OPII input zones

[PaulD]

As far as I can determine, none of the Omni Pro II zones can be configured to read voltage levels from a sensor so you can use a specific voltage level as a trigger in a command. At first I thought the temperature sensors might be set up that way but I discovered that the OPII reads a frequency level (not voltage level) from the temperature sensor and then converts that to a temperature level for system use. I have not discovered what method is used for the humidity sensor. Does the humidity sensor report a voltage level or something else?

If there is no method to directly measure a voltage level (typically under 5VDC) with the OPII, what methods/equipment could I use to trigger actions based on specific voltage levels? I suspect there is some device out there that could read the voltage levels on a sensor and send a RS232 message to an OPII serial port so I could use the message as a trigger. I am not familiar enough with the potential pieces to this puzzle to create my own solution. Howerver, I am good at following directions if I get pointed in the right direction.

 

[ASIHome]

Paul,

If you do an Every XXX as the trigger, you can watch for a Zone Loop Reading as a conditional. This should allow you to read a voltage sensor. You just have to figure out what the voltage to loop reading conversion is.

 

[PaulD]

If you do an Every XXX as the trigger, you can watch for a Zone Loop Reading as a conditional. This should allow you to read a voltage sensor. You just have to figure out what the voltage to loop reading conversion is.

I found info on HAI Knowledge Base that says all Zone Inputs are digital (not analog). This tells me that zones are not capable of reading an analog voltage level as suggested. When I look at the Zone Loop Reading, it allows me to set the reading from 1 -255 which tells me I would need to convert any analog voltage levels to a 1-255 digital value to input it to a zone. Am I missing something here?

 

[ASIHome]

Paul,

There was a note in the 3.0 release notes about now being able to read voltage. I'll try and find it.