppm
/settings/air/co2/maxfloat2500-3000CDPStudioMaximum allowed CO2 ppm before system regulates
/settings/air/co2/minfloat500-1000CDPStudioMinimum allowed CO2 ppm before system regulates
/settings/air/co2/autobool0-1CDPStudioWhether air co2 ppm is controlled automatically (1) or manually (0)
/settings/light/light1/timeonstring960-1320CDPStudioHow long to keep light 1 on. Convert to time in CODESYS with STRING_TO_TIME()
/settings/light/light1/timeontimeoffstring120-480CDPStudio

How long to keep light 1 off. Convert to time in CODESYS with STRING_TO_TIME()

/settings/light/light1/timeon

string

float


960-1320CDPStudioHow long to keep the light 2 on in hours. Convert to time in CODESYS with STRING_TO_TIME()
/settings/light/light1/timeofffloatstring120-480CDPStudio

How long to keep the light 2 off in hours. Convert to time in CODESYS with STRING_TO_TIME()

/settings/light/autobool0 or 1CDPStudio

Whether lights are controlled automatically (1) or manually (0)

/settings/valve/exercise/statebool0 or 1CDPStudio

Whether valves should be exercised to avoid debris buildup and relubricate (1) or not (0)

/settings/valve/exercise/timefloat0 or 1CDPStudio

Time interval of how often to exercise the valves given in hours

































































































MQTT "/override" Topic Overview (13 topics)

TopicDatatypeTypical RangePublisherDescription
/override/valve/tank1/ebbint0, 1, 2CDPStudioOverrides the tank 1 drain/ebb valve. 0 = Off, 1 = On, 2 = Auto.
/override/valve/tank1/flowint0, 1, 2CDPStudioOverrides the tank 1 fill/flow valve. 0 = Off, 1 = On, 2 = Auto.
/override/valve/tank2/ebbint0, 1, 2CDPStudioOverrides the tank 2 drain/ebb valve. 0 = Off, 1 = On, 2 = Auto.
/override/valve/tank2/flowint0, 1, 2CDPStudioOverrides the tank 1 fill/flow valve. 0 = Off, 1 = On, 2 = Auto.
/override/valve/threewayint0, 1, 2CDPStudioOverrides the three-way valve. 0 = Off, 1 = On, 2 = Auto.
/override/light1int0, 1, 2CDPStudioOverrides the light 1. 0 = Off, 1 = On, 2 = Auto.
/override/light1int0, 1, 2CDPStudioOverrides the light 2. 0 = Off, 1 = On, 2 = Auto.
/override/tank1/startebbbool0, 1CDPStudioSends a pulse to initiate the ebb process for tank 1
/override/tank1/startflowbool0, 1CDPStudioSends a pulse to initiate the flow process for tank 1
/statusboolPLC

Should be published at the start of every update so CDP can detect loss of connection. Value should always be 1.

/override/tank2/startebbbool0, 1CDPStudioSends a pulse to initiate the ebb process for tank 2
/override/tank2/startflowbool0, 1CDPStudioSends a pulse to initiate the flow process for tank 2
/override/startprocessbool0, 1CDPStudioSets the process state. Should not be a pulse.

/override/pump

int0, 1, 2 CDPStudioOverrides the pump. 0 = Off, 1 = On, 2 = Auto.

MQTT "/sensor" Topic Overview (6 topics)

TopicDatatypeTypical RangePublisherDescription
/sensor/
/sensor/
water/ecfloat
PLCWater EC measurement.
/sensor/water/phfloat
PLCWater PH measurement.
/sensor/water/tempfloat
PLCWater temperature measurement.
/sensor/air/tempfloat
PLCAir temperature measurement.
/sensor/air/humidityfloat
PLCAir humidity measurement.
/sensor/air/co2float
PLCAir CO2 measurement.

MQTT "/system" Topic Overview (8 topics)

TopicDatatypeTypical RangePublisherDescription
/system/
light
light1/statebool
PLCLight state, 0 = off, 1
when on, 0 when off
= on.
/system/light2/statebool
PLCLight state. 0 = off, 1 = on
/system/light1/timeRemainingfloat
PLCTime until light 1 toggles on or off, given in hours.
/system/
light
light2/timeRemainingfloat
PLCTime until light 2 toggles on or off, given in hours.
/system/tank1/statebool0, 1PLC

Tank 1 current state. 0 = ebb, 1 = flow

/system/tank2/statebool0, 1PLC

Tank 2 current state. 0 = ebb, 1 = flow

/system/tank1/timeRemainingbool0, 1PLC

Time remaining of tank 1 state. Given in hours.

/system/tank2/timeRemainingbool0, 1PLC

Time remaining of tank 2 state. Given in hours.