On-delay

Short description

The output does not switch on until a configured delay time has expired.

Connection

Description

Trg input

The Trg (Trigger) input triggers the on-delay time.

Parameter

T: represents the on-delay time after which the output is switched on (output signal transition 0 to 1).

Retentivity on = the status is retentive in memory.

Output Q

Q switches on after a specified time T has expired, provided Trg is still set.

Parameter T

The actual value of another already-programmed function can provide the time in parameter T:

For the 0BA7 and later version devices, you can additionally use the actual values of the following already-programmed functions:

You can select the required function by the block number.

For information on the validity and accuracy of the time base, refer to the LOGO! manual.

Timing diagram

Description of the function

The 0 to 1 transition at input Trg triggers the time Ta (the current time in LOGO!).

If the status at input Trg stays 1 at least for the duration of the configured time T, the output is set to 1 when this time has expired (the on signal of the output follows the on signal of the input with delay).

The time is reset if the status at input Trg changes to 0 again before the time T has expired.

The output is reset to 0 when input Trg is 0.

Overview