Timers that Set a Delay for Timer Inputs and Timer Outputs Triggers timer output if the timer input is active for longer than the time set in b4-01 [Timer Function ON-Delay Time]. Triggers timer output late for the time set in b4-02 [Timer Function OFF-Delay Time]. Figure 1 shows an example of how the timer function works. Figure 1. Example of Timer Function Operation Setting On/Off-delay Time for MFDO Figure 2 uses H2-01 terminals to show an example of how the timer function works. Use b4-03 [Terminal M1-M2 ON-Delay Time] and b4-04 [Terminal M1-M2 OFF-Delay Time] to set this function. Figure 2. Example of How the Timer Function Works with H2-01 Terminals Note: When the terminal is triggered, it continues for a minimum of 100 ms. The on/off-delay time of MFDO terminal does not have an effect.