Page 14 of 18
BLOCKsignalling
www.blocksignalling.co.uk
Changing the Timing of each Phase
The individual time for each of the phases can be adjusted to suit (the default values
are shown in the programming diagram below). Once you are happy with the
operation of the train detection, you will probably want to change these to more
realistic values.
To change the Red Time:
Switch off the power for 5 seconds. Press the push button on the PCB, and switch
the power back on.
The red led on the PCB flashes at 1 second intervals. When 3 flashes have been
seen, the button is released to store the first value. At this point the led comes on for
five seconds to confirm the value is stored.
The led then starts flashing again, and this time the button needs to be pressed to
store the second value (the time you want the red led to be lit, for example 10
flashes for 10 seconds).
When the button is released, the led flashes 10 times rapidly, and the module starts
operating.
To change the Yellow Time:
Switch off the power for 5 seconds. Press the push button on the PCB, and switch
the power back on.
The red led on the PCB flashes at 1 second intervals. When 4 flashes have been
seen, the button is released to store the first value. At this point the led comes on for
five seconds to confirm the value is stored.
The led then starts flashing again, and this time the button needs to be pressed to
store the second value (the time you want the yellow led to be lit, for example 10
flashes for 10 seconds).
When the button is released, the led flashes 10 times rapidly, and the module starts
operating.
To change the Double-Yellow Time:
Switch off the power for 5 seconds. Press the push button on the PCB, and switch
the power back on.
The red led on the PCB flashes at 1 second intervals. When 5 flashes have been
seen, the button is released to store the first value. At this point the led comes on for
five seconds to confirm the value is stored.
The led then starts flashing again, and this time the button needs to be pressed to
store the second value (the time you want both yellow leds to be lit, for example 10
