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TOF_1(IN:=bool_input , PT:=T#5ms , Q=> , ET=> );
TON_1(IN:=TOF_1.Q , PT:=T#60s, Q=> , ET=> );
F_TRIG_1(CLK:=bool_input , Q=> );
IF        F_TRIG_1.Q        THEN
        TIME1 :=TON_1.ET;
END_IF
keep_time := TIME_TO_WORD(TIME1);
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