Attributes (WarmupCooldown Determination) - Johnson Controls - Metasys - LIT-12011147 - Software Application - Controller Configuration Tool - 13.1

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Controller Configuration Tool
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Table 1 describes the attributes used by the WarmupCooldown Determination module.

Table 1. WarmupCooldown Determination Attributes


Type 1


Default Value

Supply Air Temperature


Indicates the temperature of the supply air used to determine whether the status should automatically be set to warmup. It also prevents a network warmup command if the supply air is not warmer than the temperature in the Zone Temperature attribute.

15 °C, 59 °F



Specifies the network input for warmup cooldown mode selection.


Set Name: OST Warmup Cooldown

WC-S (State)

G, V

Indicates the effective WarmupCooldown state of the application. If the Supply Air temperature is greater than the value of Zone Temperature plus the value of Warmup Diff, the output is Warmup. Otherwise, the output matches the WarmupCooldown input.

Set Name: OST Warmup Cooldown

WCT-DIFF (Warmup Diff)


Contains the minimum differential between the supply air and zone temperatures before the system issues a warmup status.


Zone Temperature


Indicates the zone temperature that is compared to the Supply Air Temperature to determine whether warmup mode should be active.

22 °C, 72 °F

1 C - Configuration Mode Only, G - Default Element (Generated State, if applicable), SC - Simulation and Commissioning Modes Only, V - Calculated Value (Outputs)