I'm programming a micrologix 1200, where the input is a proximity sensor and the output is an led. In my application, I want to send a steady signal to the output while the timer is timing (no problem). When the timer is done, I want to send a "slow" flashing signal (I was hoping to use S:23/1 which I learned on a PLC-5 but is not available on a micrologix 1200). Can I use S:4?? If so, how? Also, I want to put a line in parallel with T4:0.tt that if the input signal is lost, I want to send a "fast" flashing signal. Can anyone help????