Skip to content

Information on TON_R timers

ndealndeal
in PLCnext Engineer

Hello, I recently started a project using PLCnext Engineer. This program tracks parts on a conveyor belt and when the parts get to the solenoid, the parts get ejected. Ive created this same project twice before (on RSlogix 500 and studio5000). Both of the previous software had retentive timers. These timers were activated by an input and if the input was turned off the time elapsed held inside the timer. On PLCnext I am reading that the time only holds in the TON_R if the controller is turned off, but if the input returns to "FALSE" then the elapsed time defaults to zero. How can I make the TON_R hold its elapsed time even when the input is turned off? Below is an example of one of my TON_R timers.

ton_r.png


Comments

  • DivisionByZeroDivisionByZero

    Hi ndeal,

    maybe you could take a look at the RS function block. The output of that FB remains true until it is explicitly reset or the PLC is turned off.


    Best regards

    DivisionByZero

Sign In or Register to comment.