Table Of Contents
On-Off Controller (G Dataflow)
Implements an on-off controller.
.gvi.png)
action
Action of the controller.
| Name | Value | Description |
|---|---|---|
| Reverse | 0 | The controller is reverse-acting. |
| Direct | 1 | The controller is direct-acting. |
Default: Reverse
reset
A Boolean that specifies whether to reset the internal parameters, such as the integrated error, of the controller.
| True | Resets the internal parameters. |
| False | Does not reset the internal parameters. |
Set reset to True if your application must stop and restart the control loop without restarting the entire application.
This input accepts an array of Booleans if setpoint is an array.
Default: False
setpoint
Setpoint value, or desired value, of the process variable.
This input accepts a double-precision, floating-point number or an array of double-precision, floating-point numbers.
Default: 0
process variable
Measured value of the process variable.
This input accepts an array of double-precision, floating-point numbers if setpoint is an array.
controller hysteresis
Hysteresis of the controller.
This input accepts an array of double-precision, floating-point numbers if setpoint is an array.
Default: 0
dt
Loop-cycle time, or interval in seconds, at which this node is called. dt must be greater than 0.
Default: 1
minimum ON time
Minimum time for the controller to remain activated.
Default: 0
minimum OFF time
Minimum time for the controller to remain deactivated.
Default: 0
output
error
Difference between the setpoint and the process variable.
Where This Node Can Run:
Desktop OS: Windows
FPGA: DAQExpress does not support FPGA devices
Web Server: Not supported in VIs that run in a web application