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NORD Drivesystems BU0550 User Manual

Page 49

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3 AWL (Instruction List, IL)

BU 0550 GB-0813

49

3.5.1.9

TP time pulse

With a positive flank on IN the timer is started with the value 0. The timer counts up to the value entered in
PT and then stops. This process cannot be interrupted! PT can be changed during counting. Output Q is
TRUE, as long as the timer ET is less than PT. If ET = PT and a rising flank is detected on IN the timer is
restarted at 0.

Here, literals can be used for simplified input, e.g.

LD TIME#50s20ms

= 50.020 seconds

LD TIME#1d30m

= 1 day and 30 minutes

IN

Q

PT

ET

Table 67 TP time pulse

NOTE

The time ET runs independently from the PLC cycle. Starting of the timer with IN and setting of
the output Q is only executed with the function call-up "CAL". The function call-up takes place
within a PLC cycle. However, with PLC programs which are longer than 5 ms this may result in
the occurrence of jitter.

VAR_INPUT

VAR_OUTPUT

Input

Explanation

Type

Output

Explanation

Type

IN

Timer active

BOOL

Q

TRUE

( ET < PT )

BOOL

PT

Duration

DINT

ET

Current timer reading

DINT