Application Notes; Programming (For Push Button) - Delta Controls RTS-20 Series Installation & Application Manual

Room Temperature Sensor RTS-20xxx (Rev 3.0) Installation & Application Guide

Application Notes

OPERATION
The temperature sensing element and the push-button are on the same circuit. The push-
button simply shorts the sensing element causing the temperature to read the highest
value set in the scale range of the controller. Programming must be used to interpret this
short as a depression of the push-button and not an actual high temperature. See the
Programming section for further details.

PROGRAMMING (for Push button)

The following program is an example of how to read the temperature of the Room
Temperature Sensor without the pushbutton interfering.
Objects (created in the same panel that the RTS is connected to)
AI1 = RTS_20JP**
AV1 = Room_Temp
BV1 = Push_Button
**It is recommended that the Filter value in the AI be set to a lower value (i.e. 20)
so that quick push-button presses are not missed by the controller.
GCL Programming
// Determine if Push-Button has been pressed and ignore open
// circuits
If ((RTS_20JP > 0) OnFor 5S) And (RTS_20JP > Room_Temp + 2) Then
Push_Button = On
End If
If (Push_Button OnFor 5S) Then
Push_Button = Off
End If
// Ensure Push-Button does not interfere with temperature reading
If (Push_Button OffFor 2S) Then
Room_Temp = RTS_20JP
Else
Room_Temp = Room_Temp
End If
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