Attributes (Sequencer) - Johnson Controls - Metasys - LIT-12011147 - Software Application - Controller Configuration Tool - 15.0

Controller Tool Help

Brand
Johnson Controls
Metasys
Product name
Controller Configuration Tool
Document type
User Guide
Document number
LIT-12011147
Version
15.0
Revision date
2022-11-18
Language
English

The following table describes the attributes used by the Sequencer XX (where XX is 01 through 16) modules.

Table 1. Sequencer 01 through Sequencer 16 Attributes

Name

Type 1

Description

Default Value

Break Limit

 

Represents the limits at which each successive stage deactivates. If Proactive is True, the first limit applies to the second stage, the second limit applies to the third stage, and so on. Each successive value must be greater than the previous break limit and also less than its corresponding make limit. The size of this array is set to Number of Outputs (or Number of Outputs - 1 if Proactive is True) at configuration time.

 

Current Stage

G, V

Indicates the number of the active outputs of the sequencer.

 

Device X Enable

 

Establishes the enable status of the sequencer device outputs. A value of False takes the associated device out of service. In Device X Enable, X is 1-16.

True

Device X Out

V

Contains the output value for the corresponding device. In Device X Out, X is 1-16.

 

Device X Rank

 

These float values represent the ranking of each device. This value establishes the order by which the device outputs are activated. In Device X Rank, X is 1-12.

0.0

Input

 

Contains the control signal input to this module. It is compared against the make and break limits to determine how many outputs to activate.

0.0%

Instant Shutdown

 

Forces all outputs inactive when it is True. When it is False, the module monitors the input and stages the outputs. When this value transitions from False to True, all of the outputs are deactivated instantly (ignoring any Minimum On Timers and the Interstage Off Timer).

False

Interstage Off Delay

 

Defines the minimum time interval that must elapse between the sequential deactivation of multiple Sequencer stages unless the Instant Shutdown value is True or the module is disabled.

1200 Seconds

Interstage On Delay

 

Defines the minimum time interval that must elapse between the sequential activation of multiple Sequencer stages.

1200 Seconds

Interstage Timing

V

Provides an indication of when an interstage timer is active.

False

Make Limit

 

Represents the limits at which each successive stage is to be activated. If Proactive is True, the first limit applies to the second stage, the second limit applies to the third stage, and so on. Each successive value must be greater than the previous make limit and also greater than its corresponding break limit. The size of this array is set to Number of Outputs (or Number of Outputs - 1 if Proactive is True) at configuration time.

 

Min Off Time

 

Minimum time that an output must remain off before it can be reactivated to an on condition following deactivation. As such, a separate timer is established for each device output upon being deactivated. Until the time interval expires, the output is blocked from being reactivated unless Rotate Now has transitioned from False to True.

600 Seconds

Min On Time

 

Contains the minimum time interval that an output must remain on before it can be deactivated to an off condition following activation. As such, a separate timer is established for each device output upon being activated. Until the time interval expires, the output is blocked from being deactivated unless the Instant Shutdown value is True, the module is disabled, or Rotate Now has transitioned from False to True.

600 Seconds

Number of Outputs

V

Number of outputs controlled by this Sequencer.

 

Operating State

V

Current operational state of the sequencer.

Set Name: Sequencer Operating State

Proactive

C

Indicates the mode of operation for the sequencer. When this value is False, the lead output is activated when the input reaches the first make limit. When this attribute is True, the lead output is placed in a continuously activated state (provided Instant Shutdown is False). The second stage actually is activated when Input reaches the first make limit.

False

Rotate Now

 

Retains a value of True until it is written back to False. This attribute is rising edge activated. Writing this attribute to True causes an immediate rotation based on the current ranks.

False

Sequence Order

V

Contains the activation/deactivation order of the sequencer as determined by the Lead Rotation. See Lead Rotation for details. In the case where the sequencing order is Device 3 Output, Device 4 Output, Device 1 Output, and Device 2 Output for a four stage Sequencer, the contents of this array is 3, 4, 1, 2.

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