$7\mathrm{.}3.$ An On$-$Delay timer can be programmed to be self$-$activated when a measured time is elapsed. Then, the timer output $($T$2)$ will present the response shown in the figure. Combine the timer operation with a digital output $($Q$0\mathrm{.}0)$ in order to have an alternation $($ON$-$OFF$)$ of Q$0\mathrm{.}0$ with time period double of that presented by the T$2$ pulse train. Write the required program in LAD language.