Ladder - Using Timers

XG5000 has various timer function blocks. Below is a table giving a description of each timer function block.

Timer Function Block Name Description
TMR Timer with a stored elapsed time.
TMR_FLK Timer with flickering of the Q.
TMR_UINT Timer with integer preset and reset.
TOF Off Delay Timer.
TOF_RST Off Delay Timer with reset.
TOF_UINT Off Delay Timer with integer preset and reset.
TON On Delay Timer.
TON_UINT On Delay Timer with integer preset and reset.
TP Pulse Timer.
TP_RST Pulse Timer with reset.
TP_UINT Pulse Timer with integer preset and reset.
TRTG Re-triggerable Timer with reset.
TRTG_UINT Re-triggerable Timer with integer preset and reset.

Timer Help File Locations

Help Files for Timer function blocks can be found easily from the Function/Function Block insert screen.

Step Action
1 Insert a function/function block from the Scan Program.
2 Choose Timer category.
3 Select the Timer function block to view help on.
4

Press Help button.

5

Review the Timer function block Help file.

XG5000 treats timers as a function block. A timer function block requires an instance variable to be used.

A TIME value can be added to a timer’s PT input which has a data type of TIME. The following formats are available:

  • T#xD (x number of Days)

  • T#xH (x number of Hours)

  • T#xM (x number of Minutes)

  • T#xS (x number of Seconds)

  • T#xMS (x number of Milliseconds)

These formats can be combined together to form various times. For instance T#1M30S would be one minute and 30 seconds.

The outputs of a timer can be used without creating separate variables. This is done by ‘timer_instance_name.output_name’.

For example: Timer1.Q

 

 

 

 

 

 

 

 

LP302