The following shows how to place the countdown timer on the screen using the timer device of the PLC. 
Set the numerical display with the screen design software. 
Use GX Works3 or other software to set the program of the PLC.

(Example) Use the RCPU's timer device T0 to display the countdown timer on the GOT. 
 • T0 of the RCPU is TN0 on the GOT. 
 • The timer is a 60 second timer. 
 • The countdown starts when M0 is turned on. 
 • The remaining time is displayed on the numerical display of the GOT.

 ◆ For GX Works3
  The program starts the count up of T0 when M0 is turned from off to on. 
  Figure 1

 ◆ For GT Designer3 (GOT2000) Version 1
  Place the numerical display on the screen, and display the value of TN0 after the data operation. 
  Figure 2

  Figure 3