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AN36: IP Thermostat with a Web interface
Poseidon can be used for monitoring over an IP network, or as a thermostat or hygrostat. Application Note 36 describes the available local / remote thermostat function options and the Poseidon unit setup.
Any Poseidon unit with relay outputs can be used as a thermostat:
When a local condition is used to control an output, the Poseidon unit works as a thermostat or hygrostat. The input can be a temperature sensor (thermostat), humidity sensor (hygrostat), or even a contact. The output switching threshold does not depend on the sensor's "SafeRange". Therefore, the Poseidon can, for example, turn on additional cooling at 30°C and send an e-mail alert at 35°C.
The heating is switched on if the temperature is too low, a fan is switched on if the temperature is too high. Works even without a network connection.
Setting up this configuration
Remote alerts and alarms
Poseidon works as a thermostat but still retains the e-mailing and SNMP Trap functionality. A frequently requested feature – alerting an operator to excessive temperature with a pop-up message – can be implemented with the free version of the PD Trigger application.
The thermostat function can work over an IP network, too. With Box-2-Box mode and SNMP Traps, an input sensor can be interconnected with an output of another device. Only a Damocles unit can receive SNMP traps.