Description
Delay logic. Three types are available: T_ON, T_OFF and Pulse.
Function
This function block can:
- Delay switch-on and switch-off signals.
- Trigger a pulse with a configurable pulse width.
Function | Timing diagram |
|---|---|
T_ON |
Ti- Time delay If the input signal [In] changes from 0 to 1 and remains at 1, the output signal [Out] changes to 1 after a delay of [Ti] seconds. However, if the [Ti] time has not elapsed but the input [In] signal changes to 0, the command is invalid. |
T_OFF |
Ti- Time delay If the input signal [In] changes from 1 to 0, the output signal [Out] changes to 0 after a delay of [Ti] seconds (or minutes). The command is invalid if the [Ti] time has not elapsed but the input [In] signal changes to 1. |
Pulse |
Ti- Time delay When the input signal [In] changes from 0 to 1, the output signal [Out] changes to 1 and remains at that value for [Ti] seconds (or minutes). |
Input
PIN | Description |
|---|---|
Input1 | Time settings |
Input2 | Input signal |
Output
PIN | Description |
|---|---|
Output | Output signal status |
Input value
PIN | Data type | Unit | Default value | Range |
|---|---|---|---|---|
Input1 | Analog | Second | N/A | N/A |
Input2 | Digital | N/A | N/A | 1, 0 |
Output value
PIN | Data type | Unit | Default value | Range |
|---|---|---|---|---|
Output | Digital | N/A | N/A | 1, 0 |
Example
At startup, the unit switch closes, the air valve opens, and the fan turns on after 90 seconds. At shutdown, the unit switch opens, the fan turns off, and the air valve closes after 60 seconds.