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Hai Extended Range Temp Sensor Programming


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#1 knowinnothin

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Posted 27 September 2010 - 11:19 PM

Hello Everyone,

I have a quick question that i cant seem to figure out. Can someone please explain the operation of the low and high setpoints for the Hai 31A00-7. I'm trying to control an electric heater and am not getting consistent results.

Thanks in advance everyone.

#2 cornutt

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Posted 28 September 2010 - 09:32 AM

The zone that the temperature sensor is connected to has a "secure / not ready" status, like all other zones do. The setpoints determine this status. When the temperature is in between the setpoints, the zone status is "secure". When it goes below the low setpoint, or above the high setpoint, the zone status is "not ready". You can then write code that looks for the temperature sensor zone status.

Note that the setpoints will be forgotten anytime the controller is powered down long enough to make it forget the time of day. I put some code in mine that restores them after a system reset. I'll post that tonight (don't have access to the system at work).




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